Concept information
Terme préférentiel
countable set
Définition
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In mathematics, a set is countable if either it is finite or it can be made in one to one correspondence with the set of natural numbers. Equivalently, a set is countable if there exists an injective function from it into the natural numbers; this means that each element in the set may be associated to a unique natural number, or that the elements of the set can be counted one at a time, although the counting may never finish due to an infinite number of elements.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Countable_set)
Concept générique
Traductions
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français
URI
http://data.loterre.fr/ark:/67375/PSR-H6C9KX4G-9
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