Right-angled Artin groups and their automorphisms

Right-angled Artin groups and their automorphisms

Mon, 07/11/2011
15:45 		Ric Wade (Oxford) Topology Seminar Add to calendar L3
Right-angled Artin groups and their automorphisms
Automorphisms of right-angled Artin groups interpolate between $ Out(F_n) $ and $ GL_n(\mathbb{Z}) $. An active area of current research is to extend properties that hold for both the above groups to $ Out(A_\Gamma) $ for a general RAAG. After a short survey on the state of the art, we will describe our recent contribution to this program: a study of how higher-rank lattices can act on RAAGs that builds on the work of Margulis in the free abelian case, and of Bridson and the author in the free group case.