{
  "id": "1103.5132",
  "version": "v2",
  "published": "2011-03-26T13:41:07.000Z",
  "updated": "2014-08-04T23:26:34.000Z",
  "title": "Orbifold techniques in degeneration formulas",
  "authors": [
    "Dan Abramovich",
    "Barbara Fantechi"
  ],
  "comment": "Some material which is now in arXiv:1406.2166 and in arXiv:1110.2976 was removed",
  "categories": [
    "math.AG",
    "math.SG"
  ],
  "abstract": "We give an approach for relative and degenerate Gromov--Witten invariants, inspired by that of Jun Li but replacing predeformable maps by transversal maps to a twisted target. The main advantage is a significant simplification in the definition of the obstruction theory. We reprove in our language the degeneration formula, extending it to the orbifold case.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2014-08-04T23:26:34.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "14N35",
      "14D22"
    ],
    "keywords": [
      "degeneration formula",
      "orbifold techniques",
      "degenerate gromov-witten invariants",
      "orbifold case",
      "transversal maps"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 894410,
      "adsabs": "2011arXiv1103.5132A"
    }
  }
}