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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Al-Karaji ： ウィキペディア英語版 Al-Karaji (or ) (c. 953 – c. 1029) was a 10th-century mathematician and engineer who flourished at Baghdad. His three principal surviving works are mathematical: ''Al-Badi' fi'l-hisab'' (''Wonderful on calculation''), ''Al-Fakhri fi'l-jabr wa'l-muqabala'' (''Glorious on algebra''), and ''Al-Kafi fi'l-hisab'' (''Sufficient on calculation''). ==Name== There is ambiguity in what his last name was. Some medieval Arabic documents have al-Karajī and others have al-Karkhī. Arabic documents from the Baghdad of that era are sometimes written without diacritical points, whereby the written name is inherently ambiguous and can be read in Arabic as Karajī (reading ج) or Karkhī (reading خ) or Karahī or Karhī (reading ح) -- see Arabic rasm notation, i.e. the absence of ''i'jam'' diacritic distinctions of consonants. His name could have been ''al-Karkhī'', indicating that he was born in Karkh, a suburb of Baghdad, or ''al-Karajī'' indicating his family came from the city of Karaj in Iran. He certainly lived and worked for most of his life in Baghdad, however, which was the scientific and trade capital of the Islamic world. 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「Al-Karaji」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.