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math.GR2005★ 1 cited
Abstract commensurators of braid groups
Christopher J. Leininger, Dan Margalit
Let B_n be the braid group on n strands, with n at least 4, and let Mod(S) be the extended mapping class group of the sphere with n+1 punctures. We show that the abstract commensur…
math.GR2005★ 3 cited
Injections of Artin groups
Robert W. Bell, Dan Margalit
We study those Artin groups which, modulo their centers, are finite index subgroups of the mapping class group of a sphere with at least 5 punctures. In particular, we show that an…