Algebra and Geometry
Seminar

SWAG: Südwestdeutsche Algebraische Geometrie:
Our next "SWAG" takes place on 08.12.2023 in Tübingen!
Eberhard Karls Universität Tübingen, Fachbereich Mathematik, Auf der Morgenstelle 10

Speaker:
14:00-14:45: Kletus Stern (Universität Ulm)
Title: „Stability of hypersurfaces, buildings and Berkovich spaces“

15:15-16:00. Luca Remke (Universität Stuttgart)
Title: „Immaculate loci and exceptional sequences for toric varieties“

16:15-17:00: Victoria Schleis (Universität Tübingen)
Title: „Tropical quiver Grassmannians“

The next "Seminar 42" takes place in room 7.530.

TüS\S Seminar in Stuttgart:
Our next Tübingen-Stuttgart-Seminar takes place on 30.06.2023 in Stuttgart!
University of Stuttgart, Pfaffenwaldring 57, Department of Mathematics, room: 8.122

Speaker:
13:15-14:15: Prof. Dr. Irene Bouw, University Ulm
Title: „Reduction of curves and Galois representations“
Abstact: In this talk we discuss arithmetic aspects of curves defined over the rational numbers. We focus on superelliptic curves, which may be described by an algebraic equation of the form y^m=f(x), where f(x) is a
polynomial. We explain how reduction to positive characteristic can be used to determine the (local) Galois representation of a curve.

14:45-15:45: Prof. Dr. Stefan Wewers, University Ulm
Title: „An analytic approach to the computation of semistable reduction of curves“
Abstract: Let Y be a smooth projective curve over p-adic number field K. The semistable reduction theorem says that there exists a finite extension L/K and a semistable model of Y over the ring of integers of L. In my talk I will discuss methods for explicitly computing such a model. These method have a very convenient formulation in the language of analytic geometry a la Berkovich.

16:15-17:15: Prof. Dr. Jeroen Sijsling, University Ulm
Title: „Determining endomorphism rings of Jacobians“
Abstract: Given an algebraic curve, we can construct its Jacobian. This is both an algebraic and an analytic object. We discuss how these different ways of considering the Jacobian allow us to algorithmically determine an important invariant associated to it, namely its endomorphism ring, and we briefly discuss the applications of these algorithms, for example in the context of modularity. This uses joint work with Edgar Costa, Nicolas Mascot, and John Voight.

The next "Seminar 42" takes place in room 7.342.

M.Sc. seminar
Alexander Lang speaks on: "Canonical structural costants in simple Lie algebras"
room 7.530

M.Sc. seminar
Tobias Nerz speaks on: "Neural Networks and Quiver Varieties"
room 7.530

M.Sc. seminar
Christane Ott speaks about: "Algorithms for Chevalley's Theorem"
room 7.530