{
  "aliases": [
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    "borel-sets"
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  "body": "\n## Summary\n\nThe Borel σ-algebra of a topological space is the smallest σ-algebra that contains all open sets. Its elements are the Borel sets.\nOn the real line it is the usual family of events for real random variables. The node [[Borel sigma-algebra|0BVHZXWKCD]] gives the precise definition.\n",
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  "name": "Borel sigma-algebra",
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