Tutte seminar - Jim Geelen

Friday, February 13, 2009 3:30 pm - 4:30 pm EST (GMT -05:00)

Inequivalent representations of matroids

Speaker: Jim Geelen
Affiliation: University of Waterloo
Room: Mathematics & Computer Building (MC) 5158

Abstract:

In joint work with Bert Gerards and Geoff Whittle, we showed that 4-connected matroids have a bounded number of inequivalent representations over fields of prime order. At the time we were confident that we could extend this to all finite fields. We were sadly mistaken.