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Upcoming Talks

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Abstracts of upcoming talks at the MPIM. For an overview see also the calendar.

Oberseminar Arithmetic Geometry and Representation Theory

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Organiser(s): 
Prof. Dr. J. Fintzen, Prof. Dr. T. Kaletha, Prof. Dr. P. Scholze
Date: 
Fri, 11/10/2024 - 14:05 - Fri, 19/12/2025 - 16:00
Location: 
MPIM Lecture Hall
Details: 
Program and Abstracts of Oberseminar Arithmetic Geometry and Representation Theory

https://people.mpim-bonn.mpg.de/scholze/veranstaltungen.html

Riemann-Hilbert Correspondence and Perverse sheaves

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Speaker: 
Moritz Hartlieb
Affiliation: 
Universität Bonn/MPIM
Date: 
Fri, 13/06/2025 - 10:15 - 11:45
Location: 
MPIM Lecture Hall
Parent event: 
IMPRS seminar on various topics: D-modules

WIQI topology seminar

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Date: 
Fri, 13/06/2025 - 12:45 - 14:30
Location: 
MPIM Seminar Room
Parent event: 
WIQI topology seminar

Seminar webpage:  https://guests.mpim-bonn.mpg.de/bianchi/wiqi.html

Eichler-Shimura theory

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Speaker: 
Jelena Ivancic
Affiliation: 
MPIM/Universität Bonn
Date: 
Mon, 16/06/2025 - 14:00 - 16:00
Location: 
Center for Mathematics Bonn
Parent event: 
ARGOS (Arithmetische Geometrie Oberseminar)

Venue: Endenicher Allee 60, Room 1.007, Math. Center, University of Bonn

What connects Symplectic Geometry so deeply with Algebraic Geometry and Low Dimensional Topology?

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Speaker: 
Katrin Wehrheim
Affiliation: 
UC Berkeley/MPIM
Date: 
Mon, 16/06/2025 - 14:00 - 15:00
Location: 
MPIM Lecture Hall
Parent event: 
MPIM Topology Seminar
The answer that I will propose is a higher categorical structure in symplectic geometry that includes all Fukaya categories and geometric functors between them. Its highly involved algebraic and analytic details are the topic of joint work with Nate Bottman. However, its basic structure can be understood as a natural -- yet not previously studied -- extension of the category of topological spaces and continuous maps.

The elliptic gamma function

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Speaker: 
Wadim Zudilin
Affiliation: 
Radboud University Nijmegen/MPIM
Date: 
Mon, 16/06/2025 - 16:30 - 17:30
Location: 
MPIM Lecture Hall
Parent event: 
PLeaSANT (Participative Learning Seminar on Any Number Theory)

The elliptic gamma function was (re)discovered in 1997 by Ruijsenaars; it gives rise to solutions of models in statistical / mathematical physics. It has a surprising number-theoretic appearance as demonstrated recently by Bergeron, Charollois and García. In parallel with the role of classical Jacobi theta form describing the class field for quadratic imaginary fields, the elliptic gamma function (conjecturally) does this task for cubic fields with a complex embedding.

tba

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Speaker: 
Robert Schneiderman
Affiliation: 
Lehman College CUNY
Date: 
Tue, 17/06/2025 - 11:00 - 12:00
Location: 
MPIM Lecture Hall
Parent event: 
Low-dimensional topology seminar

Counting special points on quadratic surfaces

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Speaker: 
Saurabh Singh
Affiliation: 
Indian Institute of Technology Kanpur/MPIM
Date: 
Wed, 18/06/2025 - 14:30 - 15:30
Location: 
MPIM Lecture Hall
Parent event: 
Number theory lunch seminar

We show that the modern version of the circle method powered by the equidistribution of quadratic roots allows us to count special points on quadratic surfaces. For example, we obtain asymptotics for integer points on quadratic surfaces with prime coordinates and in short intervals.

The K-theory of graded rings

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Speaker: 
Luuk Stehouwer
Affiliation: 
Dalhousie University
Date: 
Wed, 18/06/2025 - 16:30 - 17:30
Location: 
MPIM Seminar Room
Parent event: 
Abstract Homotopy Theory Seminar

The topological K-theory of Z/2-graded C*-algebras plays an important role in operator theory. Historically, finding the definition was rather subtle, for several reasons. For example, simply taking the K-theory of a category of graded modules does not give the 'correct' definition, as I will explain. The definition of Z/2-graded C*-algebras by Karoubi is mostly outmoded because of Kasparov's KK-theory, whose technical definitions are more amenable to computations in index theory.

Beilinson-Bernstein localization via examples

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Speaker: 
Daniel Bermudez
Affiliation: 
MPIM/Universität Bonn
Date: 
Fri, 20/06/2025 - 10:15 - 11:45
Location: 
MPIM Lecture Hall
Parent event: 
IMPRS seminar on various topics: D-modules
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