Soffia Arnadottir

Affiliation: Technical University of Denmark

Title: Strongly cospectral vertices, Cayley graphs and other things

Abstract: In this talk we will look at a connection between the number of pairwise strongly cospectral vertices in a translation graph (a Cayley graph of an abelian group) and the multiplicities of its eigenvalues. We will use this connection to give an upper bound on the number of pairwise strongly cospectral vertices in cubelike graphs.


You can watch the talk here, and the slides are available here.

This talk was given on November 7th, 2022

Affiliation: University of Waterloo, Ontario

Title: Strongly cospectral vertices, Cayley graphs and other things

Abstract: In this talk we will look at a connection between the number of pairwise strongly cospectral vertices in a translation graph (a Cayley graph of an abelian group) and the multiplicities of its eigenvalues. We will use this connection to give an upper bound on the number of pairwise strongly cospectral vertices in cubelike graphs.


You can watch the talk here and the slides are available here.

This talk was given on September 28th, 2020