Super approximation for $\text{SL}_2\times \text{SL}_2$ and $\text{ASL}_2$
Group Theory
2026-05-05 v5 Combinatorics
Dynamical Systems
Number Theory
Abstract
Let or be finite symmetric and assume generates a group which is a Zariski-dense subgroup or . We prove that the Cayley graphs form a family of expanders.
Cite
@article{arxiv.2308.09982,
title = {Super approximation for $\text{SL}_2\times \text{SL}_2$ and $\text{ASL}_2$},
author = {Jincheng Tang and Xin Zhang},
journal= {arXiv preprint arXiv:2308.09982},
year = {2026}
}
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