SFB1085 - Higher Invariants - User contributions [en]

Main Page

2022-05-15T21:31:35Z

132.199.243.28:

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== News ==

* The Collaborative Research Centre '''Higher Invariants''' (funded by the DFG) has open postdoc and PhD [[Positions]] and an extensive [[Guest programme]] in Arithmetic Geometry and Global Analysis. Apply now!

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Main Page

2022-05-15T21:31:22Z

132.199.243.28:

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== News ==

* The Collaborative Research Centre '''Higher Invariants''' (funded by the DFG) has open postdoc and PhD [[Positions]] and an extensive [[Guest programme]] in Arithmetic Geometry and Global Analysis. Apply now!

{{Template:Upcoming Events}}

{{Template:CalendarMathDpt}}

{{Template:Videos}}

{{Template:Contact}}

Conference: Gauge theory and applications

2022-05-06T15:17:39Z

132.199.243.28: /* Conference: Gauge Theory and Applications */

__NOTOC__

='''Conference: Gauge Theory and Applications =
==Dates and Location==

The conference takes place at the University of Regensburg from '''July 23rd to 27th 2018'''.
It is preceded by a [[Summer_school:_Gauge_theory_and_applications| summer school ]] the week before.

==Organizers==

The conference is organized by '''Bernd Ammann''', '''Stefan Friedl''', and '''Raphael Zentner'''.

It will focus on gauge theory and its geometric and topological applications, with an emphasis on instanton and monopole gauge theory, and symplectic geometry.

==Speakers==

The preliminary list of speakers is:

*'''Kim Froyshov''' (Oslo)
*'''Marco Golla''' (Nantes)
*'''Doris Hein''' (Freiburg)
*'''Tsuyoshi Kato''' (Kyoto)
*'''Hokuto Konno''' (Univerisity of Tokyo)
*'''Francesco Lin''' (Princeton)
*'''Jianfeng Lin''' (MIT)
*'''Shinichiroh Matsuo''' (Nagoya)
*'''Catherine Meusburger''' (Erlangen-Nürnberg)
*'''Michael Miller''' (UCLA)
*'''Tomasz Mrowka''' (MIT)
*'''Jacob Rasmussen''' (Cambridge)
*'''Sarah Rasmussen''' (Cambridge)
*'''Daniel Ruberman''' (Brandeis University)
*'''Dietmar Salamon''' (ETH Zürich)
*'''Nikolai Saveliev''' (University of Miami)
*'''Christopher Scaduto''' (Stony Brook)
*'''Steven Sivek''' (Imperial College London)
*'''Matthew Stoffregen''' (MIT)

==Titles and Abstracts==

* [[sfb-Conference_Gauge_theory_and_applications_abstracts|Titles and Abstracts]]

==Schedule==

* [[sfb-Conference_Gauge_theory_and_applications_schedule|Schedule]]

==Video Recordings==

* [https://mediathek.uni-regensburg.de/m/play/playlist/playlist_id/171 Video recordings]

==Registration==

[https://docs.google.com/forms/d/e/1FAIpQLSe8h8144ZAnbRYh0fo4iZFz_14RQdPNyKF7lCcTTnxcTT13Qw/viewform?usp=sf_link Registration page] If you intend to participate both in the conference and the summer school, it is enough to fill out the registration form for the conference only.

The deadline for application for financial support is April 30th.

==Registered participants==

* Adam Baranowski
* Stefan Behrens
* Maciej Borodzik
* Michael Brandenbursky
* Guillem Cazassus
* Carlo Collari
* Laurent Côté
* Irving Dai
* Mariano Echeverria
* Daniel Fauser
* Jesse Freeman
* Krystyna Gajczcyk
* Paolo Ghiggini
* Sudipta Ghosh
* Sherry Gong
* Przemyslaw Grabowski
* Christopher Herald
* Henry Horton
* Tirasan Khandadwit
* Hee Jung Kim
* Paul Kirk
* Adam Król
* McKee Krumpak
* Kyle Larson
* Yi-Jen Lee
* Youlin Li
* Langte Ma
* Maciej Markiewicz
* S. Michael Miller
* Matthias Nagel
* Kyungbae Park
* Tomasz Pelka
* Juanita Pinzón-Caicedo
* Wojciech Politarczyk
* Hirofumi Sasahira
* Piotr Suwara
* Jan Swoboda
* Monika Szczepanowska
* Masaki Taniguchi
* Enrico Toffoli
* Boyu Zhang

==Financial Support==

A limited amount of financial support is available especially to support junior participants.

==Practical Information==

* '''City of Regensburg:''' Regensburg is a Unesco World Heritage site that is famous for its well preserved medieval city center and its beautiful Gothic cathedral. Further information can be found [http://www.regensburg.de/unesco-world-heritage/impressions here].

* '''ACCOMMODATION:''' A block of hotel rooms is reserverd at [http://www.ibis.com/de/hotel-0904-ibis-regensburg-city/index.shtml#overview Hotel IBIS] and [https://starinnhotels.com/en/star-inn-hotel-regensburg-zentrum-by-comfort/rooms/standard-rooms/ Hotel Star Inn] for the participants of the workshop. Participants will need to book and pay for their own accommodation (if they will receive financial support they will be reimbursed later). Please use promotion code '''58893''' (Hotel IBIS) or promotion code '''Universität''' (Hotel Star Inn) when making a reservation. Rooms can be booked until 4th of June 2018 (Hotel IBIS), resp. 16th of June 2018 (Hotel Star Inn). All pre-PhD participants requesting financial support should request a shared room. Regensburg is a tourist destination, so we encourage guests to book their rooms as early as possible.

* '''TRAVEL:''' One can reach the university by following the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

==Contact==

If you wish to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]

AG-Seminar (Jannsen/Kerz)

2022-05-06T15:15:13Z

132.199.243.28:

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=AG-Seminar (Jannsen/Kerz)=

==Date and location==

Monday 14-16, BIO 1.1.34 (SFB)

==Program==

[http://www.mathematik.uni-regensburg.de/kerz/ss16/oberseminar.pdf Intersection theory on regular schemes]

The numbered talks are from the program the others are about individual reseach topics.

{| align="center" cellpadding="6" cellspacing="0" border="1"
|-
! Date
! Speaker
! Topic
|-
| 11.4. || Johann Dahlhausen || (1) K_0-group of complexes
|-
| 18.4. || Christian Haas || (2) Serre's Tor-forumla
|-
| 25.4. || Franziska Wutz || Bertini theorems over finite fields
|-
| 2.5. || Uwe Jannsen || (3) The Dold-Puppe transformation
|-
| 9.5. || Han-Ung Kufner || (4) Adams operation
|-
| 30.5. || Moritz Kerz || (5) Adams operation on K_0^Y(X)
|-
| 6.6. || Florian Strunk || (6) The coniveau filtration on K_0^Y(X)
|-
| 13.6. || Yigeng Zhao || (7) Higher K-theory and the Adams operations
|-
| 20.6. || Veronika Ertl || Syntomic cohomology and p-adic motivic cohomology
(joint with Wiesia Niziol)
|-
| 27.6. || TBA || TBA
|-
| 4.7. || Morten Lüders || (8) Intersection on regular schemes
|-
| 11.07.. || Florian Strunk || On A1-connectivity
|-
|}

Past talk of the Regensburg low-dimensional geometry and topology seminar

2022-05-06T15:11:11Z

132.199.243.28: Created page with "__NOTOC__ =<big>Past talks of the Regensburg low-dimensional geometry and topology seminar</big>= [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/in..."

__NOTOC__

=<big>Past talks of the Regensburg low-dimensional geometry and topology seminar</big>=

[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/index.php/Regensburg_low-dimensional_geometry_and_topology_seminar Link] to the talks during the current semester.

==Talks in fall/winter 2020/21==
{| class="wikitable" style="border: 0px;"
! Date
! Speaker
! Title
! Abstract
|- style="vertical-align:top;"
| style="width:120px;" | November 3
| style="width:300px;" | [https://guests.mpim-bonn.mpg.de/marengon/ Marco Marengon] (MPIM Bonn)
| style="width:400px;" | Non-orientable knot cobordisms and torsion order in Floer homologies
[http://lewark.de/lukas/marengon-slides.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/5fa2bba4dafe69.33210586 Video]
| style="width:600px;" | Given an orientable knot cobordism between classical knots K and K', Juhász, Miller, and Zemke proved an inequality involving the torsion order of the knot Floer homology of K and K' and the Euler characteristic and the number of local maxima appearing in the cobordism.
In our work, we prove analogous inequalities for unorientable knot cobordisms, using unoriented versions of instanton and knot Floer homology. Much of the subtlety in our argument lies in the fact that we need to choose more complicated decorations on the surface than the ones appearing in Juhász-Miller-Zemke's case.
We also introduce unoriented versions of the band unknotting number and of the refined cobordism distance and apply our results to give bounds on these based on the torsion orders of the Floer homologies. As an application, I will exhibit a family of knots all of which bound an embedded Möbius band in B^4, but for which the unorientable refined cobordism distance from the unknot is arbitrarily large.
This is joint work with Sherry Gong.
|- style="vertical-align:top;"
| November 10
| [https://sites.google.com/view/masaki-taniguchis-homepage Masaki Taniguchi] (Riken)
| Filtered instanton Floer homology and the 3-dimensional homology cobordism group
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/taniguchi_slides.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/5fad2a342a1054.47376996 Video]
| We introduce a family of real-valued homology cobordism invariants r_s(Y) of oriented homology 3-spheres. The invariants r_s(Y) are based on a quantitative construction of filtered instanton Floer homology. Using our invariants, we give several new constraints of the set of smooth boundings of homology 3-spheres. As one of the corollaries, we give infinitely many homology 3-spheres which cannot bound any definite 4-manifold. As another corollary, we show that if the 1-surgery of a knot has negative Froyshov invariant, then the 1/n-surgeries (n>0) of the knot are linearly independent in the homology cobordism group. This is joint work with Yuta Nozaki and Kouki Sato.
|- style="vertical-align:top;"
| November 17
| [https://lrobert.perso.math.cnrs.fr/ Louis-Hadrien Robert] (Luxembourg)
| Categorification of 1 and of the Alexander polynomial
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/robert-slides.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/5fb4d2422f61b2.73706115 Video]
| I'll give a combinatorial and down-to-earth definition of the symmetric gl(1) homology. It is a (non-trivial) link homology which categorifies the trivial link invariant (equal to 1 on every link). Then I'll explain how to use this construction to obtain colored categorification of the Alexander polynomial. (joint with E. Wagner)
|- style="vertical-align:top;"
| November 24
| [https://www.dpmms.cam.ac.uk/~sr727/ Sarah Rasmussen] (Cambridge)
| Taut foliations from left orders in Heegaard genus 2
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/sdr_24_nov_2020.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/5fbd4068e33dc3.77710228 Video]
| Until now, taut foliations on non-fibered hyperbolic 3-manifolds have generally been constructed using branched surfaces, whether via sutured manifold hierarchies, spanning surfaces of knot exteriors, or Dunfield's one-vertex triangulations with foliar orientations. In this talk, I introduce a novel taut foliation construction that makes no recourse to branched surfaces. Instead, it starts with a transversely-foliated $\mathbb{R}$-bundle over a Heegaard surface, specified by a real line action from a left-invariant order (when existent) on the fundamental group of the 3-manifold. Relating taut foliations to fundamental group real line actions is a decades old question that interested Thurston, Gabai, and Calegari, and has been revived in recent years by the L-space conjecture. This construction works reliably for genus 2 Heegaard diagrams satisfying mild conditions, explaining certain numerical results of Dunfield.
|- style="vertical-align:top;"
| December 1
| [https://www.bc.edu/bc-web/schools/mcas/departments/math/people/faculty-directory/tao-li.html Tao Li] (Boston College)
|Heegaard genus, degree-one maps, and amalgamation of 3-manifolds
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/li-slides-rlgts.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/5fc8f3e3747153.83277089 Video]
|Let $W$ be the exterior of a knot in a homology sphere and let $M$ be an amalgamation of $W$ and any other compact 3-manifold along boundary torus. Let $N$ be the manifold obtained by pinching $W$ into a solid torus. This means that there is a degree-one map from $M$ to $N$. We prove that the Heegaard genus of $M$ is at least as large as the Heegaard genus of $N$. An immediate corollary is that the tunnel number of a satellite knot is at least as large as the tunnel number of its pattern knot.
|- style="vertical-align:top;"
| December 8
| [https://web.stanford.edu/~cm5/ Ciprian Manolescu] (Stanford)
| Relative genus bounds in indefinite four-manifolds
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides-manolescu.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/5fcfb23dcafad9.40493309 Video]
| Given a closed four-manifold X with an indefinite intersection form, we consider smoothly embedded surfaces in X - B^4, with boundary a knot K. We give several methods to produce bounds on the genus of such surfaces in a fixed homology class. Our techniques include relative adjunction inequalities and the 10/8 + 4 theorem. In particular, we present obstructions to a knot being H-slice (that is, bounding a null-homologous disk) in a four-manifold. We give an example showing that the set of H-slice knots can detect exotic smooth structures on closed 4-manifolds. Further, we give examples of knots that are topologically but not smoothly H-slice in some indefinite 4-manifolds. This is joint work with Marco Marengon and Lisa Piccirillo.
|- style="vertical-align:top;"
| December 15
| [https://sites.google.com/view/siddhi-krishna/home Siddhi Krishna] (Georgia Tech)
| Taut foliations and Dehn surgery along positive braid knots
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides-krishna-2.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/5fda17e11a0472.19734089 Video]
| The L-space conjecture has been in the news a lot lately. It predicts a surprising relationship between the algebraic, geometric, and Floer-homological properties of a 3-manifold Y. In particular, it predicts exactly which 3-manifolds admit a "taut foliation". In this talk, I'll discuss some of my past and forthcoming work investigating these connections. In particular, I'll discuss a strategy for building taut foliations manifolds obtained by Dehn surgery along knots realized as closures of "positive braids". As an application, I will show how taut foliations can be used to obstruct positivity for cable knots. All are welcome; no background in foliation or Floer homology theories will be assumed.
|
|- style="vertical-align:top;"
| January 19
| [https://sites.math.rutgers.edu/~feehan/ Paul Feehan] (Rutgers)
| Morse-Bott theory on analytic spaces and applications to topology of smooth 4-manifolds
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_feehan.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/60073d8a57fe92.43278551 Video]
| We describe a new approach to Morse theory on singular analytic spaces of the kind that typically arise in gauge theory, such as the moduli space of SO(3) monopoles over 4-manifolds or the moduli space of Higgs pairs over Riemann surfaces. We explain how this new version of Morse theory, called virtual Morse-Bott theory, can potentially be used to answer questions arising in the geography of 4-manifolds, such as whether constraints on the topology of compact complex surfaces of general type continue to hold for symplectic 4-manifolds or even for smooth 4-manifolds of Seiberg-Witten simple type. This is joint work with Tom Leness.
|- style="vertical-align:top;"
| January 26
| [http://people.brandeis.edu/~ruberman/ Danny Ruberman] (Brandeis)
| The diffeomorphism group of a 4-manifold
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_ruberman.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/60106744ab4e90.23857283 Video]
| Associated to a smooth n-dimensional manifold are two infinite-dimensional groups: the group of homeomorphisms Homeo(M), and the group of diffeomorphisms, Diff(M). For manifolds of dimension greater than 4, the topology of these groups has been intensively studied since the 1950s. For instance, Milnor’s discovery of exotic 7-spheres immediately shows that there are distinct path components of the diffeomorphism group of the 6-sphere that are connected in its homeomorphism group. The lowest dimension for such classical phenomena is 5.

I will discuss recent joint work with Dave Auckly about these groups in dimension 4. For each n, we construct a simply connected 4-manifold Z and an infinite subgroup of the nth homotopy group of Diff(Z) that lies in the kernel of the natural map to the corresponding homotopy group of Homeo(Z). These elements are detected by (n+1)-parameter gauge theory. The construction uses a topological technique.
|- style="vertical-align:top;"
| February 2
| [https://www.i2m.univ-amu.fr/perso/luisa.paoluzzi/hple.html Luisa Paoluzzi] (University of Aix-Marseille)
|Cyclic branched covers of alternating knots
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_paoluzzi.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/6019a543a4c668.36515602 Video]

|The goal of the talk is to show that certain topological invariants of knots, called cyclic branched covers, are strong invariants for prime alternating knots. I will start by describing what cyclic branched covers are before presenting some known facts concerning their properties as invariants of knots. I will then point out what features of alternating knots are key to prove the result. The actual proof will be given in the second part of the talk.
|- style="vertical-align:top;"
| February 9
| [http://www.math.ubc.ca/~liam/ Liam Watson] (University of British Columbia)
| Symmetry and mutation
| Mutation is a relatively simple process for altering a knot in a non-trivial way, but it turns out to be quite tricky to see the difference between mutant pairs—a surprisingly wide range of knot invariants are unable to distinguish mutants. In the first part of the talk, I will give some background on the symmetry group associated with a knot, and show that this group is sometimes able to see mutation. In the second part of the talk, I will outline some work with Andrew Lobb, in which we appeal to a symmetry—when present—in order to define a refinement of Khovanov homology that is able to separate mutants.
|- style="vertical-align:top;"
| February 16
| [http://math.columbia.edu/~nks/ Nick Salter] (Columbia)
| r-spin mapping class groups and applications
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_salter.pdf Slides],
[https://mediathek2.uni-regensburg.de/playthis/602c0084673f24.13520263 Video]
| An r-spin structure on a surface can be thought of as a gadget for measuring “Z/rZ-valued winding numbers” of curves on the surface. There is an evident action of the mapping class group on the set of such objects; an r-spin mapping class group is the associated stabilizer. r-spin structures appear in a wide variety of contexts at the interface of topology and algebraic geometry: singularity theory, translation surfaces/Abelian differentials, linear systems on algebraic surfaces. I will explain what is now known about r-spin mapping class groups and the uses to which the theory can be put. This encompasses various projects with my collaborators Aaron Calderon and Pablo Portilla Cuadrado.
|- style="vertical-align:top;"
|}

==Talks in spring/summer 2020==

{| class="wikitable" style="border: 0px;"
! Date
! Speaker
! Title
! Downloads
! Abstract
|- style="vertical-align:top;"
| style="width:80px;" | May 5
| style="width:180px;" | [http://people.math.harvard.edu/~kronheim/ Peter Kronheimer] (Harvard)
| style="width:350px;" | Genus versus double-points for immersed surfaces
| style="width:100px;" | [https://mediathek2.uni-regensburg.de/playthis/5eb3e138b98b91.38823016 Video]
| style="width:600px;" | If X is a simply-connected closed 4-manifold containing an oriented embedded surface S of genus g, is there always an immersed sphere S' which represents the same homology class and has only g transverse double-points? Colloquially, can we "trade handles for double points"? This is an open question, though a "relative" version of the question (concerning surfaces in the 4-ball bounding a given knot in the 3-sphere) is known to have a negative answer. For closed surfaces in closed 4-manifolds, a particularly interesting class of examples comes from algebraic geometry, and includes the question of whether two smooth quintic surfaces can intersect in a singular rational curve. We will explore whether gauge theory might be a tool that can be used to explore these questions.
|- style="vertical-align:top;"
| May 12
| [http://math.uchicago.edu/~dannyc/ Danny Calegari] (University of Chicago)
| Taut foliations leafwise branch cover the 2-sphere
| [https://mediathek2.uni-regensburg.de/playthis/5ebcdd40adff68.61547947 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/calegari-slides.pdf Slides]
| A co-oriented foliation of an oriented 3-manifold is taut if and only if there is a map from the 3-manifold to the 2-sphere which is a branched cover when restricted to each leaf. I shall give two proofs of this theorem and explain its relation to theorems of Ghys and Donaldson.
|- style="vertical-align:top;"
| May 19
| [https://www.research.manchester.ac.uk/portal/richard.webb.html Richard Webb] (University of Manchester)
| Quasimorphisms on diffeomorphism groups
| [https://mediathek2.uni-regensburg.de/playthis/5ec4e9c4e69571.49997295 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/quasimorphismpres.pdf Slides]
| I will explain how to construct an unbounded quasimorphism on the group of isotopically-trivial diffeomorphisms of a surface of positive genus. As a corollary the commutator length and fragmentation norm are both (stably) unbounded, which solves a problem of Burago--Ivanov--Polterovich. The proof uses a new hyperbolic graph on which these groups act by isometries, which is inspired by techniques from mapping class groups. This is joint work with Jonathan Bowden and Sebastian Hensel.
|- style="vertical-align:top;"
| May 26
| [https://sites.google.com/view/zhenkun Zhenkun Li] (MIT)
| Instanton Floer homology and the depth of taut foliations
| [https://mediathek2.uni-regensburg.de/playthis/5eceb8f9a9cf89.80472887 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/li-slides.pdf Slides]
| Sutured manifold hierarchy is a powerful tool introduced by Gabai to study the topology of 3-manifolds. The length of a sutured manifold hierarchy gives us a measurement of how complicated the sutured manifold is. Also, using this tool, Gabai proved the existence of finite depth taut foliations. However, he didn’t discuss how finite the depth could be.

