Sigma-algebra

In mathematical analysis and in probability theory, a σ-algebra (also sigma-algebra, σ-field, sigma-field) on a set X is a collection Σ of subsets of X that includes the empty subset, is closed under complement, and is closed under union or intersection of infinitely-countably many subsets. The pair (X, Σ) is called a measurable space.

单词	Sigma algebra
释义	Sigma algebra 原声例句可汗学院：统计学（视频版） And now we're just going to do some algebra, some sigma algebra I guess you could call it. 现在我们要做一些代数，一些 sigma 代数，我想你可以称之为。英语百科 Sigma-algebra In mathematical analysis and in probability theory, a σ-algebra (also sigma-algebra, σ-field, sigma-field) on a set X is a collection Σ of subsets of X that includes the empty subset, is closed under complement, and is closed under union or intersection of infinitely-countably many subsets. The pair (X, Σ) is called a measurable space.
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Sigma algebra

Sigma-algebra