Orateur: Matthias Nagel (McGill):
Titre:  Twisted Reidemeister torsion and the Thurston norm.
Résumé: I will explain how twisted Reidemeister torsion is able to recover the Thurston norm of an irreducible 3-manifold completely. As an application, we estimate the genus function of a circle bundle over such a 3-manifold.

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