{
  "@context": "https://schema.org",
  "@type": "TechArticle",
  "@id": "https://anchorfact.org/kb/kb-2026-00192",
  "headline": "Set Theory",
  "description": "Set theory (Georg Cantor, 1874) is the language of mathematics — almost all mathematical objects can be defined as sets. A set is a collection of distinct objects. Operations: union (∪), intersection (∩), difference (−), complement. Used in: databases (SQL JOINs), type theory, probability.",
  "dateCreated": "2026-05-22T14:59:47.663Z",
  "dateModified": "2026-05-22T14:59:47.663Z",
  "author": {
    "@type": "Organization",
    "name": "AnchorFact"
  },
  "publisher": {
    "@type": "Organization",
    "name": "AnchorFact",
    "url": "https://anchorfact.org"
  },
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "anchorfact:confidence": "high",
  "anchorfact:generationMethod": "human_only",
  "citation": []
}