Seminar Algebra und

Oberseminar des IDSR

17.01.2023, 16:30 Uhr

Vortragender: Prof. Maxim Smirnov, Uni Augsburg

Titel: Introduction to quantum cohomology

18.01.2023, 10:00 Uhr

Vortragender: Prof. Maxim Smirnov, Uni Augsburg

Titel: Introduction to quantum cohomology

01.12.2022, 14:00 - 16:30 Uhr

TüSS Seminar in Tübingen:
am 1. Dezember findet wieder unser Tübingen-Stuttgart-Seminar (TüSS) statt -- vor Ort(!) in Tübingen:
Eberhard Karls Universität Tübingen, Fachbereich Mathematik, Auf der Morgenstelle 10, Saal: C4H33

14:00 - 15:00 Uhr
Vortragender: Jonas Hetz, Uni Stuttgart

Titel: On the character tables of finitie groups of „­lie type

Abstract: An important task in the representation theory of finite groups is the determination of their character tables. As the classification of finite simple groups shows, the main difficulties in this context concern the finite groups of Lie type, which arise as an infinite series of finite groups associated to a certain algebraic group over a field of positive characteristic. In order to generically tackle the problem of determining the character tables of finite groups of Lie type, Lusztig developed the theory of character sheaves in the 1980s. In this framework, due to the work of Lusztig and Shoji, the problem is in principle reduced to determining certain roots of unity. We report on some recent progress in this area.

15:30 - 16:30
Vortragende: Matilde Manzaroli, Uni Tübingen

Titel: Betti numbers of real semi-stable degenerations via real logarithmic geometry

Abstract: In a work in progess with Eminiano Ambrosi, we study the real topology of totally real semistable degenerations, with certain technical conditions on the special fiber X0, and we give a bound for the individual real Betti numbers of a smooth fiber near 0 in terms of the complex geometry of X0. The main ingredient is the use of real logarithmic geometry, which allows to work with degenerations which are not necessarily toric and hence to go beyond the case of tropically smooth degenerations. This, in particular, generalises previous work of Renaudineau-Shaw, obtained via tropical techniques, to a more general setting.

16.11.2022, 15:45-17:15 Uhr

Seminar 42
im Raum 7.122

09.11.2022, 13:30-14:00 Uhr

Masterandenseminar: Masterpräsentation von Kathrin Hertäg
Titel: “Critical Brain Hypothesis from a Mathematical Point of View” im Raum 7.530

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