Automorphisms of the Hatcher-Thurston complex
classification
🧮 math.GT
math.GR
keywords
complexhatcher-thurstonautomorphismscenterclasscompactconnectedextended
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Let S be a compact, connected, orientable surface of positive genus. Let HT(S) be the Hatcher-Thurston complex of S. We prove that Aut(HT(S)) is isomorphic to the extended mapping class group of S modulo its center.
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