Seminario Teoría de grupos UAM-ICMAT

CONSTRUCTING GROUP ACTIONS IN QUASI-TREES

Ken Bromberg (Utah)

Martes 25 de abril de 2017 – 14:30 h

Aula 520, Módulo 17, Facultad de Ciencias, 
UAM (Campus de Cantoblanco, Madrid)

Resumen: In joint work with M. Bestvina and K. Fujiwara we described an 
axiomatic approach to construct group actions on quasi-trees. The 
construction is very general and works for a wide class of groups that 
have some form of hyperbolic behavior. The original proof was quite 
technical. In new work, joint with Bestvina, Fujiwara and A. Sisto we 
have a much simpler approach that also produces acylindrical actions. We 
will describe this work.