翻訳と辞書 Words near each other ・ Infinity mirror ・ Infinity on High ・ Infinity Online ・ Infinity Overhead ・ Infinity Park ・ Infinity plus one ・ Infinity Power Chutes ・ Infinity Property & Casualty Corporation ・ Infinity Purple ・ Infinity Recordings ・ Infinity Records ・ Infinity Ring ・ Infinity Rock Explosion! ・ Infinity Science Fiction ・ Infinity Studios ・ Infinity symbol ・ Infinity Tower (Brisbane) ・ Infinity transmitter ・ Infinity TV ・ Infinity Walk ・ Infinity War ・ Infinity Ward ・ Infinity Watch ・ Infinity Within ・ Infinity's Shore ・ Infinity, Inc. ・ Infinity-Borel set ・ Infinity-Man ・ InfinityDB ・ InFiné Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Infinity symbol ： ウィキペディア英語版 Infinity symbol The infinity symbol (sometimes called the lemniscate) is a mathematical symbol representing the concept of infinity. ==History== The shape of a sideways figure eight has a long pedigree; for instance, it appears in the cross of Saint Boniface, wrapped around the bars of a Latin cross. However, John Wallis is credited with introducing the infinity symbol with its mathematical meaning in 1655, in his ''De sectionibus conicis''.〔 See e.g. Prop. 1, p. 4.〕〔 Wallis did not explain his choice of this symbol, but it has been conjectured to be a variant form of a Roman numeral for 1,000 (originally CIƆ, also CƆ), which was sometimes used to mean "many", or of the Greek letter ω (omega), the last letter in the Greek alphabet. Leonhard Euler used an open variant of the symbol〔 See for instance Cor. 1 p. 174 in: Leonhard Euler. Variae observationes circa series infinitas. Commentarii academiae scientiarum Petropolitanae 9, 1744, pp. 160-188. ()〕 in order to denote "absolutus infinitus". Euler freely performed various operations on infinity, such as taking its logarithm. This symbol is not used anymore, and does not exist in Unicode. 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「Infinity symbol」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.