Sieve methods in group theory \Rmnum{3}: $\aut(F_n)$
arXiv:1106.4637
Abstract
Let $π:\aut(F_n)\rightarrow \aut(\Z^n)$ be the epimorphism induced by the isomorphism and define . We prove that the subset of consists of all non-iwip and all non-hyperbolic elements is exponentially small.
8 pages