{
  "id": "1506.04532",
  "version": "v1",
  "published": "2015-06-15T09:43:32.000Z",
  "updated": "2015-06-15T09:43:32.000Z",
  "title": "Long turns, INP's and index for free group automorphisms",
  "authors": [
    "Thierry Coulbois",
    "Martin Lustig"
  ],
  "comment": "25 pages",
  "categories": [
    "math.GR"
  ],
  "abstract": "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.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-06-15T09:43:32.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "20E05",
      "20E08",
      "20F65",
      "57R30"
    ],
    "keywords": [
      "free group automorphisms",
      "long turns",
      "train track technology",
      "control periodic inps",
      "train track map"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 25,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015arXiv150604532C"
    }
  }
}