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math.GR2025
On commensurators of free groups and free pro-p groups
Yiftach Barnea, Mikhail Ershov, Adrien Le Boudec +3
We study the commensurators of free groups and free pro- groups, as well as certain subgroups of these. We prove that the commensurator of a non-abelian free group of…
math.GR2025★ 1 cited
Locally compact piecewise full groups of homeomorphisms
Alejandra Garrido, Colin D. Reid
We study when a piecewise full group (a.k.a. topological full group) of homeomorphisms of the Cantor space can be given a non-discrete totally disconnected locally compact (t.d…