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Combinatorial and Geometric Group Theory
May 5-10, 2006
Vanderbilt University
Nashville, TN, USA

Organizers
Goulnara Arzhantseva, Mike Mihalik, Denis Osin, Mark Sapir, Efim Zelmanov

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Splitting and CAT(0) superrigidity for lattices in products
by
Nicolas Monod
University of Geneva

CAT(0) spaces generalize notably symmetric spaces and Bruhat-Tits buildings. Therefore, one can reformulate Margulis' superrigidity theorem in terms of actions on CAT(0) spaces.

We propose such a generalization for irreducible lattices in products. The proof uses a general Lawson-Yau/Gromoll-Wolf splitting theorem.

Date received: March 2, 2006

Copyright © 2006 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # caqu-70.