Date/heure
24 février 2015
14:00 - 15:00
Oratrice ou orateur
Son Lam Ho
Catégorie d'évènement Séminaire de géométrie différentielle
Résumé
This talk will describe various examples of surface groups in SO(4,1) in terms of fundamental domain of its action on S^3. This includes the first examples by Gromov-Lawson-Thurston, and new examples. We will also look at the quotient 3 manifolds which are circle bundles over closed surfaces and a proof of a soft bound on the Euler number of such circle bundles.