{
  "id": "0804.0525",
  "version": "v3",
  "published": "2008-04-03T11:42:07.000Z",
  "updated": "2010-09-02T10:19:36.000Z",
  "title": "A special case of the $Γ_{00}$ conjecture",
  "authors": [
    "Samuel Grushevsky"
  ],
  "comment": "v2: References updated and corrected; v3: final version, stronger result statement (rank at most 2 instead or rank 1)",
  "categories": [
    "math.AG"
  ],
  "abstract": "In this paper we prove the $\\Gamma_{00}$ conjecture of van Geemen and van der Geer, under the additional assumption that the matrix of coefficients of the tangent has rank at most 2. This assumption is satisfied by Jacobians, and thus our result gives a characterization of the locus of Jacobians among all principally polarized abelian varieties. The proof is by reduction to the (stronger version of the) characterization of Jacobians by semidegenerate trisecants, i.e. by the existence of lines tangent to the Kummer variety at one point and intersecting it in another, proven by Krichever in the course of his proof of the Welters' trisecant conjecture.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2010-09-02T10:19:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "special case",
      "van der geer",
      "van geemen",
      "trisecant conjecture",
      "kummer variety"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2008arXiv0804.0525G"
    }
  }
}