{
  "id": "1104.1681",
  "version": "v1",
  "published": "2011-04-09T07:20:11.000Z",
  "updated": "2011-04-09T07:20:11.000Z",
  "title": "Polish group actions and effectivity",
  "authors": [
    "Barbara Majcher-Iwanow"
  ],
  "comment": "10 pages",
  "categories": [
    "math.LO"
  ],
  "abstract": "We extend the result of Nadel describing the relationship between approximations of canonical Scott sentences and admissible sets to the general case of orbit equivalence relations induced on an arbitrary Polish space by a Polish group action.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-04-09T07:20:11.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03E15",
      "03C70"
    ],
    "keywords": [
      "polish group action",
      "effectivity",
      "arbitrary polish space",
      "canonical scott sentences",
      "orbit equivalence relations"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011arXiv1104.1681M"
    }
  }
}