Thurston norm and L2-Betti numbers (Gerrit Herrmann, University of Regensburg)

23.11.2017 14:15

In my talk I will define the Thurston norm of a closed irreducible 3-manifold M. This is a semi-norm on the second homology H2(M;Z). Morally speaking it measures the complexity of a class by embedded surfaces representing this class. I will then characterize embeddings of surfaces which release the Thurston norm by certain L2-Betti numbers.

Lieu

Room 17, Séminaire de Topologie et Géométrie

Organisé par

Section de mathématiques

Intervenant-e-s

Gerrit Herrmann, University of Regensburg

entrée libre

Classement

Catégorie: Séminaire