Thierry Coulbois, Martin Lustig
Published 2015-06-15Version 1
The goal of this paper is to introduce a new tool, called {\em long turns}, which is a useful addition to the train track technology for automorphisms of free groups, in that it allows one to control periodic INPs in a train track map and hence the index of the induced automorphism.
Free group automorphisms, Train tracks, Index realization, Gate structure
Growth of intersection numbers for free group automorphisms
The Subadditive Ergodic Theorem and generic stretching factors for free group automorphisms
![QR code for arXiv:1506.04532 [math.GR]](http://oss.arxitics.com/images/favicon.svg)