arXiv:0709.2798 [math.GT]AbstractReferencesReviewsResources
The twist subgroup of the mapping class group of a nonorientable surface
Published 2007-09-18Version 1
Let T(N) be the subgroup of the mapping class group of a nonorientable surface N (possibly with punctures and/or boundary components) generated by twists about two-sided circles. We obtain a simple generating set for T(N). As an application we compute the first homology group (abelianization) of T(N).
Journal: Osaka Journal of Mathematics 46/3 (2009), 717-738
Categories: math.GT
Keywords: mapping class group, nonorientable surface, twist subgroup, first homology group, boundary components
Tags: journal article
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