Séminaire - Avril
Le séminaire aura lieu un mercredi par mois de 14h à 15h à l'Institut Henri Poincaré à Paris. Pour télécharger le programme du mois: avril.pdf.
- 05/04/2017 - Howard Masur (University of Chicago) - salle 421
Titre: Quasi-isometric rigidity of Teichmuller space
Résumé:
The notion of quasi-isometry was introduced by Gromov to study the
coarse geometry of groups and metric spaces. It has proved useful in
different contexts: for example in Mostow rigidity. Here we study
quasi-isometries of Teichmuller space with the Teichmuller metric to
itself and show that any quasi-isometry is bounded distance from an
isometry. This is joint with Alex Eskin and Kasra Rafi.