Thursday, July 12, 2018

Thursday, July 12, 2018 — 1:30 PM EDT

Title: Periodicity on Oriented Graphs by way of Transcendental Number Theory

Speaker: Sabrina Lato Affiliation: University of Waterloo Room: MC 6486

Abstract: Using the adjacency matrix of a graph, it is straightforward to show that perfect state transfer between two vertices at some time t implies that both vertices will be periodic at time 2t.

Thursday, July 12, 2018 — 3:30 PM EDT

Title: Gaps in the crossing numbers of drawings of the complete graph

Speaker: Bruce Richter Affiliation: University of Waterloo Room: MC 5479

Abstract: In the late 1990’s, a 5-author manuscript circulated proving the existence of intervals of integers that connot occur as the crossing number of a “good” drawing of the complete graph. 

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