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((アラビア語:ثابت بن قرة), (ラテン語:Thebit/Thebith/Tebit); 826〔 – February 18, 901) was an Sabian mathematician, physician, astronomer, and translator who lived in Baghdad in the second half of the ninth century during the time of Abbasid Caliphate. He was not a Muslim (Sabian) Ibn Qurra made important discoveries in algebra, geometry, and astronomy. In astronomy, Thabit is considered one of the first reformers of the Ptolemaic system, and in mechanics he was a founder of statics. ==Biography== Thabit was born in Harran (known as Carrhae in antiquity) in Higher Mesopotamia/Assyria (in modern-day Turkey). The city of Harran was never fully Christianized, unlike the rest of Mesopotamia. By the early Arabic era, the people of Harran were still adhering to the cult of Sin. Thabit and his pupils lived in the midst of the most intellectually vibrant, and probably the largest, city of the time, Baghdad. He occupied himself with mathematics, astronomy, astrology, magic, mechanics, medicine, and philosophy. Later in his life, Thabit's patron was the Abbasid Caliph al-Mu'tadid (reigned 892–902). Thabit became the Caliph's personal friend and courtier. Thabit died in Baghdad. After him the greatest Sabean name was Abu Abdallah Mohammad ibn Jabir Al-Battani. 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「Thābit ibn Qurra」の詳細全文を読む スポンサード リンク
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