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Séminaire de Géométrie

Automorphisms and abstract commensurators of subgroups of the mapping class group

Juan SOUTO

( Rennes 1 )

Salle 2

le 22 novembre 2013 à 10:45

I will discuss the abstract commensurators of subgroups of the mapping class group such as for example the Torelli group (the subgroup consisting of those elements acting trivially on the homology of the surface), the Johnson kernels, or the kernels of quantum representations.