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Upcoming Talks

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Abstracts of upcoming talks at the MPIM. For an overview see also the calendar [2].

Recent developments in Quantum Topology -- Cancelled -- [3]

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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.

Excess and residual intersections [5]

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Speaker: 
Rostislav Devyatov
Affiliation: 
MPIM
Date: 
Mon, 2020-11-30 10:30 - 12:00
Parent event: 
Online reading group "Intersection theory on stacks" [6]

https://bbb.mpim-bonn.mpg.de/b/rei-xh2-kg6 [7]
For password email to rkramer@mpim...

The Borel Conjecture and aspherical 4-manifolds [8]

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Speaker: 
Jim Davis
Affiliation: 
Indiana University, Bloomington/MPIM
Date: 
Mon, 2020-11-30 14:00 - 14:20
Parent event: 
MPIM Topology Seminar [9]

A space is aspherical if its universal cover is contractible.   Obstruction theory shows that any two aspherical CW complexes with isomorphic fundamental groups are homotopy equivalent.   The Borel Conjecture states that any two closed aspherical manifolds with isomorphic fundamental groups are homeomorphic.    The Borel Conjecture for manifolds with boundary states that two aspherical compact manifolds with isomorphic fundamental groups and homeomorphic boundaries are in fact homeomorphic.

Representing handlebody groups [10]

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Speaker: 
Lukas Mueller
Affiliation: 
MPIM
Date: 
Mon, 2020-11-30 14:30 - 14:50
Parent event: 
MPIM Topology Seminar [9]
I will describe the construction of handlebody group representations from representation theoretical quantities such as the representation category of certain Hopf algebras. The talk will focus on how the topology 'determines' the relevant algebraic structure.
 
Meeting ID: 916 5855 1117
Password: as before.
 
Contact: Aru Ray and Tobias Barthel

 

Boundary emptiness formation probabilities in the six-vertex model at $\Delta = - 1/2$ [11]

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Speaker: 
Alexi Morin-Duchesne
Affiliation: 
MPIM
Date: 
Tue, 2020-12-01 14:00 - 15:00
Parent event: 
Seminar on Algebra, Geometry and Physics/joint with HU Berlin [12]

https://bbb.mpim-bonn.mpg.de/b/gae-a7y-hhd [13]

 

Random Models for Artin Twin Primes [14]

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Speaker: 
Ezra Waxman
Affiliation: 
TU Dresden
Date: 
Wed, 2020-12-02 14:30 - 15:30
Parent event: 
Number theory lunch seminar [15]

We say that a prime number p is an Artin prime for g if g is a primitive root mod p. For appropriately chosen integers g and d, we present a conjecture for the asymptotic number of prime pairs (p,p+d) such that both p and p+d are Artin primes for g. Our result suggests that the distribution of Artin prime pairs, amongst the ordinary prime pairs, is largely governed by a Poisson process. (Joint work with Magdaléna Tinková and Mikuláš Zindulka).

The dual Steenrod Algebra and sample computations in the Adams Spectral Sequence [16]

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Speaker: 
Luuk Stehouwer
Affiliation: 
MPIM
Date: 
Thu, 2020-12-03 14:15 - 15:45
Parent event: 
IMPRS seminar on various topics: The Adams Spectral Sequence [17]

Meeting ID: 974 6894 7515
For passcode see the email or contact Christian Kaiser (kaiser@mpim...).

tba [18]

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Speaker: 
Dimitri Panov
Affiliation: 
King's College London
Date: 
Thu, 2020-12-03 16:30 - 18:00
Parent event: 
Oberseminar Differentialgeometrie [19]

The seminar is virtual via Zoom. If you are interested in participating, please contact Stephan Stadler
 (stadler@mpim...)

Separation of periods of quartic surfaces [20]

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Speaker: 
Emre Sertöz
Affiliation: 
MPIM
Date: 
Wed, 2020-12-09 14:30 - 15:30
Parent event: 
Number theory lunch seminar [15]

Kontsevich--Zagier periods form a natural number system that extends the
algebraic numbers by adding constants coming from geometry and physics.
Because there are countably many periods, one would expect it to be
possible to compute effectively in this number system. This would require
an effective height function and the ability to separate periods of bounded
height, neither of which are currently possible.

In this talk, we introduce an effective height function for periods of quartic
surfaces defined over algebraic numbers. We also determine the

tba [21]

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Speaker: 
Thomas Wannerer
Affiliation: 
Friedrich-Schiller-Universität Jena
Date: 
Thu, 2020-12-10 16:30 - 18:00
Parent event: 
Oberseminar Differentialgeometrie [19]
Source URL: http://www.mpim-bonn.mpg.de/node/221

Links:
[1] http://www.mpim-bonn.mpg.de/taxonomy/term/3
[2] http://www.mpim-bonn.mpg.de/calendar
[3] http://www.mpim-bonn.mpg.de/node/9454
[4] http://www.mpim-bonn.mpg.de/taxonomy/term/39
[5] http://www.mpim-bonn.mpg.de/node/10535
[6] http://www.mpim-bonn.mpg.de/node/10395
[7] https://bbb.mpim-bonn.mpg.de/b/rei-xh2-kg6
[8] http://www.mpim-bonn.mpg.de/node/10599
[9] http://www.mpim-bonn.mpg.de/node/6994
[10] http://www.mpim-bonn.mpg.de/node/10601
[11] http://www.mpim-bonn.mpg.de/node/10498
[12] http://www.mpim-bonn.mpg.de/node/10472
[13] https://bbb.mpim-bonn.mpg.de/b/gae-a7y-hhd
[14] http://www.mpim-bonn.mpg.de/node/10605
[15] http://www.mpim-bonn.mpg.de/node/246
[16] http://www.mpim-bonn.mpg.de/node/10609
[17] http://www.mpim-bonn.mpg.de/node/10608
[18] http://www.mpim-bonn.mpg.de/node/10561
[19] http://www.mpim-bonn.mpg.de/node/3050
[20] http://www.mpim-bonn.mpg.de/node/10602
[21] http://www.mpim-bonn.mpg.de/node/10563
[22] http://www.mpim-bonn.mpg.de/print/221?page=1