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Events by date

Monday, October 19, 2020

Monday, October 19, 2020 — 11:30 to 11:30 AM EDT

Title: Pretty Good State Transfer and Minimal Polynomials

Speaker: Christopher van Bommel Affiliation: University of Manitoba Zoom: Contact Soffia Arnadottir

Abstract:

We examine conditions for a pair of strongly cospectral vertices to have pretty good quantum state transfer in terms of minimal polynomials, and provide cases where pretty good state transfer can be ruled out.

Monday, October 19, 2020 — 3:00 PM EDT

Title: The Hepp bound of a matroid: flags, volumes and integrals

Speaker: Erik Panzer Affiliation: University of Oxford Zoom: Contact Rose McCarty

Abstract:

Invariants of combinatorial structures can be very useful tools that capture some specific characteristics, and repackage them in a meaningful way. For example, the famous Tutte polynomial of a matroid or graph tracks the rank statistics of its submatroids, which has many applications, and relations like contraction-deletion establish a very close connection between the algebraic structure of the invariant (e.g. Tutte polynomials) and the actual matroid itself.

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