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Please note: The University of Waterloo is closed for all events until further notice.

Events by date

Thursday, March 5, 2020

Thursday, March 5, 2020 — 1:00 PM EST

Title: Strongly cospectral vertices in cubelike graphs

Speaker: Soffia Arnadottir Affiliation: University of Waterloo Room: MC 5417

Abstract:

A cubelike graph is a Cayley graph of the elementary abelian 2-group. Two vertices in a graph are strongly copsectral if they are cospectral and parallel.

Thursday, March 5, 2020 — 2:30 PM EST

Title: Combinatorial Hall algebras

Speaker: Matt Szczesny Affiliation: Boston University Room: MC 5417

Abstract:

The Hall algebra of a finitary category is an associative (and sometimes Hopf) algebra whose structure constants count the number of extensions between objects.

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