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math.GR2009
Bianchi groups are conjugacy separable
S. C. Chagas, P. A. Zalesskii
We prove that non-uniform arithmetic lattices of and in particular the Bianchi groups are conjugacy separable. The proof based on recent deep results of Agol, Lo…
math.GR2009★ 16 cited
The congruence subgroup problem for branch groups
Laurent Bartholdi, Olivier Siegenthaler, Pavel Zalesskii
We state and study the congruence subgroup problem for groups acting on rooted tree, and for branch groups in particular. The problem is reduced to the computation of the congruenc…