Yan Mary He (University of Oklahoma, USA) "Nielsen realization for some big mapping class groups "

math Séminaires Séminaire « Géométrie dynamique »

Abstract: In this talk, we show that most compactly supported big mapping class groups cannot be realized as a subgroup of the homeomorphism group. Time permitting, we will also prove the non-realizability of the mapping class group of the plane minus a Cantor set or the sphere minus a Cantor set. This is joint work with Lei Chen.

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