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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 imaginary curve ： ウィキペディア英語版 imaginary curve In algebraic geometry an imaginary curve is an algebraic curve which does not contain any real points.〔.〕 For example, the set of pairs of complex numbers $(x,y)$ satisfying the equation $x^2+y^2=-1$ forms an imaginary circle, containing points such as $(i,0)$ and $(\backslash frac,\backslash frac)$ but not containing any points both of whose coordinates are real. In some cases, more generally, an algebraic curve with only finitely many real points is considered to be an imaginary curve. For instance, an imaginary line is a line (in a complex projective space) that contains only one real point.〔.〕 ==See also== *Imaginary point *Real line *Real curve 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「imaginary curve」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.