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set theory > cardinality > cardinal number

Preferred term

cardinal number  

Definition

  • In mathematics, a cardinal number, or cardinal for short, is what is commonly called the number of elements of a set. In the case of a finite set, its cardinal number, or cardinality is therefore a natural number. For dealing with the case of infinite sets, the infinite cardinal numbers have been introduced, which are often denoted with the Hebrew letter ℵ (aleph) marked with subscript indicating their rank among the infinite cardinals.
    (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Cardinal_number)

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Entry terms

  • cardinal

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URI

http://data.loterre.fr/ark:/67375/PSR-LBCD5LW1-Z

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