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Talk

Talks and seminars, possibly part of a conference or series.

Loop group action on symplectic cohomology

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Speaker: 
Cheuk Yu Mak
Affiliation: 
University of Southampton
Date: 
Wed, 26/06/2024 - 15:30 - 16:30
Location: 
MPIM Lecture Hall

For a compact Lie group G, its massless Coulomb branch algebra is the G-equivariant

Examples of adic spaces

Posted in
Speaker: 
Itamar Mor
Affiliation: 
MPIM
Date: 
Mon, 24/06/2024 - 10:15 - 12:00
Location: 
MPIM Seminar Room

tba

Posted in
Speaker: 
Tobias Barthel
Affiliation: 
MPIM
Date: 
Fri, 05/07/2024 - 14:05 - 16:00
Location: 
MPIM Lecture Hall

Non-abelian Lubin-Tate theory over R

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Speaker: 
Arnaud Eteve
Affiliation: 
MPIM
Date: 
Fri, 12/07/2024 - 14:00 - 16:00
Location: 
MPIM Lecture Hall

The stack of G-bundles on the twistor-$P^1$

Posted in
Speaker: 
Hiroki Kato
Affiliation: 
MPIM
Date: 
Tue, 09/07/2024 - 14:00 - 16:00
Location: 
MPIM Lecture Hall

Variations of Hodge/twistor structures

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Speaker: 
Ian Gleason
Affiliation: 
Universität Bonn
Date: 
Tue, 02/07/2024 - 14:00 - 16:00
Location: 
MPIM Lecture Hall

The Witten Genus

Posted in
Speaker: 
Jonah Epstein
Affiliation: 
Universität Bonn/MPIM
Date: 
Thu, 27/06/2024 - 12:00 - 13:30
Location: 
MPIM Lecture Hall
Parent event: 
Physical Math Seminar

Fun with 4D fundamental groups

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Speaker: 
Pablo Suarez-Serrata
Affiliation: 
UNAM/MPIM
Date: 
Mon, 01/07/2024 - 14:00 - 15:00
Location: 
MPIM Lecture Hall
Parent event: 
MPIM Topology Seminar

Any finitely presented group can be the fundamental of a smooth 4-manifold. So, generally, the study of 4-manifolds has been restricted to simply connected cases or, thanks to Freedman and Teichner's profound results, to groups with subexponential growth (where surgery theoretical results still hold). In this talk, we'll explore this a bit further.

The universal property of bordism rings of manifolds with commuting involutions

Posted in
Speaker: 
Markus Hausmann
Affiliation: 
Universität Bonn
Date: 
Mon, 24/06/2024 - 14:00 - 15:00
Location: 
MPIM Lecture Hall
Parent event: 
MPIM Topology Seminar

My talk concerns bordism rings of compact smooth manifolds equipped with a smooth action by a finite group. I will start by recalling classical results on the subject from the 60's and 70's, mostly due to Conner-Floyd, Boardman, Stong and Alexander. Afterwards I will discuss joint work with Stefan Schwede in which we prove an algebraic universal property for the collection of all bordism rings of manifolds with commuting involutions. 

 

Intertwining Fourier-Mukai and Wehrheim-Woodward functors via mirror symmetry of tori (master's talk 1)

Posted in
Speaker: 
Stefano Rocca
Affiliation: 
Universität Bonn
Date: 
Tue, 02/07/2024 - 13:00 - 14:00
Location: 
MPIM Seminar Room

After a brief motivation for mirror symmetry, we will discuss how to sistematically produce the mirror symmetry functor for the product, following the paper of Abouzaid and Smith. The technology presented will help us relate Wehrheim-Woodward functors to Fourier-Mukai ones.
For the most part of the talk we will handle symplectic 2-tori, but we will ask ourselves whether what we performed holds in greater generality. Does this point towards a 2-categorical framework for mirror symmetry?



