Monday, February 22, 2021

Monday, February 22, 2021 — 6:00 PM EST

*Note different start time

Title: Real Chromatic Roots of Graphs

Speaker: Gordon Royle Affiliation: The University of Western Australia Zoom: Contact Soffia Arnadottir

Abstract:

In February 1988, I arrived at C&O Waterloo for a postdoc with the late Ron Read. He handed me a paper by Beraha, Kahane and Weiss, and told me to apply it to determining the location of the complex roots of chromatic polynomials.  I’ve returned to the topic every few years since then, with varying degrees of success---some positive results, but still many open problems and conjectures remain.

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