Unbounded asymmetry of stretch factors
arXiv:1405.0771 · doi:10.1016/j.crma.2014.09.007
Abstract
A result of Handel-Mosher guarantees that the ratio of logarithms of stretch factors of any fully irreducible automorphism of the free group and its inverse is bounded by a constant . In this short note we show that this constant cannot be chosen independent of .
2 pages