{
  "id": "1608.04483",
  "version": "v1",
  "published": "2016-08-16T05:03:59.000Z",
  "updated": "2016-08-16T05:03:59.000Z",
  "title": "Cohomological invariants for G-Galois algebras and self-dual normal bases",
  "authors": [
    "Eva Bayer-Fluckiger",
    "Raman Parimala"
  ],
  "categories": [
    "math.NT"
  ],
  "abstract": "We define degree two cohomological invariants for G-Galois algebras over fields of characteristic not 2, and use them to give necessary conditions for the existence of a self--dual normal basis. In some cases, we show that these conditions are also sufficient.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-08-16T05:03:59.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "self-dual normal basis",
      "g-galois algebras",
      "cohomological invariants",
      "define degree",
      "necessary conditions"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}