3.30 p.m. The complex of HNN-extensions for free groups of rank n Suhas J Pandit ICTP, Trieste, Italy. 23-01-13 Abstract In this talk, we shall discuss the complex of HNN - extensions for free groups of finite rank. We shall sketch a proof the following result " The group of simplicial automorphisms of this complex is isomorphic to the group Out(F_n) of outer automorphisms of the free group F_n of rank n.
|