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EntityQ4049983· pop 57· linked from 797 articles

Also known as size, number of elements, cardinality of a set, set cardinality, size of a set

집합의 '원소의 수'를 나타내는 기수

AI overview

Cardinality is a mathematical property that describes how many individual objects are in a set, whether that number is finite or infinite. It's determined by checking if the objects in two sets can be paired up perfectly—if every object in one set matches with exactly one object in another set with nothing left over, then the sets have the same cardinality.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

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Commons category
Cardinality
notation
number sign
studied by
set theory
name
cardinality
invariant under
bijection
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