...When considering intersections, unions, etc., it is sometimes useful to represent sets symbolically, as in the figure below. Such a diagram is called a Venn diagram or J.Ven diagram. When A is a subset of a set M , { x ∈ M | x ∉ A } is called the complement of A in M , and is often represented by symbols such as A c , M ― A , M ╲ A , and Ā. ... *Some of the terminology explanations that mention "Ven, J." are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…共通部分,合併集合などを考えるとき,図のように集合を象徴的に表すと便利なことがある。このような図をベン図またはベンJ.Venの図式という。 Aが集合Mの部分集合であるとき,{x∈M|x∉A}をAのMにおける補集合といい,Ac,M―A,M╲A,Āなどの記号で表されることが多い。… ※「Ven,J.」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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