Property FA is not a profinite property

We exhibit infinitely many pairs of non-isomorphic finitely presented, residually finite groups \Delta and \Gamma with \Delta having Property FA, \Gamma having a non-trivial action on a tree, and \Delta and \Gamma having isomorphic profinite completions.

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Publication Details

Journal
Groups Geometry and Dynamics
Published
2024-10-14
DOI
https://doi.org/10.4171/ggd/802
Citations
4
Primary Topic
Geometric and Algebraic Topology
Type
article
Field-Weighted Citation Impact
4.05

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article

Property FA is not a profinite property

Alexander Lubotzky, Alan W. Reid, Tamunonye Cheetham‐West, Ryan Spitler
4 citations
Groups Geometry and Dynamics
Geometric and Algebraic Topology
4.05
article

Property FA is not a profinite property

Alexander Lubotzky, Alan W. Reid, Tamunonye Cheetham‐West, Ryan Spitler
article en
4 citations

Abstract

We exhibit infinitely many pairs of non-isomorphic finitely presented, residually finite groups \Delta and \Gamma with \Delta having Property FA, \Gamma having a non-trivial action on a tree, and \Delta and \Gamma having isomorphic profinite completions.

Groups Geometry and DynamicsVol. 19(3)
Yale University (US), Weizmann Institute of Science (IL), Rice University (US)
Rice University, European Commission
Openalex Percentile: Top 5%
Geometric and Algebraic Topology
4.05
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