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Free-by-cyclic groups and trees

Presented by: 
Christopher Leininger University of Illinois at Chicago
Friday 23rd June 2017 - 11:30 to 12:30
INI Seminar Room 1
Given a hyperbolic free-by-cyclic group G, I will explain how to assign an action of G on a topological R-tree T_U for certain components U of the BNS invariant.   For every element x in U, there is a metric on T_U so that G acts by homotheties and the kernel of x acts by isometries.  This is part of ongoing joint work with Spencer Dowdall and  Ilya Kapovich.
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons