Kommende Vorträge

Ausführliche Liste aller demnächst stattfindenden Vorträge und Seminare. Für eine Übersicht konsultieren Sie bitte auch den Kalender [2].

Recent developments in Quantum Topology -- Cancelled -- [3]

Posted in

Vortrag [4]

We will review the basics of quantum topology such as the colored Jones polynomial of a knot, its standard conjectures relating to asymptotics, arithmeticity and modularity, as well as the recent quantum hyperbolic invariants of Kashaev et al, their state-integrals and their structural properties. The course is aimed to be accessible by graduate students and young researchers.

IMPRS seminar on various topics: single talk [5]

Posted in

Vortrag [4]

Datum:

Die, 16/04/2024 - 10:00 - Die, 06/08/2024 - 11:30

Location:

MPIM Lecture Hall [6]

Details:

Program [7] and Abstracts [8] of IMPRS seminar on various topics: single talk

Some recent advances on the $p$-adic Hodge theory of integral models of Shimura varieties [9]

Posted in

Vortrag [4]

Speaker:

Alex Youcis

Zugehörigkeit:

National University of Singapore

Datum:

Fre, 19/04/2024 - 14:05 - 16:00

Location:

MPIM Lecture Hall [6]

Parent event:

Oberseminar Arithmetische Geometrie und Darstellungstheorie [10]

The geometry of Shimura varieties has played a central role in the development of, and progress in, the Langlands program. Complicating the study of these objects is the lack of moduli interpretations of general Shimura varieties which ought to involve the theory of motives -- a theory that remains largely conjectural.

Weiterlesen [9]

Group rings and hyperbolic geometry [11]

Posted in

Vortrag [4]

Speaker:

Grigori Avramidi

Zugehörigkeit:

MPIM

Datum:

Mon, 22/04/2024 - 14:00 - 15:00

Location:

MPIM Lecture Hall [6]

Parent event:

MPIM Topology Seminar [12]

Details:

Program [13] and Abstracts [14] of Group rings and hyperbolic geometry

In the 60's Cohn showed that all ideals in the group algebra of a free group are free. Bass and Wall used this result to show that all two-dimensional complexes with free fundamental groups are standard: they are all homotopy equivalent to wedges of circles and 2-spheres.

Weiterlesen [11]

The equation $c_1x_1^k+...+c_sx_s^k=0$ [15]

Posted in

Vortrag [4]

Speaker:

Doyon Kim

Zugehörigkeit:

University of Bonn

Datum:

Mon, 22/04/2024 - 14:00 - 15:00

Location:

MPIM Seminar Room [16]

Parent event:

Seminar Circle method for Diophantine equations [17]

Models for Differentiable Stack Cohomology - A journey via equivariant cohomology and Lie groupoids [18]

Posted in

Vortrag [4]

Speaker:

Annika Tarnowsky

Zugehörigkeit:

MPIM/Universität Bonn

Datum:

Die, 23/04/2024 - 10:00 - 11:30

Location:

MPIM Lecture Hall [6]

Parent event:

IMPRS seminar on various topics: single talk [5]

A dichotomy in dimension four [19]

Posted in

Vortrag [4]

Speaker:

Inanc Baykur

Zugehörigkeit:

University of Massachusetts-Amherst

Datum:

Die, 23/04/2024 - 11:45 - 13:00

Location:

MPIM Lecture Hall [6]

Parent event:

Low-dimensional topology seminar [20]

Does every four-manifold admit either no smooth structure or infinitely many of them? I'll report on recent work, joint with A. Stipsicz and Z. Szabó, addressing this question for four-manifolds with finite cyclic fundamental groups. A bonus discussion may feature fake projective planes in the context of yet another dichotomy.

Products on Fixed point Floer homology and closed string mirror symmetry for nodal curves [21]

Posted in

Vortrag [4]

Speaker:

Yuan Yao

Zugehörigkeit:

Paris

Datum:

Die, 23/04/2024 - 13:00 - 14:00

Location:

MPIM Seminar Room [16]

Parent event:

Bonn symplectic geometry seminar [22]

For a symplectomorphism on a surface, its fixed point Floer cohomology is a cochain complex generated by its fixed points and differential defined by counts of J-holomorphic cylinders. The fixed point Floer cohomology has been computed for all symplectomorphisms on surfaces, but it enjoys additional algebraic structure. It has a “product” coming from counts of pairs of pants. We explain how to explicitly compute this “product” in the case the symplectomorphism is an iteration of a Dehn twists.

Weiterlesen [21]

Analytic Rings [23]

Posted in

Vortrag [4]

Speaker:

Semen Slobodianiuk

Zugehörigkeit:

Universität Bonn

Datum:

Die, 23/04/2024 - 14:00 - 16:00

Location:

MPIM Lecture Hall [6]

Parent event:

ARGOS (Arithmetische Geometrie Oberseminar) [24]

Hecke eigen-functions for curves over local non-archimedian fields [25]

Posted in

Vortrag [4]

Speaker:

Alexander Braverman

Zugehörigkeit:

University of Toronto

Datum:

Die, 23/04/2024 - 15:00 - 16:00

Location:

MPIM Seminar Room [16]

Parent event:

Extra talk [26]

We give a survey of some recent constrictions and results concerning Hecke operators for the moduli space of G-bundles on a smooth projective curve X defined over a local non-archimedian field F (possibly with level structures). These operators are somewhat analogous to the usual Hecke operators in the case when F is a finite field but describing their common eigen-values is a much more difficult task. We'll discuss on what space the Hecke operators act, formulate some general conjectures about eigen-functions and consider some examples.

Weiterlesen [25]