Sutured Instanton Floer homology was introduced by Kronheimer and Mrowka and is defined on balanced sutured manifolds. In this talk, I will explain how sutured instanton Floer homology could offer us bounds for the minimal length of a sutured hierarchy and the minimal depth of a foliation on a fixed balanced sutured manifold.
|- style="vertical-align:top;"
| June 2
| no talk (pentecoste)
|
|
|- style="vertical-align:top;"
| June 9
| [https://web.math.princeton.edu/~bz/ Boyu Zhang] (Princeton)
| Instanton Floer homology for tangles and applications in Khovanov homology
| [https://mediathek2.uni-regensburg.de/playthis/5ee0ca239787b3.80733080 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/zhang-slides.pdf Slides]
|In this talk, I will present an excision formula for singular instanton Floer homology where the excision surfaces intersect the singular locus. This formula allows us to define an instanton Floer homology theory for sutured manifolds with tangles. Similar to the non-singular case, the instant Floer homology for tangles is non-vanishing on taut manifolds with tangles and detects trivial products. As applications, we prove several detection results for Khovanov homology. This is joint work with Yi Xie.
|- style="vertical-align:top;"
| June 16
| [https://www.math.uga.edu/directory/people/gordana-matic Gordana Matic] (Univ. of Georgia/MPIM Bonn)
| Spectral order invariant and obstruction to Stein fillability
| [https://mediathek2.uni-regensburg.de/playthis/5ee9edb47fc906.61309061 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/matic-slides.pdf Slides]
| In this joint work with Cagatay Kutluhan, Jeremy Van Horn-Morris and Andy Wand, we define an invariant of contact structures in dimension three arising from introducing a filtration on the boundary operator in Heegaard Floer homology. This invariant takes values in the set of positive integers union infinity. It is zero for overtwisted contact structures, ∞ for Stein fillable contact structures, non-decreasing under Legendrian surgery, and computable from any supporting open book decomposition. I will give the definition and discuss computability of the invariant. As an application, we give an easily computable obstruction to Stein fillability on closed contact 3-manifolds with non-vanishing Ozsváth-Szabó contact class.
|- style="vertical-align:top;"
| June 23
| [https://sites.google.com/view/lpiccirillo/home Lisa Piccirillo] (MIT)
| The trace embedding lemma and PL surfaces
| [https://mediathek2.uni-regensburg.de/playthis/5ef24a70b54d45.05325323 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/piccirillo-slides.pdf Slides]
| 4-manifold topologists have long been interested in understanding smooth (resp. topological) embedded surfaces in smooth (resp. topological) 4-manifolds, and as such have developed rich suites of tools for obstructing the existence of smooth (resp. topological) surfaces. Understanding PL surfaces in smooth 4-manifolds has historically garnered less interest, but several problems about PL surfaces have recently arisen in modern lines of questioning. Presently there are far fewer tools available to obstruct PL surfaces. In this talk, I’ll discuss how to use a classical observation, called the trace embedding lemma, to repurpose smooth surface obstructions as PL surface obstructions. I’ll discuss applications of these retooled obstructions to problems about spinelessness, exotica, and geometrically simply connectedness. This is joint work with Kyle Hayden.
|- style="vertical-align:top;"
| June 30
| [https://e.math.cornell.edu/people/mann/index.html Kathryn Mann] (Cornell)
| Large-scale geometry of big mapping class groups
| [https://mediathek2.uni-regensburg.de/playthis/5efc44ee4f04c4.67672735 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/mann-slides.pdf Slides]
| Mapping class groups of infinite type surfaces are not finitely generated (nor even are they locally compact) groups, but in many cases one can still meaningfully talk about their large scale geometry. I will explain joint work with Kasra Rafi on the problem of which surfaces have mapping class groups with nontrivial coarse geometry, and how this relates to questions of actions on arc and curve complexes.
|- style="vertical-align:top;"
| July 7
| [https://www.math.columbia.edu/~khovanov/ Mikhail Khovanov] (Columbia University)
| From SL(2) to GL(N) foam evaluation
| [https://mediathek2.uni-regensburg.de/playthis/5f0eb1ba959e84.84342432 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/khovanov-slides.pdf Slides]
| Foams in 3-space are cobordisms between planar graphs that are heavily used in link homology theories. In this talk we'll explain how foam theory can be built from the ground up starting with an evaluation of closed foams, for SL(2) foams, then GL(2) foams, and finally GL(N) foams for any N. The talk is based on joint work with Louis-Hadrien Robert and on L.-H. Robert and Emmanuel Wagner's work on foam evaluation.
|- style="vertical-align:top;"
| July 14
| [https://cbz20.raspberryip.com/ Claudius Zibrowius] (UBC Vancouver)
| Thin links and Conway spheres
| [https://mediathek2.uni-regensburg.de/playthis/5f1023b1ee18e1.00868483 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/zibrowius-slides2.pdf Slides]
| When does Dehn surgery along a knot give an L-space? More generally, when does splicing two knot complements give an L-space? Hanselman, Rasmussen and Watson gave very compelling answers to these questions using their technology of immersed curves for three-manifolds with torus boundary. Similar invariants have been developed for four-ended tangles. We use those invariants to study various notions of thinness in both Heegaard Floer and Khovanov homology from the perspective of tangle decompositions along Conway spheres. Interestingly, our results bear strong resemblance to the aforementioned results about L-spaces. Also, we observe strong similarities between Heegaard Floer and Khovanov homology that lead us to ask: What is a thin link? This is joint work with Artem Kotelskiy and Liam Watson.
|- style="vertical-align:top;"
| July 21
| [http://people.maths.ox.ac.uk/lackenby/ Marc Lackenby] (University of Oxford)
| Knot genus in a fixed 3-manifold
|[https://mediathek2.uni-regensburg.de/playthis/5f212046629408.06849493 Video], [https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/lackenby-slides.pdf Slides]
| The genus of a knot is the minimal genus of any of its Seifert surfaces. This is a fundamental measure of a knot's complexity. It generalises naturally to homologically trivial knots in an arbitrary 3-manifold. Agol, Hass and Thurston showed that the problem of determining the genus of a knot in a 3-manifold is hard. More specifically, the problem of showing that the genus is at most some integer g is NP-complete. Hence, the problem of showing that the genus is exactly some integer g is not in NP, assuming a standard conjecture in complexity theory. On the other hand, I proved that the problem of determining the genus of a knot in the 3-sphere is in NP. In my talk, I will discuss the problem of determining knot genus in a fixed 3-manifold. I will outline why this problem is also in NP, which is joint work with Mehdi Yazdi. The proof involves the computation of the Thurston norm ball for knot exteriors.
|- style="vertical-align:top;"
|}

Regensburg low-dimensional geometry and topology seminar

2022-05-06T15:10:38Z

132.199.243.28:

__NOTOC__

=<big>Regensburg low-dimensional geometry and topology seminar</big>=

The seminar takes place on Zoom (see information below) every Tuesday at 16:00 CET (that is 7am on the US west coast, 10am on the US east coast, 10pm in China and 11pm in Korea and Japan).

Talks are split into a 40 minute and a 20 minute part, with a 15 minute tea break in between (you have to brew your own tea/coffee/beer...).

==Talks in spring/summer 2021==

The program is also contained in the [https://calendar.google.com/calendar/embed?src=lkphrh6v1m5v694ijk4nsq5iqc%40group.calendar.google.com&ctz=Europe%2FZurich RLGTS Google Calendar.]
To receive announcements by email, sign up to our [https://www-mailman.uni-regensburg.de/mailman/listinfo/math.rlgts mailing list.]

{| class="wikitable" style="border: 0px;"
! Date
! Speaker
! Title
! Abstract
|- style="vertical-align:top;"
| style="width:120px;" | April 27
| style="width:300px;" | [https://www.maths.ox.ac.uk/people/guillem.cazassus Guillem Cazassus] (Oxford)
| style="width:400px;" | The earring correspondence of the pillowcase
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_cazassus.pdf Slides] [https://mediathek2.uni-regensburg.de/playthis/6088610d13d905.94167507 Video]
| style="width:600px;" | Singular instanton homology is a knot invariant introduced by Kronheimer and Mrowka. It is deeply tied to Khovanov homology, and among other things, permits to show that the latter detects the unknot.

In order to compute singular instanton homology, Hedden, Herald and Kirk defined a symplectic (Atiyah-Floer) analogue, called pillowcase homology. This is a Lagrangian Floer homology in the traceless character variety of the four-punctured sphere.

We study the Lagrangian correspondence induced by the earring tangle, an essential ingredient in Kronheimer-Mrowka's construction. Our computation suggests that figure eight bubbling — a subtle degeneration phenomenon predicted by Bottman and Wehrheim — appears in the context of traceless character varieties. This is joint work with Chris
Herald, Paul Kirk and Artem Kotelskiy.
|- style="vertical-align:top;"
| May 4
| [https://web.math.princeton.edu/~szabo/ Zoltán Szabó] (Princeton)
| Knot Floer homology constructions and the Pong Algebra
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/zoltan_szabo_slides_regensburg.pdf Slides] [https://mediathek2.uni-regensburg.de/playthis/6092843f3ac1f2.55974595 Video]
| In a joint work with Peter Ozsvath we have developed algebraic invariants for knots using a family of bordered knot algebras. The goal of this lecture is to review these constructions and discuss some of the latest developments
|- style="vertical-align:top;"
| May 11
| [https://sites.google.com/bc.edu/john-baldwin/home John Baldwin] (Boston College)
| Instanton L-spaces and splicing
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_john_baldwin.pdf Slides]
[https://mediathek2.uni-regensburg.de/playthis/609b80d9ef1517.27795704 Video]
| We prove that the 3-manifold obtained by gluing the complements of two nontrivial knots in homology 3-sphere instanton L-spaces, by a map which identifies meridians with Seifert longitudes, cannot be an instanton L-space. This recovers the recent theorem of Lidman–Pinzon-Caicedo–Zentner that the fundamental group of every closed, oriented, toroidal 3-manifold admits a nontrivial SU(2)-representation, and consequently Zentner’s earlier result that the fundamental group of every closed, oriented 3-manifold besides the 3-sphere admits a nontrivial SL(2, C)-representation. This is joint work with Steven Sivek.
|- style="vertical-align:top;"
| May 18
| [https://math.virginia.edu/people/ra5aq/ Rostislav Akhmechet] (Virginia)
| Anchored foams and annular homology
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_akhmechet.pdf Slides]
[https://mediathek2.uni-regensburg.de/playthis/60a4b821c1f1a5.35673801 Video]
| We describe equivariant sl(2) and sl(3) homology for links in the solid torus, identified with the thickened annulus, via foam evaluation and universal construction. The solid torus is replaced by 3-space with a distinguished line in it. Generators of state spaces for annular webs are represented by foams that may intersect the distinguished line. Intersection points, called anchor points, contribute additional terms to the foam evaluation. State spaces and link homology carry additional gradings coming from anchor points. I will describe our evaluation formula and the resulting annular homology theories, as well as relations to other constructions. This is joint work with Mikhail Khovanov.
|- style="vertical-align:top;"
| May 25
| ''no talk (whit tuesday)''
|
|
|- style="vertical-align:top;"
| June 1
|[https://people.mpim-bonn.mpg.de/aruray/ Arunima Ray] (MPIM Bonn)
| A surface embedding theorem
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides-ray.pdf Slides]
[https://mediathek2.uni-regensburg.de/playthis/60b73387b2e8b4.23924882 Video]
| Generalising work of Freedman-Quinn and Stong from 30-40 years ago, we prove a surface embedding theorem for 4-manifolds with good fundamental group, in the presence of potentially unframed dual spheres. The essential obstruction is the Kervaire-Milnor invariant, and I will describe how to compute it and present some useful corollaries of the theorem. The goal of the talk is to be reasonably self-contained, and no prior expert knowledge of 4-manifold topology should be required. This is joint work with Daniel Kasprowski, Mark Powell, and Peter Teichner.
|- style="vertical-align:top;"
| June 8
| [https://cns.utexas.edu/directory/item/353-gordon-cameron-m?Itemid=349 Cameron Gordon] (UT Austin)
| Toroidal 3-manifolds and the properties in the L-space Conjecture
[https://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/slides_gordon.pdf Slides]
[https://mediathek2.uni-regensburg.de/playthis/60c21183e28952.80232532 Video]
| The L-space Conjecture asserts the equivalence, for prime 3-manifolds, of three properties: not being an L-space (NLS), having left-orderable fundamental group (LO), and supporting a co-orientable taut foliation (CTF). We study these properties for toroidal 3-manifolds. For example, Eftekhary and Hanselman-Rasmussen-Watson have shown that toroidal homology spheres are NLS; we show that they are LO. We also show that the cyclic branched covers of a prime satellite knot are NLS and LO, and CTF if the companion is fibered. A partial extension to links allows us to show that a prime quasi-alternating link is either a (2,q) torus link or hyperbolic, generalizing Menasco's classical result for non-split alternating links. This is joint work with Steve Boyer and Ying Hu.
|- style="vertical-align:top;"
| June 15
| [https://sites.google.com/site/thomasbarthelme/ Thomas Barthelmé] (Queen's University)
| Hyperbolic-like actions on ℝ and applications to (contact) Anosov flows
[https://mediathek2.uni-regensburg.de/playthis/60c9e9d5841431.19598102 Video]
| Say that an action of a group G on the real line is hyperbolic-like if it commutes with the integer translations and every element either has no fixed points or exactly one pair of attractor/repeller in [0,1).

I will explain how knowing which elements of a hyperbolic-like action admit fixed points is enough to characterize the action up to conjugacy.

Our goal behind this theorem was its application to the problem of classifying (ℝ-covered) Anosov flows up to orbit equivalence, which I will explain. It also turns out that it yields an equivalence between contact Anosov flows up to orbit equivalence and contact structures up to isomorphism, allowing to directly use contact geometry to solve problems on Anosov flows and vice versa.

This is joint work with Kathryn Mann and Jonathan Bowden.
|- style="vertical-align:top;"
| June 22
| ''no talk ([https://www.8ecm.si/ ECM])''
|
|
|- style="vertical-align:top;"
| June 29
| [https://www2.math.upenn.edu/~alkju/ Alexandra Kjuchukova] (Notre Dame)
| Covers of S3 bounding covers of B4
| Let G be a group, K a knot and ρ a surjective homomorphism π1(S3\K) → G. When does a branched cover of S3 determined by ρ extend over B4, with a smooth branching locus F? Previously, the answer was only known under quite strong assumptions, e.g. when K is slice and G a dihedral group. I will define a new invariant which detects the existence of such an extension for all knots and all metabelian groups. I will give examples of computing the obstruction and constructing the desired surface F. Joint work with Kent Orr.
|- style="vertical-align:top;"
| Monday July 5 (note date change)
| [https://www.math.princeton.edu/people/jonathan-zung Jonathan Zung] (Princeton)
| Reeb flows transverse to foliations
[https://mediathek2.uni-regensburg.de/playthis/60e355b66a0410.09286145 Video]
| Eliashberg and Thurston showed that (roughly) C^2 taut foliations on 3-manifolds can be approximated by tight contact structures. I will explain a new approach to this theorem which allows one to control the resulting Reeb flow and hence produce many hypertight contact structures. Along the way, I will explain how harmonic transverse measures may be used to understand the holonomy of foliations.
|- style="vertical-align:top;"
| Monday July 12 (note date change)
| [https://www.math.wustl.edu/~sfrankel/ Steven Frankel] (Washington University in St. Louis)
| Flows that generalize and organize surfaces
[https://mediathek2.uni-regensburg.de/playthis/60f14509b82492.76616472 Video]
| There are two classes of flows - quasigeodesic and pseudo-Anosov - that both generalize and organize aspects of incompressible surfaces. We will discuss potential applications of these flows to the geometry of 3-manifolds, including joint work with Thomas Barthelme and Kathryn Mann on spectral rigidity of transitive pseudo-Anosov flows.
|- style="vertical-align:top;"
|}

==Past talks==
[[Past talk of the Regensburg low-dimensional geometry and topology seminar | List of past talks in spring/summer 2020 and fall/winter 2020/21, with slides and videos]]

==Zoom information==
Zoom Meeting ID: 924 2829 6353

The password is the answer to the following riddle (lower case, singular, no article): As a topologist, what do you typically glue together from charts? (Hint: It's not an orbifold). 

We encourage you to enable your video, for a more interactive atmosphere. The talks are recorded and made available on this webpage, including audio and video of questions from the audience.

==Organizers==
[https://sites.google.com/view/jpbowden/ Jonathan Bowden,]
[http://lewark.de/lukas/ Lukas Lewark],
[http://www.mathematik.uni-regensburg.de/zentner/ Raphael Zentner].

Exploring (∞, n)-categories through n-complicial sets

2022-05-06T15:09:49Z

132.199.243.28: Created page with "With the rising significance of (∞, n)-categories, it is important to have easy-to-handle models for those and understand them as much as possible. In these talks we will di..."

With the rising significance of (∞, n)-categories, it is important to have easy-to-handle models for those and understand them as much as possible. In these talks we will discuss the model of n-complicial sets, and study how one can realize convenient representatives of strict n-categories, which encode universal indexing shapes for diagrams valued in (∞, n)-categories. We will focus on n = 2, for which more results are available, but keep an eye towards the general case. This is joint work with Viktoriya Ozornova.

Support theory for triangulated categories in algebra and topology

2022-05-06T15:09:30Z

132.199.243.28: Created page with "Abstract: We will survey the support theory of triangulated categories through the machinery of tensor-triangulated geometry. We will discuss the stratification theory of Bens..."

Abstract: We will survey the support theory of triangulated categories through the machinery of tensor-triangulated geometry. We will discuss the stratification theory of Benson—Iyengar—Krause for triangulated categories, the construction by Balmer of the spectrum of a tensor-triangulated category, and the relation between the two. We will then discuss a recent application to the category of derived Mackey functors.

