Automorphisms of the Torelli complex and the complex of separating curves

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概要

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• We compute the automorphism groups of the Torelli complex and the complex of separating curves for all but finitely many compact orientable surfaces. As an application, we show that the abstract commensurators of the Torelli group and the Johnson kernel for such surfaces are naturally isomorphic to the extended mapping class group.

• 社団法人 日本数学会の論文

著者

• Kida Yoshikata

  Department Of Mathematics Kyoto University

関連論文

• Automorphisms of the Torelli complex and the complex of separating curves
• Automorphisms of the Torelli complex and the complex of separating curves
• Commensurators of surface braid groups
• Commensurators of surface braid groups

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