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G^3 = Geometric Group Theory on the Gulf Coast
November 8-10, 2002

Pensacola Beach, FL, USA

Organizers
Stephen Brick, Igor Mineyev, Mark Sapir, Guoliang Yu

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Measured laminations and group theory
by
Mladen Bestvina
University of Utah
Coauthors: Mark Feighn (Rutgers, Newark)

I will discuss an alternative point of view on some recent results of Zlil Sela, using measured laminations on 2-complexes. Through some examples I hope to explain what "rigid" and "solid" extensions of homomorphisms to free groups are, and also revisit an old example of Razborov showing why a 2-quantifier sentence over free groups cannot always be written as a 1-quantifier sentence.

Date received: October 12, 2002

Copyright © 2002 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 # cajt-09.