Upcoming talks
September 19th
Speaker: Dave Morris
Affiliation: University of Lethbridge, Alberta, Canada
Title: Automorphisms of direct products of some circulant graphs
Abstract: The direct product of two graphs X and Y is denoted X x Y. Its automorphism group contains a copy of the direct product of Aut(X) and Aut(Y), but it is not known when this inclusion is an equality, even for the special case where X is a circulant graph and Y = K_2 is a connected graph with only 2 vertices. Joint work with Ademir Hujdurović and Đorđe Mitrović sheds some light on this special case, including a complete answer when the valency of X is less than 8.
October 3rd
Speaker: Nathan Lindzey
October 10th
No seminar: Happy Thanksgiving!
Past talks
Youtube playlist with all talks
93. Igor Araujo – Essential Covers of the Cube by Hyperplanes
92. Qianqian Yang – On sesqui-regular graphs with fixed smallest eigenvalue
91. Yufei Zhao – Equiangular lines and eigenvalue multiplicities
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