Wednesday, November 29, 2017 at 4:15pm to 5:15pm
SPEAKER: Joshua Greene (Boston College)
TITLE: Coloring curves on surfaces
The curve complex of a surface is a central object in hyperbolic geometry and geometric group theory. It displays some remarkable combinatorial features, but these have been less intensively studied. In this talk, I will discuss the problem of determining and estimating the chromatic number of the curve complex and its relatives. Kneser graphs appear in a surprising way, and there are a number of attractive open problems.
The talk is targeted at combinatorialists with no prior background in topology. It is based on joint work with Jonah Gaster and Nick Vlamis.