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arXiv:1501.06682 [math.GR]AbstractReferencesReviewsResources

The $Σ$-invariants of Thompson's group $F$ via Morse theory

Stefan Witzel, Matthew C. B. Zaremsky

Published 2015-01-27Version 1

Bieri, Geoghegan and Kochloukova computed the BNSR-invariants $\Sigma^m(F)$ of Thompson's group $F$ for all $m$. We recompute these using entirely geometric techniques, making use of the Stein--Farley CAT(0) cube complex on which $F$ acts.

Comments: 17 pages, 2 figures
Categories: math.GR, math.GT
Subjects: 20F65, 57M07
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