Conjugacy Problem for Dehn Twists of Free Products of Free Abelian Groups
We show solubility of the conjugacy problem for Dehn twist automorphisms of finitely generated free products of free abelian groups.
math.GR↗
arXiv subjects
Amir Y. Weiss Behar
Publications and source records attributed to Amir Y. Weiss Behar.
Self-similarity of p-adic groups
We show that a compact open subgroup $H$ of a simple algebraic $p$-adic group $G$ is self-similar if and only if it is isotropic.
math.GR↗
Profinite non-rigidity of arithmetic groups
We show that for a typical high rank arithmetic lattice $Γ$, there exist finite index subgroups $Γ_{1}$ and $Γ_{2}$ such that $Γ_{1} \not\simeq Γ_{2}$ while $\widehat{Γ_{1}} \simeq \widehat{Γ_{2}}$. But there are exceptions to that rule.
math.GR↗