Stefan Friedl: Exceptional 3-manifolds​

Abstract: We say a manifold M is exceptional if for any n all degree n covers of M are homeomorphic. For example closed surfaces and all tori are exceptional. We classify exceptional 3-manifolds.
This is based on joint work with Junghwan Park, Bram Petri and Aru Ray.

Recording during the thematic meeting "Geometry of Groups and 3-manifolds" the February 19, 2018 at the Centre International de Rencontres Mathématiques (Marseille, France)

Filmmaker: Guillaume Hennenfent

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