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A congruence subgroup property for symmetric mapping class groups
Published 22 Aug 2024 in math.GT and math.GR | (2408.12486v1)
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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