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Events by date

Friday, August 28, 2020

Friday, August 28, 2020 — 3:30 PM EDT

Title: Pure pairs

Speaker: Sophie Spirkl Affiliation: University of Waterloo Zoom: Please email Emma Watson.

Abstract:

A pure pair in a graph G is a pair of subsets A and B of the vertex set such that between A and B, either all edges or no edges are present in G. This concept was first introduced in connected with the Erdos-Hajnal conjecture, but has since developed a life of its own. I will give an overview of results and open questions on pure pairs.

Based on joint work with Maria Chudnovsky, Jacob Fox, Alex Scott, and Paul Seymour.

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