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DTSTART;TZID=America/Toronto:20200828T153000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/tutte-colloq
 uium-sophie-spirkl
SUMMARY:Tutte Colloquium - Sophie Spirkl
CLASS:PUBLIC
DESCRIPTION:TITLE: Pure pairs\n\nSpeaker:\n Sophie Spirkl\n\nAffiliation:\
 n University of Waterloo\n\nZoom:\n Please email Emma Watson.\n\nABSTRACT
 :\n\nA pure pair in a graph G is a pair of subsets A and B of the vertex\n
 set such that between A and B\, either all edges or no edges are\npresent 
 in G. This concept was first introduced in connected with the\nErdos-Hajna
 l conjecture\, but has since developed a life of its own. I\nwill give an 
 overview of results and open questions on pure pairs.\n\nBased on joint wo
 rk with Maria Chudnovsky\, Jacob Fox\, Alex Scott\, and\nPaul Seymour.
DTSTAMP:20260406T065601Z
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