Mathematics Dept.
  Events
University of British Columbia
Fri 29 May 2020, 8:00am
Algebraic Groups and Related Structures
Online: link available from Zinovy Reichstein
Codimension two cycles on classifying stacks of algebraic tori
Online: link available from Zinovy Reichstein
Fri 29 May 2020, 8:00am-9:00am

Abstract

We give an example of an algebraic torus T such that the group CH^2(BT)_{tors} is non-trivial. This answers a question of Blinstein and Merkurjev.
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Columbia U.
Fri 29 May 2020, 8:00am
Probability Seminar
Online--see O. Angel, M. Murugan or E. Perkins for link
Gibbsian line ensembles in integrable probability
Online--see O. Angel, M. Murugan or E. Perkins for link
Fri 29 May 2020, 8:00am-10:00am

Abstract

 Many important models in integrable probability (e.g. the KPZ equation, solvable directed polymers, ASEP, stochastic six vertex model) can be embedded into Gibbisan line ensembles. This hidden probabilistic structure provides new tools to control the behaviour and asymptotics of these
systems. In my third talk I will zoom out and discuss the origins of this hidden structure. 

In my lectures I will try toward from first principles as much as possible.  The TA sessions and problems sets will serve to reinforce and fill in the details from the lectures.  
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Technical University of Munich
Mon 1 Jun 2020, 9:00am SPECIAL
Probability Seminar
Online. See Omer Angel, Mathav Murugan or Ed Perkins for link
Branching random walks: some recent results and open questions I
Online. See Omer Angel, Mathav Murugan or Ed Perkins for link
Mon 1 Jun 2020, 9:00am-10:00am

Abstract

We give an introduction to branching random walks and their continuous counterpart, branching Brownian motion.We explain some recent results on the maximum of a branching random walk  and its relation to point processes, as well as a connection with fragmentations. The focus will be on open questions.  



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Technical University of Munich
Tue 2 Jun 2020, 9:00am SPECIAL
Probability Seminar
Online--see O. Angel, M. Murugan or E. Perkins for link
Branching random walks: some recent results and open questions II
Online--see O. Angel, M. Murugan or E. Perkins for link
Tue 2 Jun 2020, 9:00am-10:00am

Abstract

 See Monday's lecture.
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Nancy Kopell
Boston University
Wed 3 Jun 2020, 12:00pm
Mathematical Biology Seminar
Zoom - see PIMS remote seminars for details
Brain Rhythms and their Interactions
Zoom - see PIMS remote seminars for details
Wed 3 Jun 2020, 12:00pm-1:00pm

Abstract


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Sebastian Gant
UBC Math
Wed 3 Jun 2020, 3:15pm
Topology and related seminars
Zoom. Contact organizers for meeting ID.
Spaces of Generators of Matrix Algebras
Zoom. Contact organizers for meeting ID.
Wed 3 Jun 2020, 3:15pm-4:15pm

Abstract

Let U_n^r denote the space of r-tuples of nxn complex matrices that generate the matrix algebra Mat_n(C) as an algebra over C. The projective general linear group acts on U_n^r by simultaneous conjugation, and one can form the quotient: B_n^r. These two families of spaces have many interesting homotopical properties. Notably, the spaces B_n^r approximate the classifying space BPGL_n(C); I will show that there is a map B_n^r->BPGL_n(C) that induces an isomorphism on homotopy groups in degrees <2(r-1)(n-1)-1. Lastly, I will sketch the computation of the singular cohomology groups of U_2^r and B_2^r in degrees <4r-6. 
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Technical U.Munich
Thu 4 Jun 2020, 9:00am SPECIAL
Probability Seminar
Online--see O. Angel, M. Murugan or E. Perkins for link
Branching random walks: some recent results and open questions III
Online--see O. Angel, M. Murugan or E. Perkins for link
Thu 4 Jun 2020, 9:00am-10:00am

Abstract

 See Monday's lecture.
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