Friday, February 13, 2009
3:30 pm, MC 5158

Tutte Seminar Series
Combinatorics & Optimization
Winter 2009


Jim Geelen
University of Waterloo

Inequivalent representations of matroids

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 t ime we were confident that we could extend this to all finite fields. We were sadly mistaken.