## Algebraic Graph Theory Seminar - Gordon Royle

*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.