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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.

Operads of musical phrases and generation

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Speaker: 
Samuele Giraudo
Affiliation: 
Université Gustave Eiffel
Date: 
Tue, 2021-07-27 14:00 - 15:30
Parent event: 
Seminar on Algebra, Geometry and Physics/joint with HU Berlin

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

Elliptic curves and chromatic homotopy theory

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Speaker: 
Irina Bobkova
Affiliation: 
Texas A&M University/z.Z. MPIM
Date: 
Thu, 2021-07-29 15:00 - 16:00
Parent event: 
MPI-Oberseminar

https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For passcode of this talk please contact Tobias Barthel (tbarthel@mpim-bonn.mpg.de)

New bounds on growth in SL_n

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Speaker: 
Harald Helfgott (University of Göttingen)
Organiser(s): 
Rudradip Biswas (University of Manchester/MPIM)
Date: 
Thu, 2021-07-29 16:00 - 17:00
Parent event: 
Extra talk

Zoom ID: 992 4902 2878
https://zoom.us/j/99249022878

tba

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Speaker: 
Younes Nikdelan
Affiliation: 
MPIM
Date: 
Wed, 2021-08-04 14:30 - 15:30
Parent event: 
Number theory lunch seminar

Symmetries of 4-manifolds

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Speaker: 
Mark Powell
Affiliation: 
University of Durham/MPIM
Date: 
Thu, 2021-08-05 15:00 - 16:00
Parent event: 
MPI-Oberseminar

https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For passcode of this talk please contact Pieter Moree (moree@mpim-bonn.mpg.de)

 

tba

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Speaker: 
Emil-Alexandru Ciolan
Affiliation: 
MPIM
Date: 
Wed, 2021-08-11 14:30 - 15:30
Parent event: 
Number theory lunch seminar

Braid varieties and algebraic weaves

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Speaker: 
Jose Simental Rodriguez
Affiliation: 
MPIM
Date: 
Thu, 2021-08-12 15:00 - 16:00
Parent event: 
MPI-Oberseminar

https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For password please contact Christian Kaiser (kaiser@mpim-bonn.mpg.de).

A sparse equidistribution problem for expanding horocycles on the modular surface

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Speaker: 
Claire Burrin
Affiliation: 
ETHZ/z. Z. HIM
Date: 
Wed, 2021-08-18 14:30 - 15:30
Parent event: 
Number theory lunch seminar

The orbits of the horocycle flow on hyperbolic surfaces are classified: each orbit is either dense or a closed horocycle around a cusp. Expanding closed horocycles are themselves asymptotically dense, and in fact become equidistributed on the surface. The precise rate of equidistribution is of interest; on the modular surface, Zagier observed that a particular rate is equivalent to the Riemann hypothesis being true. I will discuss the asymptotic behavior of evenly spaced points along an expanding closed horocycle. This is based on joint work with Uri Shapira and Shucheng Yu.

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