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Trident curve : ウィキペディア英語版 | Trident curve In mathematics, a trident curve (also trident of Newton or parabola of Descartes) is any member of the family of curves that have the formula: : Trident curves are cubic plane curves with an ordinary double point in the real projective plane at ''x'' = 0, ''y'' = 1, ''z'' = 0; if we substitute ''x'' = ''x''/''z'' and ''y'' = 1/''z'' into the equation of the trident curve, we get : which has an ordinary double point at the origin. Trident curves are therefore rational plane algebraic curves of genus zero. ==References==
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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「Trident curve」の詳細全文を読む
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