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bn:00640192n
Noun Concept
Categories: Axiom of choice, Basic concepts in set theory
EN
choice function  selection function
EN
A choice function is a mathematical function f that is defined on some collection X of nonempty sets and assigns some element of each set S in that collection to S by f; f maps S to some element of S. In other words, f is a choice function for X if and only if it belongs to the direct product of X. Wikipedia
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EN
A choice function is a mathematical function f that is defined on some collection X of nonempty sets and assigns some element of each set S in that collection to S by f; f maps S to some element of S. In other words, f is a choice function for X if and only if it belongs to the direct product of X. Wikipedia
A function whose domain is a family of nonempty sets, and which selects a member from each of those sets as its value. Wiktionary
Wikipedia
EN
choice function
Wikidata
EN
choice function
Wiktionary
EN
choice function
Wikipedia Redirections
EN
selection function

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