Secondary cup and cap products in coarse geometry

2022-05-06T15:09:12Z

132.199.243.28: Created page with "Abstract: I present a construction of secondary cup and cap products on coarse (co-)homology theories from given cross and slant products. They are defined for coarse spaces..."

Abstract:

I present a construction of secondary cup and cap products on coarse
(co-)homology theories from given cross and slant products. They are
defined for coarse spaces relative to weak generalized controlled
deformation retracts.

On ordinary coarse cohomology, the secondary cup product agrees with a
secondary product defined by Roe. For coarsifications of topological
coarse (co-)homology theories, the secondary cup and cap products
correspond to the primary cup and cap products on Higson dominated
coronas via transgression maps. And in the case of coarse K-theory and
-homology, the secondary products correspond to canonical primary
products between the K-theories of the stable Higson corona and the Roe
algebra under assembly and co-assembly.

(arXiv:2012.11296

Equivariant virtual fundamental classes

2022-05-06T15:08:57Z

132.199.243.28: Created page with "We give a brief introduction to virtual fundamental classes, which play an important role in Gromov-Witten theory. We then discuss virtual versions of the equivariant Grothend..."

We give a brief introduction to virtual fundamental classes, which play an important role in Gromov-Witten theory. We then discuss virtual versions of the equivariant Grothendieck-Riemann-Roch theorem and the non-abelian Atiyah-Bott localization theorem for the Borel-style equivariant Chow groups defined by Totaro-Edidin-Graham. This is a report on joint work with Bhamidi Sreedhar.

Quasi-locality and rigidity of Roe algebras

2022-05-06T15:08:38Z

132.199.243.28: Created page with "Let X be a countable discrete metric space, and think of operators on L^{2}(X) in terms of their X-by-X matrix. Band operators are ones whose matrix is supported on a "band" a..."

Let X be a countable discrete metric space, and think of operators on L^{2}(X) in terms of their X-by-X matrix. Band operators are ones whose matrix is supported on a "band" along the main diagonal; all norm-limits of these form a C*-algebra, called uniform Roe algebra of X. This algebra "encodes" the large-scale (a.k.a. coarse) structure of X. Quasi-locality, coined by John Roe in '88, is a property of an operator on L^{2}(X), designed as a condition to check whether the operator belongs to the uniform Roe algebra (without producing band operators nearby). The talk is about our attempt to make this work, and find counterexamples.

After an introduction about coarse geometry and Roe algebras, I will explain quasi-locality and a result in the 'positive' direction. Next, I will introduce asymptotic expanders and make a connection with recent results about rigidity of Roe algebras, and counterexamples to the coarse Baum-Connes conjecture. Finally, if time permits, I will talk about Property A and some ingredients of some of the proofs.
(Based on joint work with A Tikuisis, K Li, P Nowak, and J Zhang.)

Bicategorical constructions with C^*-categories

2022-05-06T15:08:24Z

132.199.243.28: Created page with " C^*-categories are a useful tool in operator algebras, appearing naturally in the study of quantum groups, subfactors, and K-theory, among other things. Some constructions w..."

C^*-categories are a useful tool in operator algebras, appearing naturally in the study of quantum groups, subfactors, and K-theory, among other things. Some constructions which are relevant in these applications can be phrased in terms of bicolimits. In this talk I will discuss a general approach to deal with bicolimits of C^*-categories, illustrate this with a few examples, and point out some peculiarities.

(Based on joint work with J. Antoun)

Fibrations and lax limits of (oo,2)-categories

2022-05-06T15:08:07Z

132.199.243.28: Created page with "We study four types of (co)cartesian fibrations of oo-bicategories over a given base B, and prove that they encode the four variance flavors of B-indexed diagrams of oo-catego..."

We study four types of (co)cartesian fibrations of oo-bicategories
over a given base B, and prove that they encode the four variance flavors of
B-indexed diagrams of oo-categories. We then use this machinery to set up a
general theory of 2-(co)limits for diagrams valued in an oo-bicategory, capable
of expressing lax, weighted and pseudo limits. When the oo-bicategory at
hand arises from a model category tensored over marked simplicial sets, we
show that this notion of 2-(co)limit can be calculated as a suitable form of
a weighted homotopy limit on the model categorical level, thus showing in particular the existence of these 2-(co)limits in a wide range of examples.

Twisted Homology Operations

2022-05-06T15:07:52Z

132.199.243.28: Created page with "Abstract: In the 70s, Fred Cohen and Peter May gave a description of the mod p homology of a free E_n-algebra in terms of certain homology operations, known as Dyer--Lashof op..."

Abstract: In the 70s, Fred Cohen and Peter May gave a description of the mod p homology of a free E_n-algebra in terms of certain homology operations, known as Dyer--Lashof operations, and the Browder bracket. These operations capture the failure of the E_n multiplication to be strictly commutative, and they prove useful for computations. After reviewing the main ideas from May and Cohen's work, I will discuss a framework to generalize these operations to homology with certain twisted coefficient systems and give a complete classification of twisted operations for E_{\infty}-algebras. I will also explain computational results that show the existence of new operations for E_2-algebras. Finally, I will discuss examples and applications of this theory.

A double (∞,1)-categorical nerve for double categories

2022-05-06T15:07:38Z

132.199.243.28: Created page with "A 2-category can be seen as an internal category to categories with discrete category of objects, i.e., a horizontal double category with only trivial vertical morphisms. Some..."

A 2-category can be seen as an internal category to categories with discrete category of objects, i.e., a horizontal double category with only trivial vertical morphisms. Some aspects of 2-category theory, such as 2-limits, benefit from a passage to double categories. Going to the ∞-world, we expect to have a similar picture, which would allow one to develop aspects of (∞,2)-category, such as (∞,2)-limits, using double (∞,1)-categories.

A double (∞,1)-category was defined by Haugseng as a Segal object in complete Segal spaces, and then an (∞,2)-category in the form of a 2-fold complete Segal space can be interpreted as a ``horizontal'' double (∞,1)-category. In this talk, I will consider a slightly modified version of these double (∞,1)-categories and will give a nerve construction from double categories into double (∞,1)-categories. This nerve is right Quillen and homotopically fully faithful from a model structure on the category of double categories constructed in a joint work with Maru Sarazola and Paula Verdugo. By restricting along a ``homotopical'' horizontal embedding of 2-categories into double categories, we get a nerve from 2-categories into 2-fold complete Segal spaces, which is also right Quillen and homotopically fully faithful. I will show that these nerves are further compatible in a precise sense with the horizontal embedding of 2-categories into double categories, and this says that the ∞-setting indeed extends the strict setting.

On the Balmer spectrum of derived Mackey functors

2022-05-06T15:07:23Z

132.199.243.28: Created page with "A result of Devinatz-Hopkins-Smith describes the spectrum of prime ideals of finite spectra. Under this identification the information encoded by the zeroth and infinite chrom..."

A result of Devinatz-Hopkins-Smith describes the spectrum of prime ideals of finite spectra. Under this identification the information encoded by the zeroth and infinite chromatic levels can be identified with the spectrum of the derived category of integers, which by a result of Hopkins-Neeman is just equivalent to Spec(Z). It turns out that in the equivariant context neither the spectrum of the usual derived category of Mackey functors nor the spectrum of the Burnside ring play the role of Spec(Z). Given a finite group G, we show that Kaledin's category of derived G-Mackey functors describes the zeroth and infinite chromatic levels of the Balmer spectrum of finite G-spectra. We compute the Balmer spectrum of derived G-Mackey functors. Along the way we will identify Kaledin's category with the homotopy category of the stable infinity category of HZ-linear spectral Mackey functors in the sense of Barwick. This is all joint with B. Sanders and C. Wimmer.

Higher homotopy categories

2022-05-06T15:07:06Z

132.199.243.28: Created page with "I will review the construction of the higher homotopy categories associated to an infinity-category and discuss some of their properties, especially in connection with higher..."

I will review the construction of the higher homotopy categories associated to an infinity-category and discuss some of their properties, especially in connection with higher
weak (co)limits. These objects define a natural sequence of refinements for the comparison between homotopy commutativity and homotopy coherence, but their study seems to have received less attention than the classical homotopy category. Moreover, I will discuss some ongoing work on adjoint functor theorems in this context and
a version of the classical Brown representability theorem for higher homotopy categories. I will then introduce a definition of K-theory for these objects and present some results about the comparison with Waldhausen K-theory. Lastly, I will also briefly discuss generalizations of Grothendieck derivators and derivator K-theory to the context
of (n,1)-categories, and present analogous results about the comparison with Waldhausen K-theory.

An identification of the Baum-Connes and Davis-Lück assembly maps

2022-05-06T15:06:46Z

132.199.243.28: Created page with "In 1998, Davis and Lück gave a homotopy-theoretical construction of the Baum-Connes assembly map (with trivial coefficients) using spectra over the orbit category. We constru..."

In 1998, Davis and Lück gave a homotopy-theoretical construction of the Baum-Connes assembly map (with trivial coefficients) using spectra over the orbit category. We construct from any G-C*-algebra A a K-theory spectrum over the orbit category and give an identification of the resulting Davis-Lück map with the classical Baum-Connes map (with coefficients in A). Our main ingredients are the localization picture of the assembly map by Meyer and Nest and a version of Green's imprimitivity theorem for C*-categories.

Characteristic classes of framed fibre bundles

2022-05-06T15:06:31Z

132.199.243.28: Created page with "'''Nils Prigge''' (ETH): ''Characteristic classes of framed fibre bundles'' Abstract: In this talk I will discuss ongoing work to generalize Kontsevich's construction of char..."

'''Nils Prigge''' (ETH): ''Characteristic classes of framed fibre bundles''

Abstract: In this talk I will discuss ongoing work to generalize Kontsevich's construction of characteristic classes of certain fibre bundles, and I will highlight the connection to the rational homotopy theory of modules over the little disk operad and embedding calculus.

(In)finiteness properties of automorphism spaces of manifolds

2022-05-06T15:06:18Z

132.199.243.28: Created page with "'''Manuel Krannich (Cambridge)''': ''(In)finiteness properties of automorphism spaces of manifolds'' Abstract: After surveying the state of the art in homotopical finiteness..."

'''Manuel Krannich (Cambridge)''': ''(In)finiteness properties of automorphism spaces of manifolds''

Abstract: After surveying the state of the art in homotopical finiteness conditions of diffeomorphism groups of manifolds, I will explain recent work with M. Bustamante and A. Kupers in which we show that the classifying space of the diffeomorphism group of a high-dimensional closed manifold M of even dimension is of finite type as long as the fundamental group of M is finite.

The fiber of Persistent Homology

2022-05-06T15:06:02Z

132.199.243.28: Created page with "'''Jacob Leygonie''' (Oxford): ''The fiber of Persistent Homology'' Abstract: Persistent Homology (PH) is a central descriptor in Topological Data Analysis (TDA) that encodes..."

'''Jacob Leygonie''' (Oxford): ''The fiber of Persistent Homology''

Abstract: Persistent Homology (PH) is a central descriptor in Topological Data Analysis (TDA) that encodes the topological properties of a real-valued function on a space by means of its sub-level sets. But in fact it remains mysterious what information is really captured by PH and what information is lost; formally this means that the fiber of PH is not understood. Apart from its relevance to the numerous applications of Persistent Homology, we will see that this fiber is a beautiful object.

Cohomology of singularity categories and equivariant vanishing cycles

2022-05-06T15:05:48Z

132.199.243.28: Created page with "Given a regular scheme X over a strictly henselian trait S, one can regard the generic fiber X_η as a regular variety degenerating to the special fiber X_0 , that may be sing..."

Given a regular scheme X over a strictly henselian trait S, one can
regard the generic fiber X_η as a regular variety degenerating to the special fiber X_0 ,
that may be singular. Then, one can consider at least two invariants reflecting the
singularities of X_0 : the sheaf of vanishing cycles and the category of singularities
of X_0 . It is known that these two objects are strictly related.
We will discuss the situation where X is a regular scheme over a regular local
ring of dimension n ≥ 1. Even more generally, we will consider the case where X is
a regular scheme endowed with a global section of a vector bundle of rank n≥1 and
we will see how the connection between vanishing cycles and singularity categories
generalizes in this case. We will see that a theorem of D. Orlov and J. Burke- M. Walker allows us to reduce to the case of a regular scheme with a global section
of a line bundle. The fact that the line bundle may be non-trivial forces us to
consider a G_m-equivariant version of (inertia invariant) vanishing cycles.
This talk covers the work carried out in the preprint arXiv:2009.13359.

Topological exodromy with coefficients

2022-05-06T15:05:32Z

132.199.243.28: Created page with "I will survey ongoing work with Jean-Baptiste Teyssier. Motivated by the study of wild character varieties, we were led to revisit and improve Treumann-Lurie's results on exod..."

I will survey ongoing work with Jean-Baptiste Teyssier. Motivated by the study of wild character varieties, we were led to revisit and improve Treumann-Lurie's results on exodromy in the topological setting. In this seminar I will explain how to realize the exodromy equivalence via an explicit push-pull ; as an intermediate step, we establish (folkloristic) formulas for the stalks of the constructible sheaves obtained via exodromy. As a consequence, we manage to drop many assumptions required in the approach described in Higher Algebra. If time permits, I'll sketch a couple of applications to the construction of algebraic moduli spaces.

Algebraic models of p-adic homotopy types

2022-05-06T15:05:16Z

132.199.243.28: Created page with "'''Hadrian Heine''' (Osnabrück): ''Algebraic models of p-adic homotopy types'' Abstract: In this talk I will recall Mandell's theorem classifying connected p-complete nilpot..."

'''Hadrian Heine''' (Osnabrück): ''Algebraic models of p-adic homotopy types''

Abstract: In this talk I will recall Mandell's theorem classifying connected p-complete nilpotent spaces of finite p-type by E_infty-algebras over the algebraic closure of the field with p-elements. After that I will discuss a variant of Mandell's theorem via E_infty-coalgebras, which is joint work in progress with Manfred Stelzer.

Higher Segal spaces via higher excision

2022-05-06T15:05:02Z

132.199.243.28: Created page with "'''Tashi Walde''' (TUM): ''Higher Segal spaces via higher excision'' Abstract. Higher Segal spaces form an interesting hierarchy of higher structures which generalize the cla..."

'''Tashi Walde''' (TUM): ''Higher Segal spaces via higher excision''

Abstract. Higher Segal spaces form an interesting hierarchy of higher structures
which generalize the classical Segal spaces used to encode homotopy
coherent associative structures. In this talk I explain some basic
aspects of their theory and show how one can understand higher Segal
spaces conceptually in analogy to functor/manifold calculus.

Extended field theories are local and have classifying spaces

2022-05-06T15:04:44Z

132.199.243.28: Created page with "A central ingredient in quantum field theory that is usually expected, or demanded, is that it is local (meaning there is no ``spooky action at a distance" and all large-scale..."

A central ingredient in quantum field theory that is usually expected, or demanded, is that it is local (meaning there is no ``spooky action at a distance" and all large-scale phenomena are determined by their behavior at small scales). It has long been expected that the formalism of fully extended field theories naturally leads to this type of locality, however no proof of this fact has emerged in the literature. In this talk, I will discuss joint work with Dmitri Pavlov in which we formulate the notion of locality for extended field theories and prove that all extended field theories are local in this sense. Since we do not restrict to the case of topological field theories, this requires defining a smooth variant of the fully extended bordism category, which is amenable to geometric structures. I will also discuss applications to the Stolz--Teichner program, including a classifying space construction for field theories and the construction of power operations from field theories (following the recent work of Barthel, Berwick-Evans, and Stapleton).

Stable moduli spaces of hermitian forms

2022-05-06T15:04:27Z

132.199.243.28: Created page with "In recent joint work with Calmès, Dotto, Harpaz, Land, Moi, Nardin and Nikolaus we developed a formalism for Grothendieck-Witt spectra of stable categories, that is very amen..."

In recent joint work with Calmès, Dotto, Harpaz, Land, Moi, Nardin and Nikolaus we developed a formalism for Grothendieck-Witt spectra of stable categories, that is very amenable to computation, in particular enjoying a tight relation to Witt-(or L-)spectra. After briefly recalling the set-up, I will explain how this theory recovers the classical Grothendieck-Witt animae of ordinary rings, which are defined as group completions of moduli spaces of unimodular forms over R. In combination these statements allow us to solve a number of open problems, and allow access to the stable homology of orthogonal and symplectic groups over the integers for example.

The comparison itself is a hermitian analogue of Quillen's `+=Q´ theorem and the Gillet-Waldhausen theorem, though our proof proceeds very differently: It is based on ideas from the theory of cobordism categories in manifold topology, of which we provide an algebraic analog based on Ranicki's algebraic surgery theory.

Equivariant higher twisted K-theory of SU(n) via exponential functors

2022-05-06T15:04:12Z

132.199.243.28: Created page with "Twisted K-theory is a variant of topological K-theory that allows local coefficient systems called twists. For spaces and twists equipped with an action by a group, equivaria..."

Twisted K-theory is a variant of topological K-theory that allows local coefficient systems
called twists. For spaces and twists equipped with an action by a group, equivariant twisted
K-theory provides an even finer invariant. Equivariant twists over Lie groups gained increasing
importance in the subject due to a result by Freed, Hopkins and Teleman that relates the
corresponding K-groups to the Verlinde ring of the associated loop group. From the point of
view of homotopy theory only a small subgroup of all possible twists is considered in classical
treatments of twisted K-theory. In this talk I will discuss an operator-algebraic model for
equivariant higher (i.e. non-classical) twists over SU(n) induced by exponential functors on
the category of vector spaces and isomorphisms. These twists are represented by Fell bundles
and the C*-algebraic picture allows a full computation of the associated K-groups at least
in low dimensions. I will also draw some parallels of our results with the FHT theorem.
This is joint work with D. Evans.

Algebraic K-theory of Lawvere theories

2022-05-06T15:03:52Z

132.199.243.28: Created page with "The algebraic K-theory of Lawvere theories unifies old and new group homology computations. I will review this in the first part of the talk. Then I will explain how the basic..."

The algebraic K-theory of Lawvere theories unifies old and new group homology computations. I will review this in the first part of the talk. Then I will explain how the basic assembly maps in higher algebraic K-theory can be understood from this perspective. Many examples illustrate the theory. This is joint work with Anna Marie Bohmann.

Modular Invariants in Topology and Analysis

2022-05-06T14:53:04Z

132.199.243.28: Created page with "__NOTOC__ =Modular Invariants in Topology and Analysis= Download conference poster: [http://www.mathematik.uni-r.de/loeh/sfb-higher-invariants/sfb_modularinvariants.pdf pdf]..."

__NOTOC__

=Modular Invariants in Topology and Analysis=

Download conference poster: [http://www.mathematik.uni-r.de/loeh/sfb-higher-invariants/sfb_modularinvariants.pdf pdf]

==Date/Location==

The conference will take place in the week '''September 8-12, 2014''' at the [http://www.mathematik.uni-r.de Faculty of Mathematics] of the [http://www.uni-r.de Universität Regensburg].

