GRK-Seminar Sommersem. 2024
RTG Seminar Summer term 2024
The Thursday morning seminar (10:15-11:45 in WSC-N-U-3.05) will be the “Research Training Group Seminar” where members of the RTG (PhD students, post-docs,…) present their results. Sometimes, we also have speakers from other places. Depending on the number of speakers and on the proposed topic, a speaker could use one or two sessions.
| 11.4.2024 | Julian Quast | On local Galois deformation rings |
| 18.4.2024 | Yitong Wang (Orsay) | Multivariable $(\phi,\Gamma)$-modules and local-global compatibility |
| 25.4.2024 | Sebastian Bartling | Moduli spaces of nilpotent displays |
| 2.5.2024 | Ludvig Modin | Graded unipotent quotients over a base scheme |
| 16.5.2024 | – | no talk |
| 23.5.2024 | Laurent Berger (ENS Lyon) | Bounded functions on the character variety |
| 6.6.2024 | RTG applicants | Public talks |
| 13.6.2024 | Guillermo Gamarra | tba |
| 20.6.2024 | Lukas Bröring | tba |
| 27.6.2024 | – | Symposium Düsseldorf/Essen/Wuppertal |
| 4.7.2024 | ALGANT Master Students | Thesis Rehearsal |
| 11.7.2024 | Federica Santi | tba |
| 18.7.2024 | – | Program discussion: Research seminar Winter 24/25 |
Abstracts
Ludvig Modin: Graded unipotent quotients over a base scheme
We present a new proof of the existence of projective geometric quotients for actions of a graded unipotent group acting on a projective scheme for actions that do not have unipotent stabilizers on the attracting locus. The proof works over a base scheme and without assuming the action is linear, generalizing from the original theorem which works for linear actions on complex projective varieties. If time permits we will explain a generalization of this result to Harder-Narasimhan type strata of algebraic stacks, and how one can relax the unipotent stabilizer assumption.
Laurent Berger: Bounded functions on the character variety
The character variety $X$ is a rigid analytic curve defined by Schneider and Teitelbaum, in their work on $p$-adic Fourier theory. Here is a natural question about it: what is the ring of bounded functions on $X$? This question seems to be more difficult than it appears at first sight. I will discuss it, as well as some related problems and results.