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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Bicorn ： ウィキペディア英語版 Bicorn :''For the hat, see Bicorne.'' :''For the mythical beast, see Bicorn (legendary creature).'' In geometry, the bicorn, also known as a cocked hat curve due to its resemblance to a bicorne, is a rational quartic curve defined by the equation :$y^2(a^2-x^2)=(x^2+2ay-a^2)^2.$ It has two cusps and is symmetric about the y-axis. ==History== In 1864, James Joseph Sylvester studied the curve :$y^4-xy^3-8xy^2+36x^2y+16x^2-27x^3=0$ in connection with the classification of quintic equations; he named the curve a bicorn because it has two cusps. This curve was further studied by Arthur Cayley in 1867. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bicorn」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.