==Scientific Organisers==

* Matthew Ando
* Gerd Laures
* Weiping Zhang

==Local Organisers==

* [//www.uni-regensburg.de/Fakultaeten/nat_Fak_I/Bunke/index.html U. Bunke]
* [//homepages.uni-regensburg.de/~nan25776/ N. Naumann]
* [//www.uni-regensburg.de/Fakultaeten/nat_Fak_I/nikolaus/ T. Nikolaus]

==Aims/Scope==

The rough intention of the conference is to bring together researchers interested in the following fields:

* topological modular forms and generalizations
* modular invariants from Dirac operators
* secondary and higher invariants related to the Witten genus and generalizations - geometric and field theoretic constructions
* vertex operator algebraic aspects
* other sources of modularity of geometric and analytic invariants

==Invited Speakers==

Speakers include:

* Dan Berwick Evans (Stanford)
* Anand Dessai (Freiburg)
* Nora Ganter (Melbourne)
* Vassili Gorbounov (Aberdeen)
* Owen Gwilliam (Berkeley)
* Fei Han (National University of Singapore)
* Hans Werner Henn (Strasbourg)
* Michael Joachim (Münster)
* Nitu Kitchloo (Johns Hopkins University)
* Anatoly Libgober (Chicago)
* Xiaonan Ma (Jussieu)
* Akhil Mathew (Berkeley)
* Lennart Meier (Virginia)
* Stephan Stolz (Notre Dame)
* Vesna Stojanoska (Bonn)
* Peter Teichner (Bonn)

==Participants==

* H. Aaya (Casablanca)
* D. Absmeier (Bochum)
* B. Ammann (Regensburg)
* B. Arnold (Bonn)
* M. Bayeh (Regina)
* J. Beardsley (Johns Hopkins Univ.)
* H. von Bodecker (Bielefeld)
* L. Borutzky (Bonn)
* D. Bruegmann (Bonn)
* St. Chadwick (Univ. of California)
* I. Galvez-Carillo (Terassa)
* R. Haugseng (Bonn)
* D. Heard (Bonn)
* H. Heine (Osnabrück)
* J. Heller (Bonn)
* S. Kandel (Bonn)
* A. Krause (Bonn)
* J. Lind (Regensburg)
* B. Liu (Köln)
* Cl. Löh (Regensburg)
* V. Lorman (Johns Hopkins Univ.)
* M. Ludewig (Potsdam)
* I. Mamouni (Rabat)
* A. Mazel-Gee (Berkeley)
* A. Nakade (Johns Hopkins Univ.)
* J. Noel (Regensburg)
* M. Olbermann (Bochum)
* G. Raptis (Regensburg)
* O. Raventos-Morea (Regensburg)
* M. Spong (Berlin)
* J. Sprang (Regensburg)
* N. Stapleton (Bonn)
* S. Thyssen (Bochum)
* A. Tonks (London)
* M. Völkl (Regensburg)
* St. Wittkamp (Bochum)
* K. Waldorf (Greifswald)
* T. Wurzbacher (Bochum)

==Registration desk information==

The registration desk will be open on Monday from 8:00 in room M104 (in the math department). Please have your tickets and bank details ready.

Emergency contact: 0179 9463648 (U. Bunke) or 0176 21148539 (T. Nikolaus)

==Schedule==

The talks take place in lecture hall H31 in the math department. To see titles and abstract, click on any name marked boldface !

{| align="center" cellpadding="20" cellspacing="0" border="1"
!
!Monday
!Tuesday
!Wednesday
!Thursday
!Friday
|-
| 09.00 - 10.00
|[[Teichner]]
|[[Kitchloo]] 
|[[Ma]]
|[[Henn]]
|[[Gorbunov]]
|-
| 10.00 - 10.30
| colspan="5"| Coffee in M104
|-
|10:30 - 11:30
|[[Gwilliam]]
|[[Joachim]]
|[[Berwick-Evans]]
|[[Mathew]]
|[[Han]]
|-
| 11.30 - 13:00
| colspan="5"| Lunch
|-
|13:30 - 14:30
|[[Dessai]]
|[[Ganter]]
|Excursion
|[[Meier]]
|
|-
| 14.30 - 15:00
| colspan="2"| Coffee in M104
| Excursion
| colspan="2"| Coffee in M104
|-
|15:00 - 16:00
|[[Stolz]]
|[[Libgober]]
|Excursion
|[[Stojanoska]]
|
|-
|16:15-17:15
|[[Gong Show I]]
|[[Gong Show II]]
|Dinner (18:00-21:00)
|soccer (17:00-19:00)
|

|}

==Excursion and Dinner==

We will hike from Regensburg to [https://www.google.de/maps/place/Gasthof+Prösslbräu/@49.043312,12.0302021,15z/data=!4m2!3m1!1s0x479fbf94af266df5:0x7355baf4dab1c3e?hl=de Adlersberg], where we have dinner (and beer) in a very nice [http://www.adlersberg.com Biergarten]. The hike will be about 8-9 km through the 'Winzerer Höhen', a nice area along the Danube.

We meet at 3:00 pm at the [https://www.google.de/maps/place/Steinerne+Brücke/@49.022492,12.097272,17z/data=!3m1!4b1!4m2!3m1!1s0x479fc1a57a81a11b:0xbbc0d40690282cda steinerne Brücke] in Regensburg downtown and plan to be in Adlersberg around 6:00 pm. After dinner there will be a chartered bus which takes us back to Regensburg. For those how do not want to hike we will also organize transportation to Adlersberg.

==Soccer==

At thursday afternoon we will play soccer at the university sport center. Note that we play on artificial turf.

Opening Conference

2022-05-06T14:52:33Z

132.199.243.28: Created page with "__NOTOC__ =Opening Conference: Higher Invariants= Download conference poster: [http://www.mathematik.uni-r.de/loeh/sfb-higher-invariants/sfb_openingconferenceposter.pdf pdf]..."

__NOTOC__

=Opening Conference: Higher Invariants=

Download conference poster: [http://www.mathematik.uni-r.de/loeh/sfb-higher-invariants/sfb_openingconferenceposter.pdf pdf]

Download conference images: [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/dsc_9102.jpg jpg1] [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/dsc_9104.jpg jpg2]

==Date/Location==

The conference will take place in the week '''September 22-26, 2014''' at the [http://www.mathematik.uni-r.de Faculty of Mathematics] of the [http://www.uni-r.de Universität Regensburg].

==Organisers==

* [//www.uni-regensburg.de/Fakultaeten/nat_Fak_I/Bunke/index.html U. Bunke]
* [//www.uni-regensburg.de/Fakultaeten/nat_Fak_I/Jannsen/index.html U. Jannsen]
* [//www.mathematik.uni-regensburg.de/Mat4/kings G. Kings]

==Invited Speakers==

* J. Ayoub
* J.-M. Bismut
* J.-B. Bost
* M. Bucher-Karlsson
* J.I. Burgos Gil
* A. Ducros
* G. Faltings
* P. Goerss
* S. Goette
* T. Hartnick
* L. Hesselholt
* D. Rössler
* S. Saito
* T. Schick
* E. Urban
* E. Viehmann
* N. Wahl
* A. Werner

==Registration==

Please send the following information to [mailto:opening-conference@sfb-higher-invariants.de opening-conference@sfb-higher-invariants.de]

First Name:

Last Name:

Affiliation:

Date of arrival/departure:

Support applied for (if any, leave blank otherwise):

==Financial Support==

Financial support for travel/accomodation is available for participants who are PhD students or post-docs; please indicate in your registration email whether you apply for financial support.

==Participants==
* B. Altmann (Regensburg)
* B. Ammann (Regensburg)
* P. Antonini (Paris)
* F. Bambozzi (Regensburg)
* M. Blank (Regensburg)
* B. Dietel (Regensburg)
* A. Engel (Augsburg)
* V. Ertl (Regensburg)
* A. Farahmandparsa (Gießen)
* S. Friedl (Regensburg)
* M. Groechenig (London)
* W. Gubler (Regensburg)
* A. Hase (Haifa)
* D. Heard (Bonn)
* H. Heine (Osnabrück)
* G. Henry (Regensburg)
* J. Hertel (Regensburg)
* T. Huynh (Paris-Sud)
* R. Iwasa (Tokyo)
* P. Jell (Regensburg)
* M. Kakde (London)
* M. Kerz (Regensburg)
* K. Kröncke (Regensburg)
* S. Krysl (London)
* A. Kübel (Leipzig)
* K. Künnemann (Regensburg)
* A. Laskar (Regensburg)
* C. Lazda (London)
* J. Lind (Regensburg)
* C. Löh (Regensburg)
* M. Lüders (Regensburg)
* F. Madani (Regensburg)
* F. Martin (Regensburg)
* K. Murakami (Keio University)
* M. Nagel (Regensburg)
* N. Naumann (Regensburg)
* Y. Nemoto (Keio University)
* T. Nikolaus (Regensburg)
* S. Omi (Keio University)
* K. Orr (Indiana)
* A. Perucca (Regensburg)
* M. Pilca (Regensburg)
* M. Powell (Bonn)
* G. Raptis (Regensburg)
* O. Raventós-Morera (Regensburg)
* F. Schneider (Regensburg)
* C. Schrade (Regensburg)
* X. Shen (Regensburg)
* J. Sixt (London)
* J. Smacka (Regensburg)
* M. Spitzweck (Osnabrück)
* J. Sprang (Regensburg)
* F. Strunk (Regensburg)
* G. Tamme (Regensburg)
* A. Voitovitch (Regensburg)
* A. Weber (Regensburg)
* K. van Woerden (Regensburg)
* Y. Wu (Regensburg)
* F. Wutz (Regensburg)
* S. Xie (Paris-Sud)
* Q. Xu (Regensburg)
* K. Yamada (Keio University)
* Y. Zähringer (London)
* Y. Zhang (Paris-Sud)
* Y. Zhao (Regensburg)

==Registration desk information==

The registration desk will be open on Monday from 8:30 in room M104 (math department). Please have your tickets and bank details available.

==Schedule==

Opening Conference Higher Invariants 22.09.2014 - 26.09.2014

{| valign="top" align="center" cellpadding="5" cellspacing="0" border="1"
!Mon/Wed/Thu
!Monday 22.09.2014
! colspan="2" |Tuesday 23.09.2014
! colspan="2" |Wednesday 24.09.2014
!Thursday 25.09.2014
! colspan="2" | Friday 26.09.2014
|-
|09.30-10.30 Room H31
|valign="top"|Gerd Faltings Norms of Weierstrass sections
|09.00-10.00 Room H31
|valign="top"|Eva Viehmann The Bruhat-Tits stratification of affine Deligne-Lusztig varieties
|09.30-10.30 Room H31
|valign="top"|Joseph Ayoub Foliated topology and higher differential Galois theory
|valign="top"|Lars Hesselholt Topological cyclic homology and the p-adic L-function
|09.00-10.00 Room H31
|valign="top"|J. I. Burgos Gil Equidistribution of small points
|-
|10.30-11.00
|Coffee Break, M 104
|10.00-10.30
|Coffee Break, M 104
|10.30-11.00
| colspan="2" |Coffee Break, M 104
|10.00-10.15
|Coffee Break, M 104
|-
| rowspan="2"|11.00-12.00 Room H31
| rowspan="2"|Jean-Michel Bismut Index theory and the hypoelliptic Laplacian
| rowspan="2"|10.30-11.30 Room H31
| rowspan="2"|Paul Goerss The geometry of Lubin-Tate space and stable homotopy theory
| rowspan="2"|11.00-12.00 Room H31
| rowspan="2"|Damian Rössler Topics in the Arakelov theory of abelian schemes
| rowspan="2"|Eric Urban Selmer groups and Modular forms
|10.15-11.15 Room H31
|Antoine Ducros Polyhedra inside Berkovich spaces
|-
|11.15-11.30
|Coffee Break, M 104
|-
| rowspan="2"| 12.00-13.30 Mensa
| rowspan="2"| Lunch
| rowspan="2"|11.30-13.30 Mensa
| rowspan="2"| Lunch
| rowspan="2"| 12.00-13.30 Mensa
| rowspan="2" colspan="2"| Lunch
|11.30-12-30 Room H31
|valign="top"|Annette Werner Non-archimedean and tropical geometry
|-
|12.30-13.45
|Lunch (Mensa) Coffee / Cake (M104)
|-
|13.30-14.30 Room H31
|Shuji Saito Toward motives with modulus
| colspan="2"|Michelle Bucher-Karlsson Bounded cohomology and simplical volume
| colspan="2" rowspan="4" |Excursion Kelheim - Kloster Weltenburg
|Nathalie Wahl Homological stability for families and groups
|13.45-14.45 Room H31
|Jean-Benoit Bost Infinite rank hermitian vector bundles over arithmetic curves and analysis on pseudo-concave complex manifolds
|-
|14.30-15.00
| colspan="3" |Coffee Break, M 104
|Coffee Break, M 104
| rowspan="3" colspan="2" |
|-
|15.00-16.00 Room H31
|Tobias Hartnick From Euler to higher cohomological invariants and back
| colspan="2"|Thomas Schick K-theory and K-homology for smooth actions of p-adic groups, with view toward a Chern character
|Sebastian Goette Morse theory and analytic torsion for families
|-
|19.00
|
| colspan="2"|Dinner at "Leerer Beutel"
|
|}
To register please come to room M 104 on Monday morning. All talks will be presented in H 31, whereas coffee will be served in M 104.

Continuous K-theory of p-adic rings

2022-05-06T14:52:11Z

132.199.243.28: Created page with "=Continuous K-theory of p-adic rings (after Beilinson)= ==Date/Location== The workshop takes place from September 29-October 2, 2014 at the [https://www.uni-marburg.de/uni-b..."

=Continuous K-theory of p-adic rings (after Beilinson)=

==Date/Location==

The workshop takes place from September 29-October 2, 2014 at the [https://www.uni-marburg.de/uni-bund/kwt Marburger Haus] in Kleinwalsertal (Austria).

==Lecture Series==

Alexander Beilinson (Chicago)

==Local Organisers==

Uwe Jannsen, Moritz Kerz, Guido Kings

==Aims/Scope==

The workshop will consist of a several lectures by Alexander Beilinson and lectures by the participants of the seminar. The aim is to study recent work of Beilinson on the calculation of continuous K-theory of p-adic rings, [http://arxiv.org/abs/1312.3299 arXiv].

Detailed program to follow.

==Registration==

Registration is closed.

List of participants:

Beilinson, Alexander (Chicago)

Binda, Frederico (Essen)

Castillejo, Pedro (FU Berlin)

Ertl, Veronika (Universität Regensburg)

Esnault, Helene (FU Berlin)

Fürstenheim, Gabriel (FU Berlin)

Haas, Johann (Universität Regensburg)

Iwasa, Ryomei (University of Tokyo)

Jannsen, Uwe (Universität Regensburg)

Kadke, Mahesh (Kings College London)

Kerz, Moritz (Universität Regensburg)

Kings, Guido (Universität Regensburg)

Lüders, Morten (Universität Regensburg)

Mantovani, Lorento (Universität Essen)

Morrow, Matthew (Universität Bonn)

Raventos, Oriol (Universität Regensburg)

Rezazadeh, Sina (FU Berlin)

Rubio, Marcel (FU Berlin)

Rüschoff, Christian (Universität Heidelberg)

Schmidt, Alexander (Universität Heidelberg)

Shuji Saito (Tokyo Institute of Technology)

Tamme, Georg (Universität Regensburg)

Venjakob, Otmar (Universität Heidelberg)

Wang, Shanwen (Universität Essen)

Witte, Malte (Universität Heidelberg)

Wu, Yitao (Universität Regensburg)

Yusufzai, Adeel (Universität Essen)

Zhao, Yigeng (Universität Regensburg)

First

2022-05-06T14:51:45Z

132.199.243.28: Created page with "__NOTOC__ =First Research group meeting on Chern classes in bounded cohomology= ==Dates and location== * The first meeting took place during the week '''February 23--27, 20..."

__NOTOC__

=First Research group meeting on Chern classes in bounded cohomology=

==Dates and location==

* The first meeting took place during the week '''February 23--27, 2015''' at the [http://www.uni-regensburg.de/mathematik/fakultaet/index.html Faculty of Mathematics] of [http://www.uni-regensburg.de/ Universität Regensburg].

==Aims and scope==

The goal of this meeting is to exchange ideas and to discuss approaches and recent progress to questions related to the project '''Simplicial Volume and Bounded Cohomology'''.

==Participants==

* Michelle Bucher-Karlsson (Geneva)
* Tobias Hartnick (Technion, Haifa)
* Guido Kings (Regensburg)
* Clara Löh (Regensburg)
* Andreas Ott (Heidelberg)

If you are interested in contributing actively to this focused meeting, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]

Spring School: Algebraic K-theory of Topological Algebras

2022-05-06T14:51:12Z

132.199.243.28: Created page with "__NOTOC__ =Spring School on Algebraic K-theory of Topological Algebras= Download Spring School poster: [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchoo..."

__NOTOC__

=Spring School on Algebraic K-theory of Topological Algebras=

Download Spring School poster: [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/sfb_spring_algKth.pdf pdf]

Download Spring School Photo: [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/KtheorySpring2015.JPG jpg] (Photo taken by [http://www.mathematik.uni-regensburg.de/ertl/ Veronika Ertl])

==Dates and Location==

The spring school will take place during the week '''March 16-20, 2015''' at the [http://www.uni-regensburg.de/mathematik/fakultaet/index.html Faculty of Mathematics] of [http://www.uni-r.de Universität Regensburg].

==Aims and Scope==

The aim of the spring school is to familiarise PhD students and young researchers with

* algebraic K-theory
* cyclic homology

so as to provide a platform to understand their connections with
* index theory
* isomorphism conjectures

in the realm of topological algebras. The activity will primarily consist of 3 invited minicourses and a couple of Gong Shows.

