Boundaries in Geometric Group Theory

June 13 to June 17, 2005

at the

American Institute of Mathematics, Palo Alto, California

organized by

Misha Kapovich and Bruce Kleiner

This workshop, sponsored by AIM and the NSF, will serve to facilitate discussions on various aspects of boundaries of groups. A variety of different constructions of boundaries at infinity have long played an important role in geometric group theory and related areas such as Kleinian groups, rigidity theory for lattices, 3-manifolds, and nonpositive curvature. In the last 7 years, there has been particularly intense progress on boundaries, especially boundaries of hyperbolic groups and CAT(0) groups. For example:

The principal goal of the workshop is to bring together people working on this topic so as to foster further research. There will be several survey lectures to help participants take stock of all the new developments, and disseminate ideas across customary barriers (expose the more analytic ideas to topologists, and topological ideas to analysts, etc).

The workshop will differ from typical conferences in some regards. Participants will be invited to suggest open problems and questions before the workshop begins, and these will be posted on the workshop website. These include specific problems on which there is hope of making some progress during the workshop, as well as more ambitious problems which may influence the future activity of the field. Lectures at the workshop will be focused on familiarizing the participants with the background material leading up to specific problems, and the schedule will include discussion and working sessions.

Participants include U. Bader, A. Barnhill, N. Benakli, M. Bestvina, M. Bonk, M. Bourdon, I. Bumagin, D. Calegari, M. Davis, T. Delzant, C. Drutu Badea, T. Dymarz, D. Fisher, W. Floyd, R. Geoghegan, D. Groves, J. Heinonen, M. Hindawi, T. Januszkiewicz, M. Kapovich, I. Kapovich, A. Karlsson, S. Keith, B. Kleiner, D. Osajda, P. Papasoglou, K. Ruane, E. Swenson, J. Tyson, K. Whyte, J. Wilson, X. Xie, and A. Yaman.

The deadline to apply for support to participate in this workshop has passed.

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