Skip to main content

Kommende Vorträge

Posted in

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

Recent developments in Quantum Topology -- Cancelled --

Posted in

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.

Positivity, higher Teichmüller spaces and (non-commutative) cluster algebras

Posted in
Speaker: 
Anna Wienhard
Zugehörigkeit: 
Heidelberg Universität
Datum: 
Die, 2021-04-20 14:00 - 15:30

https://hu-berlin.zoom.us/j/61339297016
 

Maxima of a Random Model of the Riemann Zeta Function over Intervals of Varying Length

Posted in
Speaker: 
Lisa Hartung
Zugehörigkeit: 
Universität Mainz
Datum: 
Mit, 2021-04-21 14:30 - 15:30
Parent event: 
Number theory lunch seminar

Zoom Meeting ID: 919 6497 4060
For password see the email or contact Pieter Moree (moree@mpim...).

Formalism of Perverse Sheaves

Posted in
Speaker: 
Gregory Andreychev
Zugehörigkeit: 
Universität Bonn/MPIM
Datum: 
Mit, 2021-04-21 16:15 - 17:45

Zoom Meeting-ID: 994 2805 4844
For passcode please contact Christian Kaiser (kaiser@mpim...).

Topological rigidity and low dimensional topology

Posted in
Speaker: 
Jim Davis
Zugehörigkeit: 
Bloomington/MPIM
Datum: 
Mon, 2021-04-26 14:00 - 15:00
Parent event: 
MPIM Topology Seminar
An aspherical manifold is a manifold whose universal cover is contractible, i.e. a K(\pi,1)-manifold. Borel conjectured that any two closed aspherical manifolds with isomorphic fundamental groups are homeomorphic, in fact, that the structure set of an aspherical manifold is trivial. Wall asked if a K(\pi,1)-space which satisfies Poincare duality is homotopy equivalent to a closed manifold.

Bilinear discretization of quadratic vector fields: integrability and geometry

Posted in
Speaker: 
Yuri B. Suris
Zugehörigkeit: 
TU Berlin
Datum: 
Die, 2021-04-27 14:00 - 15:30

https://hu-berlin.zoom.us/j/61339297016
 

We discuss dynamics of birational maps which appear as bilinear discretizations of quadratic vector fields. The corresponding dynamical systems turn out to be integrable much more often than could be expected. Various aspects of integrability of birational dynamical systems will be discussed, along with remarkable geometric structures behind some of the particular examples.

Perverse Sheaves and Morse Theory

Posted in
Speaker: 
Axel Koelschbach
Zugehörigkeit: 
Universität Bonn/MPIM
Datum: 
Mit, 2021-04-28 16:15 - 17:45

Zoom Meeting-ID: 994 2805 4844
For passcode please contact Christian Kaiser (kaiser@mpim...).

Geometry without spaces: a hyperbolic parable

Posted in
Speaker: 
Nicolas Monod
Zugehörigkeit: 
École Polytechnique Fédérale de Lausanne (EPFL)
Datum: 
Don, 2021-04-29 16:30 - 18:00

We revisit old ideas that are shared by functional analysts and logicians alike, in order to do hyperbolic geometry without bothering with practicalities such as spaces or dimension.

Our main interest will be the interplay between (real or complex) hyperbolic geometry and group representations.

 

tba

Posted in
Speaker: 
Matthias Kreck
Zugehörigkeit: 
Universität Bonn
Datum: 
Mon, 2021-05-03 14:00 - 15:00
Parent event: 
MPIM Topology Seminar

Meeting ID: 916 5855 1117
Password: as before.
Contact: Aru Ray and Tobias Barthel.
 

Non-associative Moufang loop of point classes on a cubic surface

Posted in
Speaker: 
Yuri Manin
Zugehörigkeit: 
MPIM
Datum: 
Die, 2021-05-04 14:00 - 15:30

https://hu-berlin.zoom.us/j/61339297016

In this talk I will explain, how the problem stated in my book Cubic Surfaces, was recently solved by Dimitri Kanevsky, after about fifty years since its publication.

© MPI f. Mathematik, Bonn Impressum & Datenschutz
-A A +A