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Ancient solution : ウィキペディア英語版 | Ancient solution In mathematics, an ancient solution to a differential equation is a solution that can be extrapolated backwards to all past times, without singularities. That is, it is a solution "that is defined on a time interval of the form ."〔 The term was introduced in Grigori Perelman's research on the Ricci flow,〔.〕 and has since been applied to other geometric flows〔.〕〔.〕〔.〕〔.〕 as well as to other systems such as the Navier–Stokes equations〔.〕〔.〕 and heat equation.〔.〕 ==References==
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「Ancient solution」の詳細全文を読む
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