{
  "id": "1310.3250",
  "version": "v1",
  "published": "2013-10-11T19:17:41.000Z",
  "updated": "2013-10-11T19:17:41.000Z",
  "title": "$Σ^1_2$ and $Π^1_1$ mad families",
  "authors": [
    "Asger Törnquist"
  ],
  "comment": "This will appear in the Journal of Symbolic Logic (March 2014)",
  "categories": [
    "math.LO"
  ],
  "abstract": "We answer in the affirmative the following question of J\\\"org Brendle: If there is a $\\Sigma^1_2$ mad family, is there then a $\\Pi^1_1$ mad family?",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-10-11T19:17:41.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03E15"
    ],
    "keywords": [
      "mad family"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013arXiv1310.3250T"
    }
  }
}