Journal title
Groups, Geometry, and Dynamics
DOI
10.4171/GGD/442
Issue
1
Volume
12
Last updated
2024-04-10T18:26:43.157+01:00
Page
173-206
Abstract
We introduce a homology theory for subspace arrangements, and use it to extract a new system of numerical invariants from the Bieri-Neumann-Strebel invariant of a group. We use these to characterize when the set of basis conjugating outer automorphisms (a.k.a. the pure symmetric outer automorphism group) of a right-angled Artin group is itself a right-angled Artin group.
Symplectic ID
743623
Submitted to ORA
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Publication type
Journal Article
Publication date
22 Mar 2018