{"author_url":"https://blog.hatena.ne.jp/myuon_myon/","blog_url":"https://myuon-myon.hatenablog.com/","type":"rich","image_url":null,"height":"190","blog_title":"Just $ A sandbox","url":"https://myuon-myon.hatenablog.com/entry/2016/05/15/195755","title":"variable-free type theory\u306e\u570f\u8ad6\u7684\u306a\u89e3\u91c8\u306b\u3064\u3044\u3066","width":"100%","provider_url":"https://hatena.blog","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmyuon-myon.hatenablog.com%2Fentry%2F2016%2F05%2F15%2F195755\" title=\"variable-free type theory\u306e\u570f\u8ad6\u7684\u306a\u89e3\u91c8\u306b\u3064\u3044\u3066 - Just $ A sandbox\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":[],"author_name":"myuon_myon","provider_name":"Hatena Blog","published":"2016-05-15 19:57:55","description":"myuon-myon.hatenablog.com \u306e\u7d9a\u304d. \u3044\u304f\u3064\u304b\u7591\u554f\u304c\u89e3\u6d88\u3055\u308c\u305f\u306e\u3067\u305d\u308c\u306b\u3064\u3044\u3066. var-free type theory\u306b\u3064\u3044\u3066 syntax\u306fcontext, type, term, subst\u304b\u3089\u306a\u308b. context\u306ftype\u306e\u6709\u9650\u5217(\u901a\u5e38\u306fvariable\u3068\u305d\u306etype\u306e\u7d44\u306e\u5217\u3060\u304c, \u4eca\u56de\u306fvariable-free\u306a\u306e\u3067type\u3060\u3051\u306e\u5217\u306b\u306a\u308b). type\u306fground type\u3068\u95a2\u6570\u578bA \u2192 B\u3068subst\u304c\u4ee3\u5165\u3055\u308c\u305f\u578b(\u03c3[s]\u306e\u5f62\u3092\u3057\u3066\u3044\u308b\u3082\u306e)\u306e\u3044\u305a\u308c\u304b. term\u306f1\u3068\u4ee3\u5165\u3055\u308c\u305f\u9805M[s]\u306e\u3044\u305a\u308c\u304b. subst\u306fid\u3068\u5408\u6210f . g\u3068shift\u2191\u2026"}