==Minicourses==
 

* '''Algebraic K-theory and stable topological algebras in the Baum-Connes and Farrell-Jones conjectures''' by [http://mate.dm.uba.ar/~gcorti/ Guillermo Cortiñas] (Buenos Aires) 
* '''Homological algebra and cyclic homology for bornological algebras''' by [http://www.uni-math.gwdg.de/template/?userid=3864&username=rameyer Ralf Meyer] (Göttingen) 
* '''Algebraic vs. topological K-theory''' by [http://tu-dresden.de/die_tu_dresden/fakultaeten/fakultaet_mathematik_und_naturwissenschaften/fachrichtung_mathematik/institute/geometrie/thom Andreas Thom] (Dresden) 

==Lecture Notes==
 

* Guillermo Cortiñas: Lectures [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Cortinas1+2.pdf 1+2]

* Ralf Meyer: Lectures [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Meyer1+2.pdf 1+2]

* Andreas Thom: Lectures [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Thom1+2.pdf 1+2]

(Notes taken by Laura Guthrie)

* Guillermo Cortiñas: Lectures [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Cortinas3.pdf 3], [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Cortinas4.pdf 4]

* Ralf Meyer: Lectures [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Meyer3.pdf 3], [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Meyer4.pdf 4]

* Andreas Thom: Lectures [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Thom3.pdf 3], [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/Thom4.pdf 4]

(Notes taken by [http://www.mi.fu-berlin.de/math/groups/top/members/postdoc/ullmann.html Mark Ullmann])
 

==Registered Participants==

* V. Aiello (Rome)

* B. Ammann (Regensburg)

* P. Arndt (Regensburg)

* E. Baccanelli (Milan)

* M. Bärtschi (Bonn)

* J. Bassi (Trieste)

* R. Bentmann (Göttingen)

* L. Buggisch (Münster)

* I. Castellano (Bari)

* C. Dahlhausen (Regensburg)

* M. De Chiffre (Dresden)

* S. Del Vecchio (Rome)

* S. Di Martino (Bari)

* M. E. Ellis Raggio (Montevideo)

* V. Ertl (Regensburg)

* E. Fossati (Bonn / Milan)

* L. Guthrie (London)

* D. Heiß (Regensburg)

* N. Ivankov (Münster)

* J. K. Kjaer (Notre Dame)

* D. Kodjabachev (Sheffield)

* B. Lancellotti (Milan)

* J. Lind (Regensburg)

* R. Loose (Münster)

* D. Luckhardt (Göttingen)

* F. Martin (Regensburg)

* O. Mohsen (Paris)

* D. Montero (Buenos Aires)

* S. Naarmann (Göttingen)

* G. Nadareishvili (Göttingen)

* M. Nagel (Regensburg)

* H. K. Nguyen (Regensburg)

* F. W. Pasini (Milan)

* M. Pieper (Bonn)

* C. Quadrelli (Milan)

* S. Quddus (Bhubaneswar)

* J. Quigley (Notre Dame)

* G. Raptis (Regensburg)

* O. Raventós (Regensburg)

* R. Reinauer (Münster)

* M. E. Rodríguez (Buenos Aires)

* S. Rossi (Rome)

* C. Schrade (Regensburg)

* N. Seeliger (Canberra)

* B. Seifert (Würzburg)

* Y. Semikina (Bonn)

* S. Sierra Murillo (Berlin)

* J. Sprang (Regensburg)

* G. Tartaglia (Buenos Aires)

* A. Tavkhelidze (Göttingen)

* E. Toffoli (Regensburg)

* M. Ullmann (Berlin)

* S. Vega (Buenos Aires)

* Y. Wang (Freiburg)

* C. Winges (Münster)

* K. van Woerden (Regensburg)

* J. Wu (Münster)

* X. Wu (Berlin)

* Y. Wu (Regensburg)

* C. Wulff (Augsburg)

* F. Wutz (Regensburg)

* R. Zeidler (Göttingen)

* Y. Zhao (Regensburg)

==Schedule==

{| align="center" cellpadding="20" cellspacing="0" border="1"
!
!Monday
!Tuesday
!Wednesday
!Thursday
!Friday
|-
| 08:30 - 09:00
| Registration and Coffee
in room M 104
| colspan="4"| Coffee
|-
| 09:00 - 10:15
|Lecture 1
(Cortiñas)
|Lecture 4
(Cortiñas)
|Lecture 7
(Meyer)
|Lecture 9
(Cortiñas)
|Exercises and Discussion
|-
| 10:15 - 10:45
| colspan="5"| Coffee
|-
| 10:45 - 12:00
|Lecture 2
(Meyer)
|Lecture 5
(Meyer)

Group photo directly afterwards
|Lecture 8
(Thom)
|Lecture 10
(Meyer)
|Lecture 12
(Cortiñas)
|-
| 12:00 - 14:00
| colspan="4"| Lunch
| END OF SCHOOL
|-
|14:00 - 15:15
|Lecture 3
(Thom)
|Lecture 6
(Thom)
| Soccer
(14:00 - 17:00)
|Exercises and Discussion
|
|-
| 15:15 - 15:45
| colspan="2"| Coffee
| Soccer
(14:00 - 17:00)
| Coffee
|
|-
|15:45 - 18:10
|Gong Show 1
(with small break in between)
|Gong Show 2
(with small break in between)
| Soccer
(14:00 - 17:00)
|Lecture 11
(Thom)

(15:45 - 17:00)
|

|}

* All lectures and exercise classes will take place at the mathematical department, lecture hall '''H 31'''.

* For the registration and coffee breaks we have reserved room '''M 104'''.

==Gong Show==

Download Gong Show Titles: [http://www.mathematik.uni-regensburg.de/mahanta/RegensburgSpringSchool/GongShow.pdf pdf]

{| align="center" cellpadding="20" cellspacing="0" border="1"
!
!15:45 - 15:55
!16:00 - 16:10
!16:15 - 16:25
!16:30 - 16:40
!16:45 - 16:55
!17:00 - 17:10
!17:15 - 17:25
!17:30 - 17:40
!17:45 - 17:55
!18:00 - 18:10
|-
| Monday
| C. Winges
| J. Lind
| X. Wu
| G. Nadareishvili
| -
| M. E. Ellis Raggio
| N. Ivankov
| G. Tartaglia
| M. Ullmann
| C. Quadrelli
|-
| Tuesday
| R. Zeidler
| C. Wulff
| M. Pieper
| -
| -
| R. Bentmann
| I. Castellano
| S. Quddus
| J. Wu
| -
|}

==Practical Information==

* ACCOMMODATION: Help will be provided in finding accommodation.

* TRAVEL: In order to reach the university kindly follow the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

* INTERNET: Access to '''eduroam''' is available throughout the mathematics building.

==Organisers==

* [http://www.mathematik.uni-regensburg.de/Bunke/ Ulrich Bunke] (Regensburg)
* [http://www.uni-regensburg.de/mathematik/mathematik-engel/ Alexander Engel] (Regensburg)
* [http://www.mathematik.uni-regensburg.de/mahanta/ Snigdhayan Mahanta] (Regensburg)

Second

2022-05-06T14:50:48Z

132.199.243.28: Created page with "__NOTOC__ =Second Research group meeting on Chern classes in bounded cohomology= ==Dates and location== * The second meeting took place during the week '''July 20--24, 2015..."

__NOTOC__

=Second Research group meeting on Chern classes in bounded cohomology=

==Dates and location==

* The second meeting took place during the week '''July 20--24, 2015''' at the [http://www.uni-regensburg.de/mathematik/fakultaet/index.html Faculty of Mathematics] of [http://www.uni-regensburg.de/ Universität Regensburg].

==Aims and scope==

The goal of this meeting is to exchange ideas and to discuss approaches and recent progress to questions related to the project '''Simplicial Volume and Bounded Cohomology'''.

==Participants==

* Michelle Bucher-Karlsson (Geneva)
* Tobias Hartnick (Technion, Haifa)
* Guido Kings (Regensburg)
* Clara Löh (Regensburg)
* Andreas Ott (Heidelberg)

If you are interested in contributing actively to this focused meeting, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]

Summer School: Cohomology and Large Scale Geometry

2022-05-06T14:50:23Z

132.199.243.28: Created page with "__NOTOC__ Cohomology and Large Scale Geometry Regensburg, 27-31.07.2015. Organise..."

__NOTOC__


Cohomology and Large Scale Geometry



Regensburg, 27-31.07.2015.



Organisers: [http://www.mathematik.uni-regensburg.de/blank Matthias Blank], [https://sso.uni-regensburg.de/mathematik/mathematik-engel/ Alexander Engel].


=     Overview=
The summer school will take place at the [http://www.uni-r.de University of Regensburg] in Regensburg, Germany from 27th until 31th of July 2015.

We will study cohomological methods in large scale geometry and geometric group theory. There will be three mini-courses and additional invited talks.
==Mini-courses==

* '''Hyperbolicity and bounded cohomology'''
[http://www.dm.unipi.it/~frigerio/ Roberto Frigerio] (University of Pisa)

* '''Property (T) and large scale geometry'''
[http://www.mimuw.edu.pl/~pnowak/index/Piotr_W_Nowak.html Piotr Nowak] (University of Warsaw)

* '''L2-Betti numbers of discrete and non-discrete groups'''
[http://topology.math.kit.edu/english/21_53.php Roman Sauer] (Karlsruhe Institute of Technology)

==Plenary Speakers==
* [http://www.normalesup.org/~cornulier/index.html Yves de Cornulier] (University of Paris-South)
* Anastasia Khukhro (University of Neuchâtel)
* [https://people.math.ethz.ch/~alsisto/ Alessandro Sisto] (ETH Zurich)

==Registration==

If you want to participate, please fill out the following form: [https://docs.google.com/forms/d/15WK2FuF1I4R6_m6sH3-TzbNT5v-c9u1uA08BPTcKq5A/viewform Registration Form].

Limited financial support is provided by SFB 1085: Higher Invariants. You can apply for financial support via the registration form.

'''The deadline for applications for financial support is May 31st.'''

==Poster==
The conference poster can be found [http://www.mathematik.uni-r.de/blank/sfb_poster_school_clsg.pdf here].

==Photo==
The group photo is available [http://www.uni-regensburg.de/mathematik/mathematik-engel/medien/p1020289.jpeg here].

==Tentative Schedule==
* All lectures will take place in the biology wing (BIO 1, 1st floor), seminar room [http://www.uni-regensburg.de/impressum/medien/campus-english.pdf '''BIO 1.1.34''']
* Coffee breaks will be held nearby.
* Registration in room '''BIO 1.1.01.'''

{| align="center" cellpadding="20" cellspacing="0" border="1"
!Monday
!Tuesday
!Wednesday
!Thursday
!Friday
|-
| 09:00 - 09:45
Registration and Coffee
| colspan="4"| 08:30 - 09:00
Coffee
|-
| 09:45 - 11:00
Nowak I
| 09:00 - 10:15
Sauer II
| 09:00 - 10:15
Frigerio II
| 09:00 - 10:15
Nowak II
| 09:00 - 10:15
Frigerio IV
|-
| 11:00 - 11:30
Coffee
| colspan="4"| 10:15 - 10:45
Coffee
|-
| 11:30 - 12:45
Sauer I
| 10:45 - 12:00
Frigerio I
| 10:45 - 12:00
Sauer IV
| 10:45 - 12:00
Frigerio III
| 10:45 - 12:00
Nowak IV
|-
| colspan="4"| Lunch
| END OF SCHOOL
|-
| 15:00 - 16:00
Anastasia Khukhro 
| 14:15 - 15:30
Sauer III
| rowspan="3"| 14:00 - 17:00
Social Activity
| 14:15 - 15:30
Nowak III
| rowspan="3"|
|-
| rowspan="2"|
| 15:30 - 16:00
Coffee
| 15:30 - 16:00
Coffee
|-
| 16:00 - 17:00
Yves de Cornulier
| 16:00 - 17:00
Alessandro Sisto
|}

==Registered Participants as of July 13th, 2015==

* Braun, Sabine (Karlsruhe Institute of Technology)
* Bunke, Ulrich (Regensburg)
* Chaudhuri, Anupam (Institute Fourier Grenoble)
* Fauser, Daniel (Regensburg)
* Ferov, Michal (Southampton)
* Franceschini, Federico (Pisa)
* Gheysens, Maxime (EPFL)
* Jankiewicz, Kasia (McGill University)
* Koivisto, Juhani (Helsinki)
* Kropholler, Peter (Southampton)
* Kuzmin, Kirill (Pisa)
* Maccheroni, Roberta (Pisa)
* Marcinkowski, Michał (Wrocławski)
* Margolis, Alex (Oxford)
* Pilca, Mihalea (Regensburg)
* Plankl, Christian (Regensburg)
* Prem Johannes (Regensburg)
* Sabonis, Deividas (TU München)
* Savini, Alessio (Bologna)
* Sawicki, Damian (IMPAN)
* Schneider, Jakob (TU Dresden)
* Vigolo, Federico (Oxford)
* Wulff, Christopher (Augsburg)

==Practical Information==

* ACCOMMODATION: Help will be provided in finding accommodation.

* TRAVEL: In order to reach the university kindly follow the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

* INTERNET: Access to '''eduroam''' is available throughout the mathematics building.

==Contact==
If you have any questions, please contact one of the organisers:
* [http://www.mathematik.uni-r.de/blank/ Matthias Blank] (Regensburg)
* [http://www.uni-regensburg.de/mathematik/mathematik-engel/ Alexander Engel] (Regensburg)

Summer School: Algebraic K-theory and Trace Methods

2022-05-06T14:49:35Z

132.199.243.28: Created page with "__NOTOC__ =Summer School on Algebraic K-theory and Trace Methods= ==Dates and Location== The summer school will take place during the week '''August 3-7, 2015''' at the [h..."

__NOTOC__

=Summer School on Algebraic K-theory and Trace Methods=

==Dates and Location==

The summer school will take place during the week '''August 3-7, 2015''' at the [http://www.uni-r.de Universität Regensburg] in the biology wing lecture hall H51.

==Aims and Scope==

The aim of this summer school is to familiarize PhD students and young researchers with trace methods in algebraic K-theory as well as to present some recent advancements in the field.

The activity will consist of 2 four-part lecture series as well as a series of invited lectures. There will also be opportunities for junior participants to make short presentations.

==Mini Courses==

* '''Topological Hochschild homology and periodicity''' by [http://www.math.ku.dk/~larsh/ Lars Hesselholt] (Nagoya University/University of Copenhagen) 

* '''Trace methods in K-theory''' by [http://www.math.rutgers.edu/~weibel/ Charles Weibel] (Rutgers University) 

==Lecture series==

There will be invited lectures by:
* '''On the rational algebraic K-theory of S-algebras''' by [http://www.math.univ-paris13.fr/~ausoni/ Christian Ausoni] (University of Paris XIII) 

* '''The homotopy theory of cyclotomic spectra and the norm''' by [https://www.ma.utexas.edu/users/blumberg/ Andrew Blumberg] (University of Texas, Austin) 

* '''Localization sequences and trace maps''' [http://www.math.purdue.edu/~dgepner/ David Gepner] (Purdue University) 

* '''Logarithmic topological Hochschild homology''' by [http://www.math.uni-bonn.de/people/sagave/ Steffen Sagave] (University of Bonn)

==Financial Support==

Financial support for the conference and younger participants has been provided by the [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/index.php/Main_Page SFB 1085: Higher Invariants] and [http://www.esaga.uni-due.de/spp1786/ SPP 1786: Homotopy theory and algebraic geometry].

The application deadline for financial support has past, but registration remains open.

==Registration==

Please fill out the [https://docs.google.com/forms/d/1BsyCqURoBmsp4bx5I3douyjkUy8h2DE-DjiLLoEchQY/viewform?usp=send_form registration form].

==Practical Information==
MAP: [https://goo.gl/maps/SlstW Points of Interest].

[http://www.uni-regensburg.de/impressum/medien/campus-english.pdf University Map].

PUBLIC TRANSIT: [http://www.rvv.de/ Local bus system]. There are many useful buses typically, but the 6 will suffice for getting to and from the city center and the conference hall (nearest stops are either 'An der Kreuzbreite' or 'Neuprull'). There should be signs pointing to the lecture hall. One can also walk from the 'Universitat' bus stop, which is better served by the bus system. The above maps may prove helpful.

ACCOMMODATION: Conference participants will be expected to make their own arrangements. Those receiving financial support have been contacted with additional instructions.

Regensburg is a tourist destination and August is high season, so we encourage guests to book their rooms as early as possible. Here is a list of the standard hotels which we recommend:

1. [http://www.kaiserhof-am-dom.de Hotel Kaiserhof am Dom] (In the city center, must take a bus to the University.) 

2. [http://www.hotelapollo.de Hotel Apollo] (Near the conference, but limited eating options.)

3. [https://bookings.ihotelier.com/Hotel-Jakob-Regensburg/bookings.jsp?hotelId=86118 Hotel Jakob] (In the center, must take a bus to the University.) 

4. [http://www.hotel-central-regensburg.de Hotel Central] (In the city center, must take a bus to the University.) 

One can also check the standard alternatives:

1. [http://www.hotels.com/search.do?resolved-location=CITY%3A356645%3ASRS%3AUNKNOWN&destination-id=356645&q-destination=Regensburg,%20Germany&q-localised-check-in=02%2F08%2F2015&q-localised-check-out=07%2F08%2F2015&q-rooms=1&q-room-0-adults=1&q-room-0-children=0 Hotels.com] 

2. [https://www.airbnb.com/s/Regensburg?checkin=08%2F02%2F2015&checkout=08%2F07%2F2015&source=bb&ss_id=z3syjs1d Airbnb] 

* TRAVEL: In order to reach the university kindly follow the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

* INTERNET: Access to '''eduroam''' is available throughout the mathematics building. For those without eduroam access we will obtain a temporary guest account through the university.

* VEGAN [http://homepages-nw.uni-regensburg.de/~arp13290/restaurants/Hi-page-restaurants.html RESTAURANTS]

==Organisers==

* [http://www.nullplug.org/ Justin Noel] (Regensburg)
* Georgios Raptis (Regensburg)

==Schedule==
* All lectures will take place in the biology wing, lecture hall [http://www.uni-regensburg.de/impressum/medien/campus-english.pdf '''H 51''']

* Registration and coffee breaks will be held nearby.
{| align="center" cellpadding="20" cellspacing="0" border="1"
!
!Monday
!Tuesday
!Wednesday
!Thursday
!Friday
|-
| 09:30 - 10:00
| Registration and Coffee
in front of H51
| colspan="4"| Coffee
|-
| 10:00 - 11:00
|Weibel
(Lecture 1)
|Weibel
(Lecture 2)
|Sagave
(Lecture 1)
|Weibel
(Lecture 3)
|Weibel
(Lecture 4)
|-
| 11:00 - 11:15
| colspan="5"| Coffee
|-
| 11:15 - 12:15
|Hesselholt
(Lecture 1)
|Hesselholt
(Lecture 2)
Group photo directly afterwards
|Ausoni
(Lecture 1)

|Hesselholt
(Lecture 3)
|Hesselholt
(Lecture 4)
|-
| 12:15 - 14:00
| colspan="4"| Lunch
| END OF SCHOOL
|-
|14:00 - 15:00
|Blumberg
(Lecture 1)
|Blumberg
(Lecture 2)
| Excursion (Departure at 13:30!)
|Sagave
(Lecture 2)
|
|-
| 15:00 - 15:30
| colspan="2"| Coffee
| Excursion
| Coffee
|
|-
|15:30 - 16:30
|Gepner
(Lecture 1)
|Gepner
(Lecture 2)
| Excursion
|Ausoni
(Lecture 2)
|
|-
| 16:30 - 16:45
| colspan="2"| Coffee
| Excursion
| Coffee
|
|-
|16:45 - 17:05
|Merling 
|Rüschoff 
| Excursion
|Geisser
(16:45-17:45)
|
|-
|17:10 - 17:30
|Ullmann
|Yakerson
| Excursion
|Geisser 
|
|-
|17:35 - 17:55
|Malkiewich
| Cancelled
| Excursion
|Geisser 
|

|}

==Excursion==

On Wednesday afternoon there will be a nature walk/hike to the [http://www.klosterschenke-weltenburg.de/ Monastery Weltenburg], 'the oldest monastery-brewery in the world.' It has been in operation since 1050 and its 'dunkel' beer has won several awards.

We will meet at 13:30 at the university bus terminal to take a bus to Kelheim and then we will walk from there. The hike will be roughly 1.75 hours and runs partially along the [https://en.wikipedia.org/wiki/Danube Danube river] and partially through the forest. Half of the walk will be flat and the second half will involve walking up a non-trivial hill. We will then take a ferry across the river to the monastery. Participants can then enjoy the monastery and the surrounding area and/or enjoy the biergarten.

For the return trip we will take a short, but beautiful, [http://www.schiffahrt-kelheim.de/ boat ride] along the Danube back to Kelheim. We will meet at 17:20 before the boat dock. The boat leaves at 17:30. You must be on this boat! If you miss the boat please call one of the organizers and we will inform your next of kin. At the end of the conference we will have a brief moment of silence for those participants who failed to return from the excursion.

Once in Kelheim we will return by bus. The bus will stop at the Hotel Apollo and at the Hauptbahnhof. The expected return time will be 18:30-18:45.

General Advice:
* Sunscreen and insect repellent are recommended.
* Shoes appropriate for walking through the woods are recommended.
* You will need CASH for any purchases on the ferry or at the monastery/biergarten.

