Small index subgroups of the mapping class group

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We prove that the mapping class group of a closed oriented surface of genus $ρ\ge 3$ has no proper subgroup of index $\le 4 ρ+4$.

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Geometric Topology, Group Theory, 57M99

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http://salesiana.dossiersoluciones.com/handle/123456789/144152

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0712.2153
 http://arxiv.org/abs/0712.2153

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arXiv