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Showing 2022 · math.GRShow all
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math.GR2022
On the space of subgroups of Baumslag-Solitar groups I: perfect kernel and phenotype
Alessandro Carderi, Damien Gaboriau, François Le Maître +1
Given a Baumslag-Solitar group, we study its space of subgroups from a topological and dynamical perspective. We first determine its perfect kernel (the largest closed subset witho…
math.GR2022
Class number for pseudo-Anosovs
François Dahmani, Mahan Mj
Given two automorphisms of a group , one is interested in knowing whether they are conjugate in the automorphism group of , or in the abstract commensurator of , and how t…
math.GR2022★ 2 cited
A Pansiot-type subword complexity theorem for automorphisms of free groups
Arnaud Hilion, Gilbert Levitt
Inspired by Pansiot's work on substitutions, we prove a similar theorem for automorphisms of a free group F of finite rank: if a right-infinite word X represents an attracting fixe…