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Upcoming Talks

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

Recent developments in Quantum Topology -- Cancelled --

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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.

"What is...?" seminar

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Organiser(s): 
Charles Fougeron, Diego Izquierdo
Date: 
Fri, 2018-10-26 13:00 - Fri, 2019-08-30 16:30
Location: 
MPIM Lecture Hall

Recent developments in Quantum Topology

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Speaker: 
Stavros Garoufalidis
Affiliation: 
MPIM
Date: 
Fri, 2019-05-24 13:30 - 15:00
Location: 
MPIM Lecture Hall

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.

Modularity of Galois representations I

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Speaker: 
Christian Kaiser
Affiliation: 
MPIM
Date: 
Mon, 2019-05-27 14:15 - 15:45
Location: 
MPIM Lecture Hall
Parent event: 
IMPRS Minicourse

Reduced quantum Knizhnik-Zamolodchikov equations for density operators of spin chains

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Speaker: 
Alexander Razumov
Affiliation: 
NRC "Kurchatov Institute - IHEP", Protvino/MPIM
Date: 
Tue, 2019-05-28 14:00 - 15:00
Location: 
MPIM Lecture Hall

The derivation of the equations satisfied by the density operator of a quantum integrable spin chain will be discussed. We use the quantum group approach and derive the equations for the case of an arbitrary quantum loop algebra.
 

Vertex Operator Algebras and Modular Forms

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Speaker: 
Don Zagier
Affiliation: 
MPIM
Date: 
Tue, 2019-05-28 16:30 - 18:00
Location: 
MPIM Lecture Hall

Time: Tuesdays, 4.30 - 6 pm
Place: MPIM Lecture Hall, Vivatsgasse 7
First lecture: on April 2, 2019, end on July 2

L-infinity algebras for deformations of Abelian categories and applications to geometry

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Speaker: 
Severin Barmeier
Affiliation: 
MPIM
Date: 
Wed, 2019-05-29 10:30 - 12:00
Location: 
MPIM Lecture Hall

W. Lowen and M. Van den Bergh defined a deformation theory for Abelian categories, such that deformations of the category of (quasi)coherent sheaves on an affine variety Spec A coincide with deformations of the algebra A, which are controlled by the Hochschild cochain complex equipped with the Gerstenhaber bracket.

Non-abelian Kummer maps for curves

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Speaker: 
Alexander Betts
Affiliation: 
MPIM
Date: 
Wed, 2019-05-29 14:30 - 15:30
Location: 
MPIM Lecture Hall
Parent event: 
Number theory lunch seminar

The Q_l-pro-unipotent non-abelian Kummer map associated to a curve X is a certain function controlling the existence of Galois-invariant paths between points of X, and plays an important role in the non-abelian Chabauty method for finding rational points. In this talk, I will report on a project with Netan Dogra, in which we compute these maps explicitly when the base field is p-adic, obtaining a description of them in terms of harmonic analysis on the reduction graph of X. As a result, we are able to prove injectivity results for these maps.

 

Introduction to Gromov-Witten theory, 2

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Speaker: 
Campbell Wheeler
Affiliation: 
MPIM
Date: 
Wed, 2019-05-29 16:30 - 18:00
Location: 
MPIM Seminar Room

Norm Form Equations and Linear Divisibility Sequences

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Speaker: 
Elisa Bellah
Affiliation: 
University of Oregon/MPIM
Date: 
Wed, 2019-05-29 16:30 - 17:30
Location: 
MPIM Lecture Hall

Finding integer solutions to norm form equations is a classic Diophantine problem.

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