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Dinner form! (November 19)

Next week, on Tuesday the 19th of November, Lukas is going to introduce the pro-étale topology to us! Let us know what you would like to have for dinner (by Tuesday at noon), we are having pizza at Unikat: https://forms.gle/9RUYdcYJmZX9jBah9 😊

PhD Seminar (Winter Semester 2024-25)

Philosophy

We want to maintain the atmosphere we had last semester, based on the following.

• We want to encourage participation from diverse research groups, inviting speakers to choose topics they are experts in or passionate about.
• We want speakers to be able to choose what they want to present. Talks can range from introductory presentations to applications, or overviews.
• We want the audience to be always fully able to engage. Unlike traditional seminars where talks are interconnected, our format allows each presentation to stand independently, meaning that even if you miss a talk, you can still fully engage with and understand the following ones.

Theme

Unlike the last semester we will not restrict to a single topic. Instead we will give freedom to the speaker to choose what they want to talk based on their interests. In order to facilitate the choice of argument, here are some possible suggestions/leit motives that can be of interest:

• Why is the naive approach wrong?
• A surprising application of [insert here e.g. condensed maths]
• A result that I always wanted to understand the proof of
• Duality results

General Information

• Talks should last around 45-60 minutes, leaving ample time for discussions and elucidations at the board, and aim to be a gentle introduction to the topic.
• This gathering is also the perfect opportunity to ask questions non-directly related to mathematics, such as suggestions for conferences, how to get access to resources offered by the university, how to get a decent sleep schedule, etc.
• We invite you to join us for dinner right after the talk, where we can continue our discussions. If you would like to participate, you have two options: you can either bring your own food, or you can eat together with us (at a small cost) some food that will be delivered to the department (e.g., pizza).

We're thrilled about this seminar and the opportunity to share ideas and time ✨

Time and place

Tuesday at 18:15, in room M311 (SFB lecture hall). We want all of you to take part also in the events of WiM (https://wimregensburg.app.uni-regensburg.de/standard_index.html). Therefore we decided to not have a talk in the weeks when WiM organise something.

Talks

Date	Speaker	Topic
22 October	Jeroen	Philosophy of mathematics
29 October	---	No talk: there is a WiM event on the 30th, you should attend it :)
05 November	---	What is session: What is a Chern class - Timon
12 November	Max	Misconceptions about the sheaf of meromorphic functions
19 November	Lukas	pro-étale topology
26 November	---	No talk: there is a WiM event on the 28th, you should attend it :)
03 December	---	TBA
10 December	---	TBA
17 December	---	TBA
07 January	---	TBA
14 January	---	TBA
21 January	---	TBA
28 January	---	TBA
04 Febraury	---	TBA

What is?

Here we will collect questions suited for a What is session. If you would like to add any questions to this list, or if you want to answer any of these questions, let us know in this poll (or in person): https://forms.gle/Jv49UiKZ3kptnvUs6 😇

	What is ...
a spin manifold?	a D-module?	consciousness?
a stable ∞-category?	an elliptic curve?	a (∞-)Stack?
a derived category?	étale cohomology?	a simplicial object?
Gromov-Witten invariants?	a Chern class?	a reciprocity law?
non-abelian cohomology?	parallel transport?	a derived functor?
the inertia group?	the Bech-Chevalley condition?	a homotopy fixed point?
a presheaf with transfer?	monodromy?	a Tate twist?
Add your question here!

Organizers

Andrea, Debam and Zhenghang.