May 2024

CIRCA seminar June 13th

On June 13th we will have a CIRCA seminar, at 1pm in Theatre D. The speaker is Jim Davis, who is visiting from the University of Richmond.

Title: GAP and difference sets

Abstract: The computer program GAP has played an important role in the search for difference sets. I will give a gentle introduction to difference sets, and I will give several examples why you ought to care about them. I will then describe a decades long search for difference sets in groups of order 256 (the GAP library indicates that there are 56,092 nonisomorphic groups of that order) and the results of that search. Special bonus points to anyone who knows the significance in America of the number 714.