…The cardinality of all real numbers is denoted by א and is called the cardinality of the continuum. Cardinality is also called the cardinal number or aleph number. For two cards m and n , if there exist sets A and B such that m = Card A and n = Card B , and A ⊃ B , then m is said to be greater than or equal to n ( m ≧ n ). … *Some of the terminology explanations that mention "cardinal number" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…実数全体の濃度をまたはאで表し,連続または連続体の濃度という。濃度は,カージナル数cardinal number,またはアレフaleph数とも呼ばれる。 二つの濃度m,nに対し,m=CardA,n=CardB,A⊃Bである集合A,Bが存在するとき,mのほうがnより大きいか等しいという(m≧n)。… ※「cardinal number」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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