{"description":"\u5168\u4f53\u96c6\u5408 S \u5185\u306b\u90e8\u5206\u96c6\u5408 A \u3068 B \u304c\u3042\u308b\u3068\u304d\uff0c A\u2229B \u306b\u7b49\u3057\u3044\u3082\u306e\u306f\u3069\u308c\u304b\u3002 _ \u3053\u3053\u3067\uff0cA\u222aB \u306f A \u3068 B \u306e\u548c\u96c6\u5408\uff0cA\u2229B \u306f A \u3068 B \u306e\u7a4d\u96c6\u5408\uff0cA \u306f S \u306b\u304a\u3051\u308b A \u306e\u88dc\u96c6\u5408\uff0cA - B \u306f A \u304b\u3089 B \u3092\u9664\u3044\u305f\u5dee\u96c6\u5408\u3092\u8868\u3059\u3002 _ _ \u30a2 (A\u222aB) - (A\u2229B) \u30a4 (S - A) \u222a (S - B) _ \u30a6 A - B \u30a8 S - (A\u2229B)\u89e3\u7b54\uff1a\u30a4 \u6b63\u89e3\uff1a\u30a6 \u554f\u984c\u9593\u9055\u3044\u30b8\u30e3\u30de\u30a4\u30ab","provider_url":"https://hatena.blog","categories":["\u5bbf\u984c\uff1a\u57fa\u672c\u60c5\u5831\u30fb\u30bd\u30d5\u958b\u5411\u3051"],"provider_name":"Hatena Blog","author_name":"s82sakurai","author_url":"https://blog.hatena.ne.jp/s82sakurai/","blog_title":"(\u201d\uff40\u0434\u00b4)\u309e\u3055","height":"190","blog_url":"https://s82sakurai.hatenadiary.org/","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fs82sakurai.hatenadiary.org%2Fentry%2F20060921%2Fp1\" title=\"\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u79d1\u5b66\u57fa\u790e\u7279\u96c6 - (\u201d\uff40\u0434\u00b4)\u309e\u3055\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2006-09-21 00:00:00","image_url":null,"title":"\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u79d1\u5b66\u57fa\u790e\u7279\u96c6","type":"rich","url":"https://s82sakurai.hatenadiary.org/entry/20060921/p1","width":"100%"}