Dual spanning trees in planar graphs, and "filling invariants" for finitely presented groups
Tim Riley (Bristol)
Wednesday 19th November, 2008 16:00-17:00 214
I will describe some work with W.P.Thurston on how duality conditions affect the existence of efficient spanning trees in planar graphs. I will explain how the topic came to my attention in the course of studying "filling invariants" for finitely presented groups.