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Automorphisms of the Hatcher-Thurston complex

2007-12-01
Irmak, Elmas
Korkmaz, Mustafa
Let S be a compact, connected, orientable surface of positive genus. Let HT(S) be the Hatcher-Thurston complex of S. We prove that Ant HT(S) is isomorphic to the extended mapping class group of S modulo its center.