bn:03552436n
Noun Concept
Categories: Measure theory
EN
sigma-ring  Sigma-ring of sets  Sigma ring  σ-ring
EN
In mathematics, a nonempty collection of sets is called a 𝜎-ring if it is closed under countable union and relative complementation. Wikipedia
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EN
In mathematics, a nonempty collection of sets is called a 𝜎-ring if it is closed under countable union and relative complementation. Wikipedia
Family closed under countable unions and relative complements Wikidata
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