A congruence subgroup property for symmetric mapping class groups

Marco Boggi

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arXiv · 2408.12486

A congruence subgroup property for symmetric mapping class groups

Marco Boggi

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Abstract

We prove the congruence subgroup property for the centralizer of a finite subgroup $G$ in the mapping class group of a hyperbolic oriented and connected surface of finite topological type $S$ such that the genus of the quotient surface $S/G$ is at most $2$. As an application, we show that torsion elements in the mapping class group of a surface of genus $\leq 2$ are conjugacy distinguished.

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Marco Boggi. 2024-08-22. A congruence subgroup property for symmetric mapping class groups. https://arxiv.org/abs/2408.12486

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