Subspace arrangements, BNS invariants, and pure symmetric outer automorphisms of right-angled Artin groups
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 g...
Autors principals: | Day, M, Wad, R |
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Format: | Journal article |
Publicat: |
European Mathematical Society
2018
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