Upcoming Talks

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Events

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

Oberseminar Arithmetic Geometry and Representation Theory

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Talk

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

WIQI topology seminar - CANCELLED -

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Talk

Date:

Fri, 04/04/2025 - 12:45 - 14:30

Location:

MPIM Seminar Room

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

PLeaSANT: Surprise welcome talk and disucssion of organisational matters

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Talk

Speaker:

N.N.

Date:

Mon, 07/04/2025 - 16:30 - 17:30

Location:

MPIM Lecture Hall

Parent event:

PLeaSANT (Participative Learning Seminar on Any Number Theory)

Connecting essential triangulations

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Talk

Speaker:

Tejas Kalelkar

Affiliation:

Indian Institute of Science Education and Research/MPIM

Date:

Tue, 08/04/2025 - 11:00 - 12:00

Location:

MPIM Lecture Hall

Parent event:

Low-dimensional topology seminar

Let M be a 3-dimensional compact manifold with non-empty boundary. There exists a collection of tetrahedra stuck in pairs along their faces such that deleting all their vertices gives a space that is homeomorphic to the interior of M. This is called a (ideal) triangulation of M. Amendola, Matveev and Piergallini have shown that any two such triangulations of M are connected by a sequence of triangulations, where each triangulation in the sequence is obtained from the previous one by a local combinatorial change, namely a 2-3 or 3-2 move.

May I have a dream? Numerical, of course...

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Talk

Speaker:

Wadim Zudilin

Affiliation:

Radboud University Nijmegen/MPIM

Date:

Wed, 09/04/2025 - 14:30 - 15:30

Location:

MPIM Lecture Hall

Parent event:

Number theory lunch seminar

Though the number $\pi$ is known to be irrational and transcendental, there are still a lot of open (and non-approachable at the moment) questions about its approximations by rational numbers. Where do such difficulties source from? What is exactly proving that a given (nice) number is irrational? How relevant is the structure of such concrete irrationality proofs? In my talk I will try to highlight these points and to explain why the "structure" is most important, in particular, when it comes to connection with more rational areas in mathematics.

Constructing modular forms geometrically

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Talk

Speaker:

Gerard van der Geer

Affiliation:

Amsterdam/MPIM

Date:

Thu, 10/04/2025 - 10:30 - 12:00

Location:

MPIM Lecture Hall

Parent event:

Seminar Algebraic Geometry (SAG)

Modular forms live on moduli spaces of abelian varieties and curves as sections of vector bundles. We indicate
geometric ways of constructing such forms.

This is joint work with Cléry, Faber and Kouvidakis.

On the Homological Theory of Modules over Commutative Rings

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Talk

Speaker:

Olgur Celikbas

Affiliation:

West Virginia University, Morgantown/MPIM

Date:

Thu, 10/04/2025 - 15:00 - 16:00

Location:

MPIM Lecture Hall

Parent event:

MPI-Oberseminar

This talk will be a partial survey of topics in homological commutative local algebra. In particular, I will discuss results on depth, homological dimensions, and torsion properties of tensor products and powers, as well as characterizations of Gorenstein and regular rings via (co)homology vanishing. I will also mention related conjectures and open problems in this area.