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arxiv: 1004.2946 · v4 · pith:DBPW4WHZnew · submitted 2010-04-17 · 🧮 math.GR · math.GT

Commensurators of surface braid groups

classification 🧮 math.GR math.GT
keywords surfacebraidgenusgrouporientableabstractboundaryclass
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We prove that if g and n are integers at least two, then the abstract commensurator of the braid group with n strands on a closed orientable surface of genus g is naturally isomorphic to the extended mapping class group of a compact orientable surface of genus g with n boundary components.

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