A. Golsefidy

activity

20112024

most citedExpansion in perfect groups

38 citations · 87 across the 12 of their papers we have counts for

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Showing 2018 · math.GRShow all

2 papers · 2 filters

math.GR2018

Diameter of homogeneous spaces: an effective account

Amir Mohammadi, Alireza Salehi Golsefidy, François Thilmany

In this paper we prove explicit estimates for the size of small lifts of points in homogeneous spaces. Our estimates are polynomially effective in the volume of the space and the i…

math.GR2018

Inducing Super-Approximation

Alireza Salehi Golsefidy, Xin Zhang

Let $Γ_{2} \subseteq Γ_{1}$ be finitely generated subgroups of $GL_{n_{0}} (Z [1/ q_{0}])$ . For $i = 1$ or $2$ , let $G_{i}$ be the Zariski-closure of $Γ_{i}$ in $({\rm GL}_{n…