==Registered Participants as of July 31st, 2015==

* Arndt, Peter (Regensburg)
* Beckert, Falk (Wuppertal)
* Beshenov, Alexey (Bordeaux)
* Binda, Federico (Duisburg)
* Bubenzer, Paul (Münster)
* Bunke, Ulrich (Regensburg)
* Chen, Xin (Hamburg)
* Dahlhausen, Christian (Regensburg)
* Engel, Alexander (Regensburg)
* Ertl, Veronika (Regensburg)
* Gallauer, Martin (Univ. of Zurich)
* Gálvez Carrillo, Maria Immaculada (UPC)
* Geisser, Thomas (Rikkyo University)
* Glasman, Saul (MIT)
* Gritschacher, Simon (Oxford)
* Guliyev, Zaur (Univ. of Zurich)
* Guthrie, Laura (LSGNT)
* Guzman, Gabriela (Duisburg-Essen)
* Harris, Tom (Southampton)
* Haugseng, Rune (MPIM)
* Høgenhaven, Amalie (Copenhagen)
* Höning, Eva (Paris XIII)
* Horiuchi, Ryo (Copenhagen)
* Jackson, Artur (Purdue)
* Jahn, Thomas (LMU)
* Jin, Cao (Duisburg-Essen)
* Kjaer, Jens Jakob (Notre Dame)
* Kasprowski, Daniel (MPIM)
* Khan, Adeel (Duisburg-Essen)
* Konovalov, Andrei (HSE Moscow)
* Levikov, Filipp (Freie Univ. Berlin)
* Lind, John (Regensburg)
* Lopez-Avila, Alejo (Osnabrück)
* Mahanta, Snigdhayan (Regensburg)
* Maldonado, Osmar (Wien)
* Malkiewich, Cary (Illinois)
* Manh Toan, Nguyen (Duisburg-Essen)
* Mantovani, Lorenzo (Duisburg-Essen)
* Merling, Mona (Johns Hopkins)
* Nagel, Matthias (Regensburg)
* Naumann, Niko (Regensburg)
* Nguyen, Kim (Regensburg)
* Oesinghaus, Jakob (Zurich)
* Okay, Cihan (Western Ontario)
* Palacios, Joe (Liverpool)
* Patchkoria, Irakli (Copenhagen)
* Petit, Francois (Luxembourg)
* Pirashvili, Ilia (Leicester)
* Popa, Cristian-Ioan (Artois)
* Porta, Mauro (Florence)
* Prasma, Matan (Radboud Univ.)
* Quigley, James (Notre Dame)
* Raeder, Truls Bakkejord (NTNU)
* Raventós, Oriol (Regensburg)
* Rüschoff, Christian (Heidelberg)
* Sabonis, Deividas (TU Munich)
* Sadhu, Vivek (The Institute of Mathematical Sciences, Chennai)
* Schäppi, Daniel (Sheffield)
* Schrade, Christoph (Regensburg)
* Schulz, Julia (Hamburg)
* Seeliger, Nora (ANU)
* Shah, Jay (MIT)
* Sierra Murillo, Salvador (Freie Univ. Berlin)
* Stonek, Bruno (Paris 13)
* Strunk, Florian (Regensburg)
* Syed, Sabrina (Osnabrück)
* Tomas, Pavel (Independent University of Moscow)
* Tonks, Andrew (Leicester)
* Ullmann, Mark (Freie Univ. Berlin)
* Wang, Yi-Sheng (Freiburg)
* Wei, Rebecca (Northwestern)
* Wimmer, Christian (Bonn)
* Winges, Christoph (WWU Münster)
* van Woerden, Koen (Regensburg)
* Wu, Xiaolei (Freie Univ. Berlin)
* Wu, Yitao (Regensburg)
* Wutz, Franziska (Regensburg)
* Yakerson, Maria (Saint Petersburg State Univ.)
* Yamoul, Hicham (Casablanca)
* Yudin, Ivan (Coimbra)
* Zargar, Masoud (Princeton)
* Zeinalian, Mahmoud (LIU)
* Zhao, Yigeng (Regensburg)

Workshop "Regensburg days on non-archimedean geometry" 13.07.-14.07.2016

2022-05-06T14:49:08Z

132.199.243.28: Created page with "__NOTOC__ =''' Workshop "Regensburg days on non-archimedean geometry" 13.07.-14.07.2016= ==Dates and Location== The workshop takes place at Universität Regensburg from Jul..."

__NOTOC__

=''' Workshop "Regensburg days on non-archimedean geometry" 13.07.-14.07.2016=

==Dates and Location==

The workshop takes place at Universität Regensburg from July 13th to 14th 2016.
[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/plakatregensburgdays2016-2.pdf Poster]
==Organizers==
The workshop is organized by Walter Gubler, Klaus Künnemann and Florent Martin.

==Schedule==
[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/schedule-and-abstracts2.pdf Detailed schedule and abstracts]

Talks will be in BIO 1.1.34 (biology wing BIO 1, first floor) [http://www.uni-regensburg.de/impressum/medien/campus-english.pdf University Map].
Coffee breaks will be held nearby.

==Conference Images==
[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/foto.jpg Group photograph]

==Practical information==

* TRAVEL: In order to reach the university, kindly follow the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].
* INTERNET: Access to '''eduroam''' is available throughout the building.

==Contact==

If you are interested to participate or want to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]

SFB conference 3manifolds floer 2016

2022-05-06T14:48:43Z

132.199.243.28: Created page with "__NOTOC__ =''' 3-MANIFOLDS AND FLOER THEORIES = ==Dates and Location== The workshop takes place at the University of Regensburg from '''July 19th to 22nd 2016'''. ==Organ..."

__NOTOC__

=''' 3-MANIFOLDS AND FLOER THEORIES =

==Dates and Location==

The workshop takes place at the University of Regensburg from '''July 19th to 22nd 2016'''.

==Organizers==

The workshop '''3-manifolds and Floer theories'''
is organized by '''Stefan Friedl''' and '''Raphael Zentner'''.

The workshop will focus on topics in 3-manifolds and knot theory in relation with various types of Floer homology theories.

==Registration==

If you are interested in participation in the workshop please fill out the
[https://docs.google.com/forms/d/19-wGkjvkUBB7cNnxPNHyU7RReP5UeLGFQd5KbzXKpy0/viewform?usp=send_form registration form.]

The deadline for application for financial support is April 30th.

==Schedule==

Talks will be in H 51 (Tuesday, Thursday, Friday) and H 40 (Wednesday).
Coffee breaks will be held nearby (BIO 1.1.38, biology wing BIO 1, 1st floor). [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/campus-english_modified_new.pdf Campus map]

{| align="center" cellpadding="20" cellspacing="0" border="1"

!Tuesday
!Wednesday
!Thursday
!Friday
|-
| 09:30 - 10:00
Registration
10:00 - 11:00
 Joshua Greene 
| 09:30 - 10:30
Paolo Lisca
| 09:30 - 10:30
Andras Juhasz
| 09:30 - 10:30
Christine Lescop
|-
| 11:00 - 11:30
Coffee/Tea
| colspan="3" | 10:30 - 11:00
Coffee/Tea
|-
| 11:30 - 12:30
 Kim Froyshov 
| 11:00 - 12:00
Guillem Cazassus
| 11:00 - 12:00
Francesco Lin
| 11:00 - 12:00
Gilberto Spano
|-
| 12:30 - 14:30
LUNCH
| 12:00 - 13:15
LUNCH
| 12:00 - 14:00
LUNCH
| 12:00 - 13:30
LUNCH
|-
| 14:30 - 15:30
 Aliakbar Daemi 
| rowspan="6"| 13:30 - 19:30
Hiking tour to Kloster Weltenburg,
visit of the Biergarten, and

boat tour back through the Danube gorge
| 14:00 - 15:00
Paolo Ghiggini
| 13:30 - 14:15
Matthew Stoffregen
|-
| 15:30 - 16:00
Coffee/Tea
| 15:00 - 15:30
Coffee/Tea
| 14:15 - 14:45
Coffee/Tea
|-
| 16:00 - 16:45
 Sherry Gong 
| 15:30 - 16:30
Daniel Ruberman
| 14:45 - 15:30
Ian Zemke
|-
| 16:45 - 17:00
Break
| 16:30 - 16:45
Break
| rowspan="3"|
END OF WORKSHOP
|-
| 17:00 - 18:00
 Andrew Lobb 
| 16:45 - 17:45
Saso Strle
|-
|
| 19:30 -
 Conference Dinner 
in "Roter Hahn"
|}
==Titles and Abstracts==

* [[SFB_conference_3manifolds_floer_2016_abstracts|Titles and Abstracts]]

==Speakers==

* Guillem Cazassus (University of Toulouse)
* Aliakbar Daemi (Simons Center, Stony Brook)
* Kim Frøyshov (University of Oslo)
* Paolo Ghiggini (University of Nantes)
* Sherry Gong (Massachusetts Institute of Technology)
* Joshua Greene (Boston College)
* Andras Juhasz (University of Oxford)
* Christine Lescop (University Joseph Fourier Grenoble)
* Francesco Lin (Massachusetts Institute of Technology)
* Paolo Lisca (University of Pisa)
* Andrew Lobb (Durham University)
* Daniel Ruberman (Brandeis University)
* Gilberto Spano (Renyi Institute of Mathematics)
* Matthew Stoffregen (University of California Los Angeles)
* Saso Strle (University of Liubliana)
* Ian Zemke (University of California Los Angeles)

==Registered participants (as of July 6th, 2016)==

* Alfieri, Antonio (Central European University, Budapest)
* Behrens, Stefan (Utrecht University)
* Brown, Thomas (University of Cambridge)
* Collari, Carlo (Florenz)
* Collin, Olivier (UQAM)
* Dai, Irving (Princeton University)
* Feller, Peter (Boston College)
* Golla, Marco (Uppsala University)
* Habibi Esfahani, Saman (Sharif University of Technology)
* Haug, Luis (MIT)
* Herrmann, Gerrit (Regensburg)
* Hockenhull, Thomas (Imperial College London)
* Jeong, Gahye (California Institute of Technology)
* Kim, Min Hoon (KIAS)
* Klaasse, Ralph (Utrecht University)
* Kotelskiy, Artem (Princeton)
* Leigon, Ryan (Louisiana)
* Lee, Yi-Jen (CUHK)
* Marengon, Marco (Imperial College London)
* Masbaum, Gregor (Institut de Mathematiques de Jussieu, CNRS)
* Meumertzheim, Johanna (Regensburg)
* Mihajlović, Stefan (University of Belgrade)
* Nagel, Matthias (UQAM)
* Orson, Patrick (Durham)
* Pasini, Federico (University of Milano-Bicocca)
* Salmoiraghi, Federico (Louisiana State University)
* Scaduto, Christopher (Brandeis)
* Swiecicki, Krzysztof (Texas A&M)
* Toffoli, Enrico (Regensburg)
* Wong, Biji (Brandeis University)
* Yhee, Farrah (University of Michigan Ann Arbor)
* Yun, Ki-Heon (Sungshin Women's University/visiting Renyi institute of Mathematics)
* Zibrowius, Claudius (University of Cambridge)
* Zivanovic, Filip (University of Belgrade)

==Financial Support==

A limited amount of financial support for accomodation is available for PhD students and recent PhD's. Please apply by April 30th, see above. If you apply for funding please indicate your research area briefly.

==To get here==

If you arrive at Munich airport, you take the shuttle bus to Freising. The terminus of the bus is the Freising train station. From there you have frequent direct train services to Regensburg via ALX or RE trains. On Monday the departure times at Freising are at 8:08, 9:09, 10:08, 11:09, 12:08, 13:09, 14:08, 15:09, 16:08, 16:29, 17:08, 17:28, 18:08, 19:09, 20:08, 21:09, 22:08, 23:09 and 00:28.

==Contact==

If you wish to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de].

SFB conference LSD2016

2022-05-06T14:48:14Z

132.199.243.28: Created page with "__NOTOC__ =Workshop: Large Scale Dimensions= The workshop will take place during the week '''July 25-29, 2016''' at the [http://www.uni-regensburg.de/mathematik/fakultaet/in..."

__NOTOC__

=Workshop: Large Scale Dimensions=

The workshop will take place during the week '''July 25-29, 2016''' at the [http://www.uni-regensburg.de/mathematik/fakultaet/index.html Faculty of Mathematics] of [http://www.uni-r.de Universität Regensburg].

The poster may be downloaded [http://www.uni-regensburg.de/mathematik/mathematik-engel/medien/sfb_lsd_poster.pdf here]. (Note that there are two changes for the invited talks.)

==Registration==

If you want to participate please write an eMail to one of the organizers.

==Mini-courses==
* '''Asymptotic dimension of mapping class groups''' by [http://www.math.utah.edu/~bestvina/ Mladen Bestvina] (University of Utah) 
* '''Dimension local and global''' by [http://people.clas.ufl.edu/dranish Alexander Dranishnikov] (University of Florida) 
* '''Decomposing spaces and actions''' by [http://www.math.hawaii.edu/~erik/ Erik Guentner] (University of Hawai'i)

==Invited talks==

[http://people.clas.ufl.edu/dranish Alexander Dranishnikov]: Macroscopic dimension 
[http://www.math.utk.edu/~dydak/myWebPage/welcome.php Jerzy Dydak]: Countable asymptotic dimension and related topics 
[https://www.math.rutgers.edu/~sferry/ Steve Ferry]: An infinite-dimensional phenomenon in finite-dimensional topology 
[https://www.math.uni-augsburg.de/prof/diff/arbeitsgruppe/hanke Bernhard Hanke]: Homological invariance in large scale geometry 
[http://people.mpim-bonn.mpg.de/kasprowski/ Daniel Kasprowski]: On the K-theory of groups with finite decomposition complexity 
[http://math.iupui.edu/~dramras Daniel Ramras]: Straight finite decomposition complexity 
[http://www.fmf.uni-lj.si/~virk/ Žiga Virk]: Coarsely n-to-1 maps 

==Schedule==

Talks will be in lecture hall H 40.
Coffee breaks will be held nearby at BIO 1.1.38 (biology wing BIO 1, first floor) [http://www.uni-regensburg.de/impressum/medien/campus-english.pdf University Map].

[http://www.math.uni.wroc.pl/~marcinkow/lsd/abstracts.pdf Abstracts] of mini-courses and talks.

{| align="center" cellpadding="20" cellspacing="0" border="1"
!Monday
!Tuesday
!Wednesday
!Thursday
!Friday
|-
| 08:30 - 09:00
Registration
| colspan="4"| 08:30 - 09:00
Coffee
|-
| 09:00 - 10:15
Dranishnikov I
| 09:00 - 10:15
Guentner II
| 09:00 - 10:15
Dranishnikov III
| 09:00 - 10:15
Guentner III
| 09:00 - 10:15
Bestvina III
|-
| colspan="5"| 10:15 - 10:45
Coffee
|-
| 10:45 - 12:00
Guentner I
| 10:45 - 12:00
Dranishnikov II
| 10:45 - 12:00
Bestvina I
| 10:45 - 12:00
Bestvina II
| 10:45 - 12:00
Ramras
|-
| colspan="4"| Lunch
| END OF SCHOOL
|-
| 14:15 - 15:30
Dranishnikov
| 14:15 - 15:30
Virk
| rowspan="3"|
| 14:15 - 15:30
Ferry 
| rowspan="3"|
|-
| 15:30 - 16:00
Coffee
| 15:30 - 16:00
Coffee
| 15:30 - 16:00
Coffee
|-
| 16:00 - 17:15
Hanke
| 16:00 - 17:15
Dydak
| 16:00 - 17:15
Kasprowski
|-
|
| 17:30 - ∞
Poster session and pizza 
in M201 (math. faculty)
| 17:30 - 18:30
Guided tour
| Conference dinner
|
|}

==Guided Tour==
We will visit the Old Town Hall (Reichstagsmuseum).
The tour is entirely inside the building, thus it will take place regardless of the weather. We are going to meet at 17:25 in front of the information office (or inside in case of rain) at Rathausplatz (see the [https://www.google.de/maps/@49.0201213,12.0942335,19z map]).

==Registered Participants==

*Bernd Ammann (Regensburg) 
*Kyle Austin (Ben Gurion University of the Negev) 
*Grigori Avramidi (Ohio State University) 
*Mladen Bestvina (University of Utah) 
*Ulrich Bunke (Regensburg) 
*Luigi Caputi (Regensburg) 
*Trevor Davila (University of Florida) 
*Alexander Dranishnikov (University of Florida) 
*Thibaut Dumont (University of Utah) 
*Jerzy Dydak (University of Tennessee) 
*Daniel Fauser (Regensburg)
*Steve Ferry (Rutgers University) 
*Elia Fioravanti (University of Oxford) 
*Julius Grüning (WWU Münster) 
*Erik Guentner (University of Hawai'i) 
*Bernhard Hanke (Universität Augsburg) 
*Daniel Kasprowski (Max-Planck-Insitute, Bonn) 
*Robin Loose (WWU Münster) 
*Clara Löh (Regensburg) 
*Alex Margolis (University of Oxford) 
*Gregor Masbaum (Institut de Mathematiques de Jussieu, CNRS) 
*Atish J. Mitra (University of Montana) 
*Christoforos Neofytidis (SUNY Binghamton) 
*Seddik Ouakkas (University of Saida) 
*Janusz Przewocki (University of Gdańsk) 
*Daniel Ramras (Indiana University) 
*Damian Sawicki (IMPAN) 
*Benedikt von Seelstrang (Universität Augsburg) 
*Tulsi Srinivasan (Ben-Gurion University of the Negev) 
*Krzysztof Święcicki (Texas A&M) 
*Vera Tonic (University of Rijeka) 
*Žiga Virk (IST Austria) 
*Christopher Wulff (Universidad Nacional Autónoma de México) 
*Jiawen Zhang (University of Southampton)

==Practical Information==

* TRAVEL: In order to reach the university kindly follow the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].
* INTERNET: Access to '''eduroam''' is available throughout the mathematics building.

==Organisers==

* [http://www.uni-regensburg.de/mathematik/mathematik-engel/ Alexander Engel] (University of Regensburg)
* [http://www.math.uni.wroc.pl/~marcinkow Michał Marcinkowski] (University of Regensburg)

SFB conference arakelov2016

2022-05-06T14:47:47Z

132.199.243.28: Created page with "__NOTOC__ ='''ARAKELOV GEOMETRY - ARCHIMEDEAN AND NON-ARCHIMEDEAN ASPECTS= ==Dates and Location== The conference takes place at the University of Regensburg from '''Septemb..."

__NOTOC__

='''ARAKELOV GEOMETRY - ARCHIMEDEAN AND NON-ARCHIMEDEAN ASPECTS=

==Dates and Location==

The conference takes place at the University of Regensburg from '''September 5th to 9th 2016'''. [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/sfb_poster_arakelovgeometry_summer2016_final-1.pdf Poster]

==Organizers==

The conference '''Arakelov Geometry - Archimedean and Non-Archimedean Aspects'''
is organized by

'''Jose Ignacio Burgos Gil''', '''Walter Gubler''', '''Guido Kings''', and '''Klaus Künnemann'''.

This conference constitutes the eighth session of the '''Intercity Seminar on Arakelov Theory''' organized by '''Jose Ignacio Burgos Gil''', '''Vincent Maillot''' and '''Atsushi Moriwaki''' with previous sessions in Barcelona, Kyoto, Paris, and Rome.

