bn:08530638n
Noun Named Entity
Categories: Topology, Descriptive set theory
EN
Borel set  Borel field  Borel-measurable set  Borel \sigma-algebra  Borel algebra
EN
In mathematics, a Borel set is any set in a topological space that can be formed from open sets through the operations of countable union, countable intersection, and relative complement. Wikipedia
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EN
In mathematics, a Borel set is any set in a topological space that can be formed from open sets through the operations of countable union, countable intersection, and relative complement. Wikipedia
set that can be constructed from open or closed sets by repeatedly taking countable unions and intersections Wikidata
Set that can be constructed from open or closed sets by repeatedly taking countable unions and intersections Wikidata