Topology Date:  Thursday, December 06, 2012 Location:  3866 East Hall (3:00 PM to 4:00 PM) Title:  The median class for groups acting on CAT(0) cube complexes Abstract:   I will discuss bounded cohomology, as well as CAT(0) cube complexes. For a non-elementary action on a CAT(0) cube complex, we construct a cohomology class that we call median class, and prove the non-vanishing of it. We apply this result to establish a super-rigidity result. This is joint work with T. Fernos and A. Iozzi, and this talk will be accessible to non-specialists. Speaker:  Indira Chatterji Institution:  Université d`Orléans Event Organizer:        Edit this event (login required). Add new event (login required). For access requests and instructions, contact math-webmaster@umich.edu Back to previous page Back to UM Math seminars/events page.