|
In geometry, Dini's surface is a surface with constant negative curvature that can be created by twisting a pseudosphere.〔(【引用サイトリンク】 Wolfram Mathworld: Dini's Surface )〕 It is named after Ulisse Dini and described by the following parametric equations:〔(【引用サイトリンク】 Knol: Dini's Surface (geometry) )〕 : : : Another description is a helicoid constructed from the tractrix. == Uses == Renditions of Dini's surface have appeared on the covers of Western Kentucky University's ''Graduate Study in Mathematics'', Gray's ''Modern Differential Geometry of Curves and Surfaces with Mathematica'' (2nd Edition), and in La Gaceta de la Real Sociedad Matemática Española (The Gazette of the Royal Spanish Mathematical Society), Vol. 2 (3). 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「Dini's surface」の詳細全文を読む スポンサード リンク
|