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Combined display of all available logs of SFB1085 - Higher Invariants. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 08:59, 22 January 2026 Wic42659 talk contribs created page K-theoretic Poitou-Tate duality & the heart of D^b of locally compact abelian groups (Created page with "(joint with Fei Ren, Wuppertal University) Number theory part: I will give a little introduction to K-theoretic Artin maps à la Clausen and K-theoretic Poitou-Tate duality à la Blumberg-Mandell. That's a somewhat new viewpoint on class field theory. Topology part: LCA groups show up as a surprising model for the compactly supported side of said duality, leading to Clausen's cool way to uniformly describe the non-Galois side of class field theory as K_1(LCA_F) for F t...")
• 14:24, 16 January 2026 Ghd08439 talk contribs created page A generalisation of Day convolution for operad-like structures (Created page with "A fundamental construction in higher algebra is that of Day convolution. This construction, if it exists, defines an internal hom-object in the ∞-category of ∞-operads. In this talk, I will describe an explicit condition for the existence of such internal hom-objects for other operad-like structures. Even in the case of ∞-operads, our proof is very different from previous constructions. The existence condition we obtain is very similar to the Conduché criterion fo...")
• 14:22, 16 January 2026 Ghd08439 talk contribs created page A generalisation of Day convolution for Operad-like structures (Created page with "A fundamental construction in higher algebra is that of Day convolution. This construction, if it exists, defines an internal hom-object in the oo-category of oo-operads. In this talk, I will describe an explicit condition for the existence of such internal hom-objects for other operad-like structures. Even in the case of oo-operads, our proof is very different from previous constructions. The existence condition we obtain is very similar to the Conduché criterion for d...")
• 13:42, 13 January 2026 Vom41941 talk contribs created page Semifree isovariant Poincaré spaces and the gap condition (Created page with "The study of group actions on manifolds is a classical problem in geometric topology. In this talk, I will introduce the notion of isovariant G-Poincaré spaces, a homotopical notion interpolating between closed smooth G-manifolds and G-Poincaré spaces. The main result shows that, for a periodic finite group G and under suitable codimension hypothesis, the space of isovariant structures on a G-Poincaré space is highly connected. This is a useful tool for constructing m...")
• 13:41, 13 January 2026 Vom41941 talk contribs created page Talk:AG-Seminar WS2021/22: (Created page with "The study of group actions on manifolds is a classical problem in geometric topology. In this talk, I will introduce the notion of isovariant G-Poincaré spaces, a homotopical notion interpolating between closed smooth G-manifolds and G-Poincaré spaces. The main result shows that, for a periodic finite group G and under suitable codimension hypothesis, the space of isovariant structures on a G-Poincaré space is highly connected. This is a useful tool for constructing m...")
• 11:45, 16 December 2025 Wic42659 talk contribs created page Grothendieck-Witt theory of pushouts (Created page with "Given a Poincaré-duality space X much information can be gathered from its GW-theory. As GW-theory is generally hard to compute, one important question is how GW-theory behaves under gluing of spaces. In this talk I will present a criterion which guarantees a splitting of the GW-theory of a pushout in a part fitting in a Mayer-Vietoris sequence and an error term. The criterion applies more generally for localising invariants and allows generalizations of splitting theor...")
• 12:45, 22 November 2025 Cid36224 talk contribs created page The cobordism spectrum of Poincare spaces (Created page with "Abstract: Based on joint work-in-progress with Bianchi, Kirstein, and Kremer, I will introduce a proposed notion of categorical symmetric spectra as well as an enlargement of the category of Poincare categories which we call that of bundled categories. As applications, we construct the commutative ring cobordism spectrum of Poincare spaces equipped with Pontryagin-Thom maps, and give a new proof that K-theory is lax symmetric monoidal. Time permitting, I will also discus...")