 

Problems in Fourier restriction theory

Posted in
Speaker: 
Dominique Maldague
Affiliation: 
MPI
Date: 
Wed, 10/07/2024 - 16:45 - 17:35
Location: 
MPIM Lecture Hall

This talk will provide an overview of recent developments in Fourier restriction theory, which one could describe as the study of exponential sums over restricted frequency sets with geometric structure, typically arising in PDE or number theory. Decoupling inequalities measure the square root cancellation behavior of these exponential sums.

Oscillatory integrals and stationary phase estimates in analytic number theory

Posted in
Speaker: 
Ian Petrow
Affiliation: 
UCL
Date: 
Wed, 10/07/2024 - 14:45 - 15:45
Location: 
MPIM Lecture Hall

I will give an overview of how oscillatory integrals arise in analytic number theory, especially the theory of L-functions and automorphic forms. Usually the integrals we are faced with are multiple-yet-low dimensional, so that they are approachable by repeated one-dimensional stationary phase estimates.

Hodge theory, unlikely intersections and o-minimal geometry

Posted in
Speaker: 
Kenneth Chiu
Affiliation: 
Rice University/MPIM
Date: 
Thu, 27/06/2024 - 15:00 - 16:00
Location: 
MPIM Lecture Hall
Parent event: 
MPI-Oberseminar
We will begin with an introduction of the key notions in Hodge theory. We will then explain how Hodge theory is used to prove results (called Ax-Schanuel) about transcendental degrees of function fields.

Arithmetic jet spaces and the Zilber—Pink conjecture

Posted in
Speaker: 
Netan Dogra
Affiliation: 
King's College London
Date: 
Mon, 24/06/2024 - 11:15 - 12:15
Location: 
MPIM Lecture Hall
Parent event: 
Number theory lunch seminar

The ZilberPink conjecture is a simultaneous generalisation of the MordellLang conjecture and the Andre

Oscillatory integrals in number theory. Number Theory Lunch Seminar jointly with the Hausdorff School

Posted in
Organiser(s): 
Pieter Moree (MPIM), Lilian Pierce (Duke/Bonn))
Date: 
Wed, 10/07/2024 - 14:45 - 15:45
Location: 
MPIM Lecture Hall

-- CANCELLED -- Intertwining Fourier-Mukai and Wehrheim-Woodward functors via mirror symmetry of tori (master's talk 1)

Posted in
Speaker: 
Stefano Rocca
Affiliation: 
Universität Bonn
Date: 
Tue, 18/06/2024 - 13:00 - 14:00
Location: 
MPIM Seminar Room

After a brief motivation for mirror symmetry, we will discuss how to sistematically produce the mirror symmetry functor for the product, following the paper of Abouzaid and Smith. The technology presented will help us relate Wehrheim-Woodward functors to Fourier-Mukai ones.
For the most part of the talk we will handle symplectic 2-tori, but we will ask ourselves whether what we performed holds in greater generality. Does this point towards a 2-categorical framework for mirror symmetry?



 

Λ-algebras and the algebraic EHP sequence

Posted in
Speaker: 
Yuqing Shi
Affiliation: 
MPIM
Date: 
Thu, 20/06/2024 - 10:30 - 12:00
Location: 
MPIM Seminar Room

The restricted lower central series spectral sequence

Posted in
Speaker: 
Itamar Mor
Affiliation: 
MPIM
Date: 
Tue, 18/06/2024 - 10:30 - 12:30
Location: 
MPIM Seminar Room

Adic spaces

Posted in
Speaker: 
Ningchuan Zhang
Affiliation: 
MPIM
Date: 
Mon, 17/06/2024 - 10:15 - 12:00
Location: 
MPIM Seminar Room

tba

Posted in
Speaker: 
Arnab Saha
Affiliation: 
Chennai Mathematical Institute
Date: 
Thu, 27/06/2024 - 16:30 - 17:30
Location: 
MPIM Lecture Hall
Parent event: 
Number theory lunch seminar
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