|
Jehan Adam was a French mathematician who flourished in the 15th century. He was secretary to Nicholle Tilhart, who was notary, secretary and auditor of accounts to King Louis XI of France. He published a manuscript in 1475〔Bibliothèque St Geneviève, Paris, MS Français 3143 - original French manuscript by Jehan Adam〕〔(Jehan Adam, Traicté en arismetique pour la practique par gectouers… Parchemin. XVe siècle (1475). ) 〕〔Lynn Thorndike, "The Arithmetic of Jehan Adam, A.D. 1475," Science and Thought in the Fifteenth Century〕 containing the first use of the terms ''bymillion'' and ''trimillion'', which gave rise to the modern terms ''billion'' and ''trillion''. His usage referred to the long scale values of 1012 and 1018 respectively. These terms have subsequently been revalued in English to the short scale values 109 and 1012 respectively, although the original values remain in long scale countries. :... item noctes que le premier greton dembas vault ung, le second vault (some words seem to be omitted... ) cent, le quart vult mille, le Ve vault dix M, le VIe vault cent M, le VIIe vault Milion, Le VIIIe vault dix Million, Le IXe vault cent Millions, Le Xe vault Mill Millions, Le XIe vault dix mill Millions, Le XIIe vault Cent mil Millions, Le XIIIe vault bymillion, Le XIIIIe vault dix bymillions, Le XVe vault mil bymillions, Le XVIe vault mil bymillions, Le XVIIe vault dix Mil bymillions, Le XVIIIe vault cent mil bymillions, Le XIXe vault trimillion, Le XXe vault dix trimillions ... ;Translation: : ==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「Jehan Adam」の詳細全文を読む スポンサード リンク
|