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Kommende Vorträge

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

Felix Klein Lecture / "Recent Progress on the theory of minimal surfaces"

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Speaker: 
André Neves
Zugehörigkeit: 
University of Chicago
Datum: 
Don, 03/04/2025 - 15:00 - 16:00
Location: 
MPIM Lecture Hall
Parent event: 
MPI-Oberseminar

Felix Klein Lecture jointly with the MPI-Oberseminar.

Further information: https://math-events.uni-bonn.de/event/260/

 

WIQI topology seminar - CANCELLED -

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Datum: 
Fre, 04/04/2025 - 12:45 - 14:30
Location: 
MPIM Seminar Room

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

Connecting essential triangulations

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Speaker: 
Tejas Kalelkar
Zugehörigkeit: 
Indian Institute of Science Education and Research/MPIM
Datum: 
Die, 08/04/2025 - 11:00 - 12:00
Location: 
MPIM Lecture Hall

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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Speaker: 
Wadim Zudilin
Zugehörigkeit: 
Radboud University Nijmegen/MPIM
Datum: 
Mit, 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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Speaker: 
Gerard van der Geer
Zugehörigkeit: 
Amsterdam/MPIM
Datum: 
Don, 10/04/2025 - 10:30 - 12:00
Location: 
MPIM Lecture Hall

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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Speaker: 
Olgur Celikbas
Zugehörigkeit: 
West Virginia University, Morgantown/MPIM
Datum: 
Don, 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.

tba

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Speaker: 
Neeti Gauniyal
Zugehörigkeit: 
MPIM
Datum: 
Die, 15/04/2025 - 11:00 - 12:00
Location: 
MPIM Lecture Hall

Twisted Milnor torsion for finite group actions

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Speaker: 
Pedram Hekmati
Zugehörigkeit: 
University of Auckland
Datum: 
Mit, 16/04/2025 - 10:30 - 12:00
Location: 
MPIM Lecture Hall

The Milnor torsion is an invariant of unitary flat vector bundles on closed odd-dimensional manifolds. Its analytic counterpart was introduced by Ray and Singer and the equality of these torsions is the celebrated Cheeger-Müller theorem. In this talk, I will discuss how to extend the Milnor torsion to certain equivariant flat superconnections (or representations up to homotopy) for finite group actions and its relation to analytic torsion of the twisted de Rham complex.

tba

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Speaker: 
Inanc Baykur
Zugehörigkeit: 
University of Massachusetts Amherst
Datum: 
Die, 22/04/2025 - 11:00 - 12:00
Location: 
MPIM Lecture Hall

Arithmetic counting and zeta functions - a panorama

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Speaker: 
Valentin Blomer
Zugehörigkeit: 
University of Bonn
Datum: 
Mon, 05/05/2025 - 10:00 - 11:00
Location: 
MPIM Lecture Hall

I present a variety of examples on the interplay of number theoretic counting problems and analytic properties of zeta functions. I take a closer look at the representation zeta function of SL(3, Z) and show how to obtain analytic continuation and a natural boundary for this function.

 

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