{"description":"Def $G$ \u304c\u53ef\u89e3\u7fa4\u3067\u3042\u308b\u3068\u306f\u3001\u30d5\u30a3\u30eb\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3 $G = G_0 \\supset G_1 \\supset \\cdots \\supset G_{r-1} \\supset G_r = \\{e\\}$ \u3092\u6301\u3061\u3001\u3053\u308c\u304c $G_{i-1} \\triangleright G_i$ \u3092\u6e80\u305f\u3057\u3001 $G_{i-1}/G_i$ \u304cAbel\u7fa4\u306b\u306a\u308b\u6642\u3092\u8a00\u3046${}_\\square$ \u4f8b (1)$S_3$ \u306f\u53ef\u89e3\u7fa4\u3067\u3042\u308b\u3002 \u2192 $S_3 \\supset A_3 \\supset \\{e\\}$ \u306a\u308b\u30d5\u30a3\u30eb\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001 $\\#(S_3/A_3) = \\# \\{e,\\overline{(1\\ 2)}\\} = 2\u2026","title":"Galois\u7406\u8ad6(71)\u2015\u51aa\u6839\u306b\u3088\u308b\u53ef\u89e3\u6027(3)","width":"100%","height":"190","image_url":null,"author_url":"https://blog.hatena.ne.jp/derwind/","blog_title":"\u3089\u3093\u3060\u3080\u306a\u8a18\u61b6","blog_url":"https://randommemory.hatenablog.com/","version":"1.0","url":"https://randommemory.hatenablog.com/entry/2016/10/23/012903","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frandommemory.hatenablog.com%2Fentry%2F2016%2F10%2F23%2F012903\" title=\"Galois\u7406\u8ad6(71)\u2015\u51aa\u6839\u306b\u3088\u308b\u53ef\u89e3\u6027(3) - \u3089\u3093\u3060\u3080\u306a\u8a18\u61b6\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2016-10-23 01:29:03","categories":["math-alg"],"provider_name":"Hatena Blog","provider_url":"https://hatena.blog","type":"rich","author_name":"derwind"}