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Speaker:
Ilya Kapovich
Affiliation:
UIUC/MPI
Date:
Mon, 29/11/2010 - 15:00 - 16:00
Location:
MPIM Lecture Hall
Parent event:
Topics in Topology We prove that if T is an $\mathbf R$-tree equipped with a minimal free isometric action of $F_N$ then the $Out(F_N)$-stabilizer of the projective class [T] of [T] is virtually cyclic. As an application, we obtain a new proof of the Tits Alternative for "dynamically large" subgroups of $Out(F_N)$. The talk is based on joint work with Martin Lustig.
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