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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