==Schedule==

[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/schedule2.pdf Detailed schedule (version Sept 1st, 2016 and abstracts] 
Talks will be in lecture hall H 51. Coffee breaks will be held nearby.
[http://www.uni-regensburg.de/impressum/medien/campus-english.pdf Campus Map]

==Conference Images==

[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/2016photo1.jpg Group photograph]

==Participants==

* Altmann, Bastian (Regensburg)
* Bambozzi, Federico (Regensburg)
* Bost, Jean-Benoit (Orsay)
* Bunke, Ulrich (Regensburg)
* Chen, Huayi (Grenoble)
* Dolce, Paolo (Nottingham)
* Eriksson, Denis (Goeteborg)
* Fang, Yanbo (Paris Diderot)
* Fenzl, Thomas (Regensburg)
* Freixas, Gerard (Paris)
* Fresan, Javier (Zürich)
* Gasbarri, Carlo (Strassburg)
* Goswami, Souvik (Alberta)
* Gualdi, Roberto (Bordeaux / Barcelona)
* Guignard, Quentin (Bures-sur-Yvette)
* Ih, Suion (Colorado, Boulder)
* Ikoma, Hideaki (Kyoto)
* Javanpeykar, Ariyan (Mainz)
* Jell, Philipp (Regensburg)
* de Jong, Robin (Leiden)
* Kawaguchi, Shu (Kyoto)
* Köhler, Kai (Düsseldorf)
* Kramer, Jürg (Berlin)
* Kühn, Ulf (Hamburg)
* Liu, Chunhui (Paris)
* Liu, Yifeng (Northwestern)
* Maculan, Marco (Paris, Jussieu)
* Mai, Tien Long (UPMC)
* Maillot, Vincent (Paris)
* Martin, Florent (Regensburg)
* Navarro Garmendia, Alberto (ICMAT Madrid)
* Nickel, Matthias (Frankfurt)
* Odaka, Yuji (Kyoto)
* Pazuki, Fabien (Kopenhagen)
* von Pippich, Anna (Darmstadt)
* Randriambololona, Hugues (Telecom-ParisTech)
* Rössler, Damian (Oxford)
* Sabonis, David (TU München)
* Scarponi, Danny (Oxford)
* Scholbach, Jakob (Münster)
* Sigloch, Helene (Regensburg)
* Smacka, Jascha (Regensburg)
* Sombra, Martin (Barcelona)
* Soulé, Christophe (Bures-sur-Yvette)
* Sprang, Johannes (Regensburg)
* Stoffel, Martino (Regensburg)
* Tamme, Georg (Regensburg)
* Tang, Shun (Peking)
* Viada, Evelina (ETH Zürich)
* Vilsmeier, Christian (Regensburg)
* Wanner, Veronika (Regensburg)
* Wieland, Peter (Regensburg)
* Wilms, Robert (Mainz)
* Yamaki, Kazuhiko (Kyoto)
* Yang, Enlin (Regensburg)
* Zhang, Shouwu (Princeton)
* Zhang, Tong (Durham)
* Zhao, Heer (Duisburg-Essen)
* Zhao, Yigeng (Regensburg)

==Practical information==

* TRAVEL: In order to reach the university kindly follow the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].
* INTERNET: Access to '''eduroam''' is available throughout the mathematics building.

==Contact==

If you are interested to participate or want to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de] 
NOTE: Summer break from July 30th to August 28th, 2016.

SFB school Bordism Ltheory 2016

2022-05-06T14:38:50Z

132.199.243.28: Created page with "__NOTOC__ =Winter School on Bordism, L-theory, and Real Algebraic K-theory= ==Dates and Location== The Winter School will take place at [http://www.kastellwindsor.de Kastel..."

__NOTOC__

=Winter School on Bordism, L-theory, and Real Algebraic K-theory=

==Dates and Location==

The Winter School will take place at [http://www.kastellwindsor.de Kastell Windsor], on the outskirts of Regensburg, during the week '''December 5-9, 2016'''.

==Description==

The aim of this Winter School is to familiarize PhD students and young researchers with recent developments in L-theory and real algebraic
K-theory.

The school will consist of 5 lecture series. There will also be
opportunities for participants to give short presentations.

==Lecture Series==

* [http://www.ruhr-uni-bochum.de/ffm/Lehrstuehle/Lehrstuhl-XIII/laures.html Gerd Laures] (Ruhr-Universität Bochum): [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/laures1.pdf '''Ad Theories''' ] 

* [http://people.mpim-bonn.mpg.de/thoni/ Thomas Nikolaus] (MPIM Bonn): [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/nikolaus.pdf '''Homotopy types of L-theory spectra'''] 

* [https://www2.warwick.ac.uk/fac/sci/maths/people/staff/marco_schlichting/ Marco Schlichting] (University of Warwick): '''Higher Grothendieck-Witt groups''' 

* [https://www.mathematik.uni-osnabrueck.de/forschung/ag_topologie_und_geometrie/spitzweck_markus.html Markus Spitzweck] (Universität Osnabrück): [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/spitzweck1.pdf '''Hermitian K-theory for infinity categories with duality''' ] 

* [https://www.math.uni-augsburg.de/prof/diff/arbeitsgruppe/steimle/ Wolfgang Steimle] (Universität Augsburg): [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/steimle1.pdf '''Fibration sequences in cobordism categories''' ] 

==Financial Support==

Financial support for the conference has been provided by the [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/index.php/Main_Page SFB 1085: Higher Invariants]. This will cover the expenses for accommodation in
Kastell Windsor for the participants of the Winter School. Limited funding for travel financial support is also available.

==Registration==

'''Due to limited room availability in Kastell Windsor, we may not be able to accept all registrations for participation in the Winter School. You will hear a confirmation from us soon after the registration deadline.'''

''Registration is now closed.''

==Schedule==

A detailed schedule will appear soon.

{| align="center" cellpadding="20" cellspacing="0" border="1"
!
!Monday
!Tuesday
!Wednesday
!Thursday
!Friday
|-
| 09:30 - 10:30
|Schlichting
(Lecture 1)
|Schlichting
(Lecture 2)
|Schlichting
(Lecture 3)
|Steimle
(Lecture 1)
|Steimle
(Lecture 2)
|-
| 10:30 - 11:00
| colspan="5"|
|-
| 11:00 - 12:00
|Spitzweck
(Lecture 1)
|Spitzweck
(Lecture 2)
|Laures
(Lecture 2)
|Laures
(Lecture 3)
|Spitzweck
(Lecture 3)
|-
| 12:00 - 14:00
| colspan="4"| Lunch
| END OF SCHOOL
|-
|14:00 - 15:00
|Nikolaus
(Lecture 1)
|Nikolaus
(Lecture 2)
|
|Nikolaus
(Lecture 3)
|
|-
| 15:00 - 15:30
| colspan="2"|
| Excursion
|
|
|-
|15:30 - 16:30
|
(Short Talks)
|Laures
(Lecture 1)
| Excursion
|
(Discussion)
|
|-
| 16:30 - 16:45
| colspan="2"|
| Excursion
|
|
|-
|16:45 - 18:00
|
(Short Talks)
|
(Short Talks)
| Excursion
|
(Discussion)
|}

==Organisers==

* Ulrich Bunke
* Markus Land
* Niko Naumann
* Georgios Raptis

==Registered participants==

* Absmeier Dominik (Bochum)
* Ammann Bernd (Regensburg)
* Bachmann Tom (LMU München)
* Brüggemann Julian (Bochum)
* Caputi Luigi (Regensburg)
* Cohier-Chevaux Cyrus (Jussieu, Paris)
* Dahlhausen Christian (Regensburg)
* Dotto Emanuele (Bonn)
* Engel Alexander (Texas A&M)
* Fiore Thomas (Michigan-Dearborn)
* Frankland Martin (Osnabrück)
* Hebestreit Fabian (Bonn)
* Holz Jan (Bochum)
* Krannich Manuel (Copenhagen)
* Kudryashov Alexei (Augsburg)
* Levikov Filipp (Berlin)
* Lopez-Avila Alejo (Osnabrück)
* Macko Tibor (Bratislava)
* Madden Dylan (Warwick)
* Meisel Moritz-Oliver (Augsburg)
* Moi Kristian Jonsson (Münster)
* Nguyen Kim (Regensburg)
* Nguyen Manh Toan (Osnabrück)
* Noel Justin (Regensburg)
* Ohrt Christopher (UCLA)
* Pavlov Dmitri (Regensburg)
* Perlmutter Nathan (Stanford)
* Reinauer Raphael (Münster)
* Reinhold Jens (Stanford)
* Sadhu Vivek (Mumbai)
* Schlarmann Eric (Augsburg)
* Schrade Christoph (Regensburg)
* Speirs Martin (Copenhagen)
* Wimmer Christian (Bonn)
* van Woerden Koen (Regensburg)
* Zanchetta Ferdinando (Warwick)

Summer school: Gauge theory and applications

2022-05-06T14:38:20Z

132.199.243.28: Created page with "__NOTOC__ =''' Summer school: Gauge Theory and Applications = ==Dates and Location== The summer school takes place at the University of Regensburg from '''July 17th to 20th..."

__NOTOC__

=''' Summer school: Gauge Theory and Applications =

==Dates and Location==

The summer school takes place at the University of Regensburg from '''July 17th to 20th 2018'''.

==Organizers==

The summer school is organized by '''Bernd Ammann''', '''Stefan Friedl''', and '''Raphael Zentner'''. It is followed by a [[Conference:_Gauge_theory_and_applications | conference ]] the week after.

The summer school will focus on gauge theory and its geometric and topological applications, with an emphasis on monopole and instanton gauge theory.

==Speakers==

The preliminary list of speakers who will provide mini-courses is:

* '''Francesco Lin''' (Princeton)
* '''Tomasz Mrowka''' (MIT)
* '''Nikolai Saveliev''' (Miami)
* '''Steven Sivek''' (Imperial College London)

==Titles and Abstracts==

* [[sfb-summer_school_Gauge_theory_and_applications_abstracts|Titles and Abstracts]]

==Schedule==
* [[sfb-summer_school_Gauge_theory_and_applications_schedule|Schedule]]

==Lecture notes and video recordings==
* [[sfb-summer_school_Gauge_theory_and_applications_notes_and_videos|Lecture notes]]

* [https://mediathek.uni-regensburg.de/m/play/playlist/playlist_id/171 Link to Video recordings]

==Registration==

[https://docs.google.com/forms/d/e/1FAIpQLSeGfg9T78S470grd3i_pd10Kxz1QtPCLjL-HMUmoIHoVHNFSA/viewform?usp=sf_link Registration page] If you intend to participate both in the conference and the summer school, it is enough to fill out the registration form for the conference only.

The deadline for application for financial support is April 30th.

==Registered participants==

* Dario Ascari
* Adam Baranowski
* Michael Brandenbursky
* Luigi Caputi
* Carlo Collari
* Anthony Conway
* Laurent Côté
* Irving Dai
* Celeste Damiani
* Felix Eberhart
* Mariano Echeverria
* Daniel Fauser
* Jesse Freeman
* Kristina Gajczcyk
* Paolo Ghiggini
* Sudipta Ghosh
* Marco Golla
* Sherry Gong
* Przemyslaw Grabowski
* Gard Olav Helle
* Christopher Herald
* Henry Horton
* Tirasan Khanadwit
* Hee Jung Kim
* Paul Kirk
* Hokuto Konno
* Adam Król
* McKee Krumpak
* Roberto Ladu
* Kyle Larson
* Youlin Li
* Langte Ma
* Maciej Markiewicz
* Shinichiroh Matsuo
* Matthias Nagel
* Patrick Orson
* Nobuhiko Otoba
* Kyungbae Park
* Gregory Parker
* Tomasz Pelka
* Juanita Pinzón-Caicedo
* Wojciech Politarczyk
* Federico Salmoiraghi
* Julian Seipel
* Oliver Singh
* Piotr Suwara
* Monika Szczepanowska
* Masaki Taniguchi
* Enrico Toffoli
* Boyu Zhang

==Financial Support==

A limited amount of financial support is available, especially to support junior participants.

==Practical Information==

* '''City of Regensburg:''' Regensburg is a Unesco World Heritage site that is famous for its well preserved medieval city center and its beautiful Gothic cathedral. Further information can be found [http://www.regensburg.de/unesco-world-heritage/impressions here].

* '''ACCOMMODATION:''' A block of hotel rooms is reserverd at [http://www.ibis.com/de/hotel-0904-ibis-regensburg-city/index.shtml#overview Hotel IBIS] and [https://starinnhotels.com/en/star-inn-hotel-regensburg-zentrum-by-comfort/rooms/standard-rooms/ Hotel Star Inn] for the participants of the workshop. Participants will need to book and pay for their own accommodation (if they will receive financial support they will be reimbursed later). Please use promotion code '''58893''' (Hotel IBIS) or promotion code '''Universität''' (Hotel Star Inn) when making a reservation. Rooms can be booked until 4th of June 2018 (Hotel IBIS), resp. 16th of June 2018 (Hotel Star Inn). All pre-PhD participants requesting financial support should request a shared room. Regensburg is a tourist destination, so we encourage guests to book their rooms as early as possible.

* '''TRAVEL:''' One can reach the university by following the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

==Contact==

If you wish to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]

Conference: Gauge theory and applications

2022-05-06T14:37:09Z

132.199.243.28:

__NOTOC__

='''Conference: Gauge Theory and Applications =

[[File:regensburg_klein.jpg|20px|link=https://www-cgi.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regensburg_klein.jpg]]
Regensburg as seen from the island "Oberer Wöhrd"

==Dates and Location==

The conference takes place at the University of Regensburg from '''July 23rd to 27th 2018'''.
It is preceded by a [[Summer_school:_Gauge_theory_and_applications| summer school ]] the week before.

==Organizers==

The conference is organized by '''Bernd Ammann''', '''Stefan Friedl''', and '''Raphael Zentner'''.

It will focus on gauge theory and its geometric and topological applications, with an emphasis on instanton and monopole gauge theory, and symplectic geometry.

==Speakers==

The preliminary list of speakers is:

*'''Kim Froyshov''' (Oslo)
*'''Marco Golla''' (Nantes)
*'''Doris Hein''' (Freiburg)
*'''Tsuyoshi Kato''' (Kyoto)
*'''Hokuto Konno''' (Univerisity of Tokyo)
*'''Francesco Lin''' (Princeton)
*'''Jianfeng Lin''' (MIT)
*'''Shinichiroh Matsuo''' (Nagoya)
*'''Catherine Meusburger''' (Erlangen-Nürnberg)
*'''Michael Miller''' (UCLA)
*'''Tomasz Mrowka''' (MIT)
*'''Jacob Rasmussen''' (Cambridge)
*'''Sarah Rasmussen''' (Cambridge)
*'''Daniel Ruberman''' (Brandeis University)
*'''Dietmar Salamon''' (ETH Zürich)
*'''Nikolai Saveliev''' (University of Miami)
*'''Christopher Scaduto''' (Stony Brook)
*'''Steven Sivek''' (Imperial College London)
*'''Matthew Stoffregen''' (MIT)

==Titles and Abstracts==

* [[sfb-Conference_Gauge_theory_and_applications_abstracts|Titles and Abstracts]]

==Schedule==

* [[sfb-Conference_Gauge_theory_and_applications_schedule|Schedule]]

==Video Recordings==

* [https://mediathek.uni-regensburg.de/m/play/playlist/playlist_id/171 Video recordings]

==Registration==

[https://docs.google.com/forms/d/e/1FAIpQLSe8h8144ZAnbRYh0fo4iZFz_14RQdPNyKF7lCcTTnxcTT13Qw/viewform?usp=sf_link Registration page] If you intend to participate both in the conference and the summer school, it is enough to fill out the registration form for the conference only.

The deadline for application for financial support is April 30th.

==Registered participants==

* Adam Baranowski
* Stefan Behrens
* Maciej Borodzik
* Michael Brandenbursky
* Guillem Cazassus
* Carlo Collari
* Laurent Côté
* Irving Dai
* Mariano Echeverria
* Daniel Fauser
* Jesse Freeman
* Krystyna Gajczcyk
* Paolo Ghiggini
* Sudipta Ghosh
* Sherry Gong
* Przemyslaw Grabowski
* Christopher Herald
* Henry Horton
* Tirasan Khandadwit
* Hee Jung Kim
* Paul Kirk
* Adam Król
* McKee Krumpak
* Kyle Larson
* Yi-Jen Lee
* Youlin Li
* Langte Ma
* Maciej Markiewicz
* S. Michael Miller
* Matthias Nagel
* Kyungbae Park
* Tomasz Pelka
* Juanita Pinzón-Caicedo
* Wojciech Politarczyk
* Hirofumi Sasahira
* Piotr Suwara
* Jan Swoboda
* Monika Szczepanowska
* Masaki Taniguchi
* Enrico Toffoli
* Boyu Zhang

==Financial Support==

A limited amount of financial support is available especially to support junior participants.

==Practical Information==

* '''City of Regensburg:''' Regensburg is a Unesco World Heritage site that is famous for its well preserved medieval city center and its beautiful Gothic cathedral. Further information can be found [http://www.regensburg.de/unesco-world-heritage/impressions here].

* '''ACCOMMODATION:''' A block of hotel rooms is reserverd at [http://www.ibis.com/de/hotel-0904-ibis-regensburg-city/index.shtml#overview Hotel IBIS] and [https://starinnhotels.com/en/star-inn-hotel-regensburg-zentrum-by-comfort/rooms/standard-rooms/ Hotel Star Inn] for the participants of the workshop. Participants will need to book and pay for their own accommodation (if they will receive financial support they will be reimbursed later). Please use promotion code '''58893''' (Hotel IBIS) or promotion code '''Universität''' (Hotel Star Inn) when making a reservation. Rooms can be booked until 4th of June 2018 (Hotel IBIS), resp. 16th of June 2018 (Hotel Star Inn). All pre-PhD participants requesting financial support should request a shared room. Regensburg is a tourist destination, so we encourage guests to book their rooms as early as possible.

* '''TRAVEL:''' One can reach the university by following the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

==Contact==

If you wish to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]

Conference: Gauge theory and applications

2022-05-06T14:34:09Z

132.199.243.28: Created page with "__NOTOC__ ='''Conference: Gauge Theory and Applications = <img src="http://www-cgi.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regensburg_klein.jpg" align..."

__NOTOC__

='''Conference: Gauge Theory and Applications =

<img src="http://www-cgi.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regensburg_klein.jpg" align="middle" style="width:50%;height:50%;">
Regensburg as seen from the island "Oberer Wöhrd"

==Dates and Location==

The conference takes place at the University of Regensburg from '''July 23rd to 27th 2018'''.
It is preceded by a [[Summer_school:_Gauge_theory_and_applications| summer school ]] the week before.

==Organizers==

The conference is organized by '''Bernd Ammann''', '''Stefan Friedl''', and '''Raphael Zentner'''.

It will focus on gauge theory and its geometric and topological applications, with an emphasis on instanton and monopole gauge theory, and symplectic geometry.

