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lemniscate
In algebraic geometry, a lemniscate is any of several figure-eight or -shaped curves.〔〔 The word comes from the Latin "lēmniscātus" meaning "decorated with ribbons", which in turn may come from the ancient Greek island of Lemnos where ribbons were worn as decorations,〔.〕 or alternatively may refer to the wool from which the ribbons were made.〔 ==History and examples==
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「lemniscate」の詳細全文を読む
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