Max Dehn Seminar

on Geometry, Topology, Dynamics, and Groups

Date	Speaker	Title — click for abstract (if available)
February 20	Ken Bromberg University of Utah	Stable commutator length on mapping class groups We will discuss stable commutator length on mapping class groups.
February 27	Laura DeMarco University of Illinois, Chicago	Degenerations of complex dynamical systems Given a family of rational maps or polynomials, a basic problem is to understand what happens (dynamically) as the family degenerates. In this talk, I will describe a limiting object as a "non-archimedean dynamical system" in terms of a rational function acting on a Berkovich space. In geometric terms, this is a dynamical system on an R-tree.
March 27	Kevin Wortman University of Utah	TBA TBA
April 3	Sam Taylor University of Texas	Convex cocompactness in Mod(S) via quasiconvexity in RAAGs We will characterize convex cocompact subgroups of mapping class groups that arise as subgroups of specially embedded right-angled Artin groups. With this characterization, we construct convex cocompact subgroups of Mod(S) with "small translation length" on the curve complex. This is joint work with Johanna Mangahas.
April 24	Daniel Studenmund University of Chicago	TBA TBA

Max Dehn Seminar is organized by Mladen Bestvina, Ken Bromberg, Patrick Reynolds,
Domingo Toledo, and Kevin Wortman.

This web page is maintained by Patrick Reynolds .