SMS scnews item created by Stephan Tillmann at Thu 9 Oct 2014 1018
Type: Seminar
Distribution: World
Expiry: 8 Jan 2015
Calendar1: 22 Oct 2014 1100-1200
CalLoc1: Carslaw 535A
Auth: tillmann@p710.pc (assumed)

Geometry-Topology-Analysis Seminar

The Bieri-Neumann-Strebel Invariant

Adam Piggott (Bucknell)

GTA Seminar - Wednesday, 22 October, 11:00-12:00 in Carlaw 535A

The Bieri-Neumann-Strebel Invariant of the Pure Symmetric Automorphisms of a Right-Angled Artin Group

We compute the BNS-invariant for the pure symmetric automorphism groups of right-angled Artin groups. We use this calculation to show that the pure symmetric automorphism group of a right-angled Artin group is itself not a right-angled Artin group provided that its defining graph contains a separating intersection of links.  This is joint work with Nic Koban (University of Maine, Farmington)

Please join us for lunch after the talk!

If you are registered you may mark the scnews item as read.
School members may try to .