{"height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyosh.hateblo.jp%2Fentry%2F20091023%2Fp11\" title=\" \u76f4\u89b3\u4e3b\u7fa9\u8ad6\u7406\u3067\u306e\u4e8c\u91cd\u5426\u5b9a\u9664\u53bb\u3068\u6392\u4e2d\u5f8b\u306e\u540c\u5024\u6027 - \u306b\u308f\u3068\u308a\u5c0f\u5c4b\u3067\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":" \u76f4\u89b3\u4e3b\u7fa9\u8ad6\u7406\u3067\u306e\u4e8c\u91cd\u5426\u5b9a\u9664\u53bb\u3068\u6392\u4e2d\u5f8b\u306e\u540c\u5024\u6027","published":"2009-10-23 00:00:10","author_name":"yoshihiro503","url":"https://yosh.hateblo.jp/entry/20091023/p11","blog_title":"\u306b\u308f\u3068\u308a\u5c0f\u5c4b\u3067\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","type":"rich","width":"100%","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/yoshihiro503/","description":"\u540c\u5024\u6027\u3092\u793a\u3059\u305f\u3081\u306b\u305d\u308c\u305e\u308c\u306e\u77e2\u5370\u3092\u793a\u3057\u305f\u3002\u8ad6\u7406\u30d1\u30ba\u30eb\u307f\u305f\u3044\u306a\u554f\u984c\u3060\u304c\u3001\u00ac\u3092\u6271\u3046\u3044\u3044\u7df4\u7fd2\u554f\u984c\u3060\u3068\u601d\u3046\u3002 Lemma p10_left : (forall A, ~~A -> A) -> (forall A B, (~B -> ~A) -> (A -> B)). Proof. intros. apply H. intro. elim (H0 H2). apply H1. Qed. Lemma p10_right : (forall A B, (~B -> ~A) -> (A -> B)) -> (forall A, ~~A -> A). Proof. intros. apply (H True A\u2026","blog_url":"https://yosh.hateblo.jp/","provider_name":"Hatena Blog","image_url":null,"version":"1.0","categories":[]}