Sigma additivity

In mathematics, additivity and sigma additivity (also called countable additivity) of a function defined on subsets of a given set are abstractions of the intuitive properties of size (length, area, volume) of a set.

单词	Finite additivity
释义	Finite additivity 英语百科 Sigma additivity In mathematics, additivity and sigma additivity (also called countable additivity) of a function defined on subsets of a given set are abstractions of the intuitive properties of size (length, area, volume) of a set.
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Finite additivity

Sigma additivity