{
  "id": "msc_code",
  "name": "Mathematics Subject Classification (MSC) code",
  "status": "draft",
  "doc": "Class code of the Mathematics Subject Classification, produced by Mathematical Reviews (MathSciNet) and zbMATH Open and used by mathematics journals to classify articles. A code has two digits for the area, a letter for the second level and two digits for the third level, such as 81Q50 for quantum chaos. Codes that end in xx name a whole second-level class, such as 68Txx, and codes of the form 05-XX a whole area. The current edition is MSC2020. The regexp is the Wikidata format of property P3285; it does not accept a bare two-digit area.",
  "categories": [
    {
      "id": "science",
      "name": "Scientific"
    },
    {
      "id": "publishing",
      "name": "Publishing and print"
    }
  ],
  "langs": [
    {
      "id": "common",
      "name": "Common to most languages"
    }
  ],
  "is_pii": false,
  "classification": "categorical",
  "regexp": "^\\d{2}(?:-(?:XX|\\d{2})|[A-Z](?:xx|\\d{2}))$",
  "examples": [
    {
      "value": "81Q50",
      "description": "Quantum chaos"
    },
    {
      "value": "68Txx",
      "description": "Artificial intelligence"
    },
    {
      "value": "81Q5",
      "valid": false,
      "description": "The third level has two digits"
    }
  ],
  "mappings": {
    "wikidata": "P3285"
  },
  "links": [
    {
      "type": "wikipedia",
      "url": "https://en.wikipedia.org/wiki/Mathematics_Subject_Classification"
    },
    {
      "type": "wikidata",
      "url": "https://www.wikidata.org/wiki/Property:P3285"
    },
    {
      "type": "doc",
      "url": "https://msc2020.org/"
    }
  ],
  "translations": {
    "ru": {
      "name": "Код Математической предметной классификации (MSC)",
      "doc": "Код рубрики классификации MSC, которую используют MathSciNet, zbMATH и математические журналы."
    }
  },
  "type": "datatype",
  "wikidata_property": "P3285"
}