==Speakers==

The preliminary list of speakers is:

*'''Kim Froyshov''' (Oslo)
*'''Marco Golla''' (Nantes)
*'''Doris Hein''' (Freiburg)
*'''Tsuyoshi Kato''' (Kyoto)
*'''Hokuto Konno''' (Univerisity of Tokyo)
*'''Francesco Lin''' (Princeton)
*'''Jianfeng Lin''' (MIT)
*'''Shinichiroh Matsuo''' (Nagoya)
*'''Catherine Meusburger''' (Erlangen-Nürnberg)
*'''Michael Miller''' (UCLA)
*'''Tomasz Mrowka''' (MIT)
*'''Jacob Rasmussen''' (Cambridge)
*'''Sarah Rasmussen''' (Cambridge)
*'''Daniel Ruberman''' (Brandeis University)
*'''Dietmar Salamon''' (ETH Zürich)
*'''Nikolai Saveliev''' (University of Miami)
*'''Christopher Scaduto''' (Stony Brook)
*'''Steven Sivek''' (Imperial College London)
*'''Matthew Stoffregen''' (MIT)

==Titles and Abstracts==

* [[sfb-Conference_Gauge_theory_and_applications_abstracts|Titles and Abstracts]]

==Schedule==

* [[sfb-Conference_Gauge_theory_and_applications_schedule|Schedule]]

==Video Recordings==

* [https://mediathek.uni-regensburg.de/m/play/playlist/playlist_id/171 Video recordings]

==Registration==

[https://docs.google.com/forms/d/e/1FAIpQLSe8h8144ZAnbRYh0fo4iZFz_14RQdPNyKF7lCcTTnxcTT13Qw/viewform?usp=sf_link Registration page] If you intend to participate both in the conference and the summer school, it is enough to fill out the registration form for the conference only.

The deadline for application for financial support is April 30th.

==Registered participants==

* Adam Baranowski
* Stefan Behrens
* Maciej Borodzik
* Michael Brandenbursky
* Guillem Cazassus
* Carlo Collari
* Laurent Côté
* Irving Dai
* Mariano Echeverria
* Daniel Fauser
* Jesse Freeman
* Krystyna Gajczcyk
* Paolo Ghiggini
* Sudipta Ghosh
* Sherry Gong
* Przemyslaw Grabowski
* Christopher Herald
* Henry Horton
* Tirasan Khandadwit
* Hee Jung Kim
* Paul Kirk
* Adam Król
* McKee Krumpak
* Kyle Larson
* Yi-Jen Lee
* Youlin Li
* Langte Ma
* Maciej Markiewicz
* S. Michael Miller
* Matthias Nagel
* Kyungbae Park
* Tomasz Pelka
* Juanita Pinzón-Caicedo
* Wojciech Politarczyk
* Hirofumi Sasahira
* Piotr Suwara
* Jan Swoboda
* Monika Szczepanowska
* Masaki Taniguchi
* Enrico Toffoli
* Boyu Zhang

==Financial Support==

A limited amount of financial support is available especially to support junior participants.

==Practical Information==

* '''City of Regensburg:''' Regensburg is a Unesco World Heritage site that is famous for its well preserved medieval city center and its beautiful Gothic cathedral. Further information can be found [http://www.regensburg.de/unesco-world-heritage/impressions here].

* '''ACCOMMODATION:''' A block of hotel rooms is reserverd at [http://www.ibis.com/de/hotel-0904-ibis-regensburg-city/index.shtml#overview Hotel IBIS] and [https://starinnhotels.com/en/star-inn-hotel-regensburg-zentrum-by-comfort/rooms/standard-rooms/ Hotel Star Inn] for the participants of the workshop. Participants will need to book and pay for their own accommodation (if they will receive financial support they will be reimbursed later). Please use promotion code '''58893''' (Hotel IBIS) or promotion code '''Universität''' (Hotel Star Inn) when making a reservation. Rooms can be booked until 4th of June 2018 (Hotel IBIS), resp. 16th of June 2018 (Hotel Star Inn). All pre-PhD participants requesting financial support should request a shared room. Regensburg is a tourist destination, so we encourage guests to book their rooms as early as possible.

* '''TRAVEL:''' One can reach the university by following the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

==Contact==

If you wish to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]

Seminar on Determination, K-Theory and Epsilon-Factor

2022-05-06T14:33:43Z

132.199.243.28: Created page with "__NOTOC__ ==Seminar on determinant, K-theory and epsilon factor== The goal of this 2-day semester is to study the de Rham epsilon factor. ==Dates and location== 9. August-..."

__NOTOC__

==Seminar on determinant, K-theory and epsilon factor==

The goal of this 2-day semester is to study the de Rham epsilon factor.

==Dates and location==

9. August-10. August 2018, M311

==Program==
Here you may find the extended [ program].

==Talks==

<table>
<tr>
<td> </td>
<td>Date</td>
<td>Time</td>
<td>Title</td>
<td>Speaker</td>
</tr>

<tr>
<td>1.</td>
<td>09.8</td>
<td>10.00-11.30</td>
<td>Infinity category of spectra and K-theory</td>
<td>Fangzhou Jin</td>
</tr>

<tr>
<td>2.</td>
<td>09.8</td>
<td>13.15-14.45</td>
<td>K-theory spectrum and determinant functor</td>
<td>Georg Tamme</td>
</tr>

<tr>
<td>3.</td>
<td>09.8 </td>
<td>15.15-16.45</td>
<td>Microlocal analysis of D-modules</td>
<td>Johannes Sprang</td>
</tr>
<tr>

<td>4.</td>
<td>10.8</td>
<td>10.00-11.30</td>
<td>De Rham epsilon factors</td>
<td>Enlin Yang</td>
</tr>

</table>

Special Metrics and Symmetries on Complex Manifolds

2022-05-06T14:33:19Z

132.199.243.28: Created page with "__NOTOC__ =Workshop: Special Metrics and Symmetries on Complex Manifolds= ==Dates and Location== * The workshop will take place on '''September 11-14, 2018''' at the [ht..."

__NOTOC__

=Workshop: Special Metrics and Symmetries on Complex Manifolds=

==Dates and Location==

* The workshop will take place on '''September 11-14, 2018''' at the [http://www.uni-r.de University of Regensburg] in the seminar room M 104.
* Please note that in the week after this workshop, the [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/index.php/Analytical_problems_in_conformal_geometry_and_applications Conference: Analytical problems in conformal geometry and applications] takes place at the same location.

==Aims and Scope==

The aim of this workshop is to introduce recent advances in differential geometry, in particular about special geometric structures on complex manifolds, to encourage young researchers to present their work and to provide a stimulating environment for discussions as a basis for further possible collaborations. The activity will consist of invited lectures.

==Invited Speakers==

* Ilka Agricola (Marburg)
* Daniele Angella (Florence)
* Giovanni Bazzoni (Madrid)
* Liana David (Bucharest)
* Viviana del Barco (Paris)
* Nicolina Istrati (Paris)
* Ines Kath (Greifswald)
* Marie-Amelie Lawn (London)
* Eveline Legendre (Toulouse)
* Andrei Moroianu (Paris)
* Liviu Ornea (Bucharest)
* Massimiliano Pontecorvo (Rome)
* Miron Stanciu (Bucharest)
* Andrew Swann (Aarhus)
* Nicoletta Tardini (Florence)
* Michela Zedda (Parma)

==Schedule==

The schedule of the workhop can be found [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/schedule-tabel-workshop-2018.pdf here]

The registration will take place on Tuesday from 9:00 to 9:30 am in the seminar room M 102 and the first talk will start afterwards at 9:30 am in M 104.

The workshop will end on Friday at 12:30 pm.

An excursion is planed for Thursday afternoon starting at 2 pm and ending with the social dinner at 7:30 pm.

==Slides of Several Talks==

Here you can access the slides of the followings talks:

* Ilka Agricola: [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regensburg-2018-agricola.pdf Generalizations of 3-Sasakian manifolds and skew torsion]
* Giovanni Bazzoni: [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regensburg-2018-bazzoni.pdf Complex symplectic structures]
* Marie-Amelie Lawn: [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regensburg-2018-lawn.pdf Submanifolds and spinors]
* Miron Stanciu: [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regenburg-2018-stanciu.pdf Locally conformally symplectic reduction]
* Andrew Swann: [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/regensburg-2018-swann.pdf Multi-Moment Maps for Special Ricci-flat Metrics]

==Conference Images==
[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/img_0316.pdf Photo 1], [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/img_0317.pdf Photo 2]

==Participants==

The list of participants can be found [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/participants-workshop-september-2018-final.pdf here]

==Organisers==

* [https://sites.google.com/site/alexandraotiman/ Alexandra Otiman (MPI Bonn)]
* [http://www.mathematik.uni-regensburg.de/pilca/ Mihaela Pilca (Universität Regensburg)]

==Registration==
You are invited to register [https://docs.google.com/forms/d/e/1FAIpQLSfjgTkWK7QndHb_eFu7bK6dgjAfFYZGeSAaa4MniRYq1Jm9rQ/viewform?usp=sf_link here]. The deadline for registration is August 15, 2018.

If you ask for financial support, please register until May 31, 2018. The decision about the financial support will be taken shortly afterwards and all applicants will be informed about it until June 15, 2018.

==Practical Information==

* City of Regensburg: Regensburg is a Unesco World Heritage site that is famous for its well preserved medieval city center and its beautiful Gothic cathedral. Further information can be found [http://www.regensburg.de/unesco-world-heritage/impressions here].

[http://www.uni-regensburg.de/impressum/medien/campus-english.pdf University Map].

ACCOMMODATION: A block of hotel rooms is reserverd at the [http://www.ibis.com/de/hotel-0904-ibis-regensburg-city/index.shtml#overview Hotel IBIS] for the participants of the workshop. Participants will need to book and pay for their own accommodation (promotion booking number '''58.955''' until 10th of August 2018). All pre-PhD participants requesting financial support should request a shared room.

Regensburg is a tourist destination, so we encourage guests to book their rooms as early as possible.

TRAVEL: One can reach the university by following the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

==Contact==

If you wish to contact the organizers, please send an email to [mailto:sfb-higher-invariants@mathematik.uni-regensburg.de sfb-higher-invariants@mathematik.uni-regensburg.de]. From July 27 to September 2, 2018 please contact [mailto:mihaela.pilca@mathematik.uni-regensburg.de mihaela.pilca@mathematik.uni-regensburg.de]

Analytical problems in conformal geometry and applications

2022-05-06T14:32:58Z

132.199.243.28: Created page with "__NOTOC__ =Conference: Analytical problems in conformal geometry and applications= ==Dates and Location== * The conference will take place during the week '''September 17..."

__NOTOC__

=Conference: Analytical problems in conformal geometry and applications=

==Dates and Location==

* The conference will take place during the week '''September 17-21, 2018''' at the [http://www.uni-r.de University of Regensburg]
* Download the [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/sfb_confgeo2018_verapr30.pdf poster]!
* Please note that in the week before this workshop, the [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/index.php/Special_Metrics_and_Symmetries_on_Complex_Manifolds Workshop: Special Metrics and Symmetries on Complex Manifolds] takes place at the same location. Talks will be held in H 31, registration and coffee breaks in M 102.

[http://www.uni-regensburg.de/impressum/medien/campus.pdf Campus map]

==Aims and Scope==

The main subject of the conference is the analysis of conformally invariant partial differential equations such as the Yamabe equation, and related fields in general relativity and geometry, such as Einstein manifolds, positive mass theorem, initial data sets in general relativity or more generally Lorentzian geometry.

==Confirmed Speakers==

* Bettiol, Renato G.
* Botvinnik, Boris
* Carron, Gilles
* Dahl, Mattias
* de Lima, Levi Lopes
* Futaki, Akito
* Große, Nadine
* Gursky, Matthew J.
* Hein, Hans-Joachim (canceled)
* Herzlich, Marc
* Humbert, Emmanuel
* Kazaras, Demetre
* Kröncke, Klaus
* Lohkamp, Joachim
* Matsumoto, Yoshihiko
* Mondello, Ilaria
* Petean, Jimmy
* Piccione, Paolo (canceled)
* Ruiz, Juan Miguel
* Santoro, Bianca (canceled)
* Tadano, Homare
* Xu, Tian

[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/conformalgeometryabstracts.pdf Abstracts of the talks]
==Organizers==

* Kazuo Akutagawa, Chuo University and Tokyo Tech (Professor Emeritus), Tokyo
* [http://www.mathematik.uni-regensburg.de/ammann/ Bernd Ammann]
* [http://www.mathematik.uni-r.de/loeh Clara Löh]
* [http://homepages.uni-regensburg.de/~otn30980 Nobuhiko Otoba]

==Schedule==

The schedule of the conference can be found [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/schedule-2.pdf here]

The registration will take place on Monday from 9:00 to 9:30 am in the seminar room M 102 and the first talk will start afterwards at 9:30 am in lecture hall H 31.

The workshop will end on Friday at 12:00 pm.

An excursion is planed for Wednesday afternoon starting at 12:30 pm.

==Conference Images==
[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/img_0318.pdf Photo 1], [http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/img_0319.pdf Photo 2]

==Registration==
We kindly ask interested participants to register [https://goo.gl/forms/wlr9HI1C2LwjuFQl2 here].
We will encourage registered PhD students and postdocs to present a poster. For this, you need not bring your poster by yourself; we will print it after receiving the pdf file.

==Practical Information==

* '''City of Regensburg:''' Regensburg is a Unesco World Heritage site that is famous for its well preserved medieval city center and its beautiful Gothic cathedral. Further information can be found [http://www.regensburg.de/unesco-world-heritage/impressions here].

* '''ACCOMMODATION:''' A block of hotel rooms is reserverd at [http://www.ibis.com/de/hotel-0904-ibis-regensburg-city/index.shtml#overview Hotel IBIS] and [https://starinnhotels.com/en/star-inn-hotel-regensburg-zentrum-by-comfort/rooms/standard-rooms/ Hotel Star Inn] for the participants of the workshop. Participants will need to book and pay for their own accommodation. Please use promotion code '''58.956''' (Hotel IBIS) or promotion code '''Uni''' (Hotel Star Inn) when making a reservation. Rooms can be booked until 17th of August 2018. All pre-PhD participants requesting financial support should request a shared room. Regensburg is a tourist destination, so we encourage guests to book their rooms as early as possible.

* '''TRAVEL:''' One can reach the university by following the instructions [http://www.uni-regensburg.de/contact/directions/index.html here].

Ph.D. students' mini-course on Stable Homotopy Theory

2022-05-06T14:32:12Z

132.199.243.28: Created page with "__NOTOC__ =Mini-Course: Stable Homotopy Theory= ==Dates and Location== This workshop will take place during '''April 1--5, 2019''' (Monday--Friday, in the afternoons) in th..."

__NOTOC__

=Mini-Course: Stable Homotopy Theory=

==Dates and Location==

This workshop will take place during '''April 1--5, 2019''' (Monday--Friday, in the afternoons) in the SFB seminar room M311.

==Aims and Scope==

In this mini-course we will learn about stable homotopy theory and spectra beginning at the very basics. Roughly the first part (approx. 5 lectures) will cover the classical theory and will only require a moderate knowledge of classical Algebraic Topology. The second half aims towards more modern approaches. For this we try to keep the prerequisites as low as possible and we will try to provide extra exercise classes if needed.

The philosophy is to construct an informal atmosphere with ample opportunities to ask
questions and discuss the course contents, both during the lectures and
beyond.

This mini-course is aimed towards Ph.D. students but Postdocs and Master students are welcome too!

The first official motto of our course should be: There are no stupid questions. Let's all acknowledge from the start that most of us are no experts. We're here to learn, and that we'll embrace questions, including simple and basic ones.

==Schedule==
(tentative)
[http://www-app.uni-regensburg.de/Fakultaeten/MAT/sfb-higher-invariants/images/phdstudentsmini-course-2.pdf program]
==Organizers==

If you have questions please contact Marta Barigozzi, Kévin Francois or Benedikt Preis.

Workshop volume2019

2022-05-06T14:31:45Z

132.199.243.28: Created page with "__NOTOC__ =Workshop: Riemannian and Simplicial Volume= ==Dates and Location== * This workshop will take place during '''April 8--11, 2019''' (Monday--Thursday) at the [htt..."

__NOTOC__

=Workshop: Riemannian and Simplicial Volume=

==Dates and Location==

* This workshop will take place during '''April 8--11, 2019''' (Monday--Thursday) at the [https://www.kit.edu KIT (Karlsruhe)]
* This workshop is co-hosted with the [https://www.groups-and-spaces.kit.edu/ RTG 2229 Asymptotic Invariants and Limits of Groups and Spaces](Karlsruhe)

==Aims and Scope==

The aim of this workshop is to bring together researchers and students
interested in the interaction between Riemannian and simplicial volume
and related invariants.

Poster: [https://www.uni-r.de/Fakultaeten/nat_Fak_I/loeh/sfb-higher-invariants/Riemannian_and_simplicial_volume_2019.pdf (pdf)]

==Confirmed Speakers==

* Hannah Alpert
* Grigori Avramidi
* Florent Balacheff
* Chris Connell
* James Farre
* Daniel Fauser
* Roberto Frigerio
* Tobias Hartnick
* Alessandra Iozzi
* Jean-François Lafont
* Fedor Manin
* Marco Moraschini
* Christoforos Neofytidis
* Beatrice Pozzetti
* Shi Wang

==Organizers==

* [http://topology.math.kit.edu/21_594.php Caterina Campagnolo] (RTG 2229)
* [http://www.mathematik.uni-r.de/loeh Clara Löh] (SFB 1085)
* [https://topology.math.kit.edu/english/21_53.php Roman Sauer] (RTG 2229)

==Financial Support==

This workshop is jointly funded by the [https://www.groups-and-spaces.kit.edu/ RTG 2229 Asymptotic Invariants and Limits of Groups and Spaces](Karlsruhe) and the [https://www.sfb-higher-invariants.de SFB 1085 Higher Invariants] (Regensburg).

We have a limited amount of funding for travel and accommodation costs. Please
specify if you want to apply for funding during the online registration.

The deadline for application for financial support is March 10, 2019.

==Registration==

Registration is now open. Please register via [https://indico.scc.kit.edu/event/500/registrations/193/ this form] (before March 10). Please note that some of the allocated hotel rooms expire by February 15.

==Schedule==

* Schedule: [https://www.uni-r.de/Fakultaeten/nat_Fak_I/loeh/sfb-higher-invariants/programmeRiemannSimplicial.pdf (pdf)]
* Abstracts: [https://www.uni-r.de/Fakultaeten/nat_Fak_I/loeh/sfb-higher-invariants/rsv2019_abstracts.pdf (pdf)]
* Location of the talks and registration: Architektur (20.40) [http://www.kit.edu/campusplan/index.php?id=20.40 map]
* Location of the coffee breaks: Mathebau (20.30) [http://www.kit.edu/campusplan/index.php?id=20.30 map]
* Location of the mensa: [http://www.kit.edu/campusplan/index.php?id=mensa map]

==Practical Information==

We allocated some hotel rooms for conference participants; further information on hotels can be found in the confirmation email after the registration. Please note that some of the allocated hotel rooms expire by February 15.

* [https://www.leonardo-hotels.de/leonardo-hotel-karlsruhe Hotel Leonardo]
* [https://achat-hotels.com/de/hotel/karlsruhe-city ACHAT Plaza]
* [https://www.schlosshotelkarlsruhe.de/ Schlosshotel]
* [https://www.ihg.com/holidayinnexpress/hotels/us/en/karlsruhe/fkbcp/hoteldetail Holiday Inn Express Karlsruhe]

A random list of restaurants: [https://www.google.com/maps/d/viewer?mid=1Ez_Q1aLO1d-M3c08txy2OKlCRF4&msa=0&hl=en&ie=UTF8&ll=49.01031013091121%2C8.400830000000042&spn=0.007221%2C0.032524&t=m&source=embed&z=14 map]