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出典:Wiktionary
equi- + numerosity
equinumerosity (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/02/03 11:39 UTC 版)
In mathematics, two sets are equinumerous if they have the same cardinality, i.e., if there exists a bijection f : A → B for sets A and B. This is usually denoted or .
Equinumerosity