アブル・ワファー
1. Abū al-Wafā' BūzjānīAbū al-Wafāʾ, Muḥammad ibn Muḥammad ibn Yaḥyā ibn Ismāʿīl ibn al-ʿAbbās al-Būzjānī (10 June 940 – 15 July 998) was a Persian mathematician and astronomer who worked in Baghdad. He made important innovations in spherical trigonometry, and his work on arithmetics for businessmen contains the first instance of using negative numbers in a medieval Islamic text. He is also credited of compiling tables of sines and tangents at 15' intervals.
Read “Abū al-Wafā' Būzjānī” on English Wikipedia
Read “アブル・ワファー” on Japanese Wikipedia
Read “Abū al-Wafā' Būzjānī” on DBpedia
Read “Abū al-Wafā' Būzjānī” on English Wikipedia
Read “アブル・ワファー” on Japanese Wikipedia
Read “Abū al-Wafā' Būzjānī” on DBpedia
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