MATHEMATICIAN

Abu al-Wafa' Buzjani

940 - 998

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Abū al-Wafāʾ Muḥammad ibn Muḥammad ibn Yaḥyā ibn Ismāʿīl ibn al-ʿAbbās al-Būzjānī or Abū al-Wafā Būzhjānī (Persian: ابو الوفا بوژگانی, Arabic: ابو الوفا بوزجانی; 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 arithmetic for businessmen contains the first instance of using negative numbers in a medieval Islamic text. He is also credited with compiling the tables of sines and tangents at 15' intervals. He also introduced the secant and cosecant functions, as well studied the interrelations between the six trigonometric lines associated with an arc. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Abu al-Wafa' Buzjani is the 97th most popular mathematician (down from 61st in 2019), the 69th most popular biography from Iran (down from 57th in 2019) and the 2nd most popular Iranian Mathematician.

Abu al-Wafa' Buzjani was a mathematician and astronomer who was most famous for his tables of trigonometric functions.

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Among MATHEMATICIANS

Among mathematicians, Abu al-Wafa' Buzjani ranks 97 out of 1,004. Before him are Christian Goldbach, Jim Simons, Leopold Kronecker, Frank P. Ramsey, Joan Clarke, and L. E. J. Brouwer. After him are Carl Gustav Jacob Jacobi, Paul Erdős, John Wallis, Claude Shannon, Felix Klein, and Guillaume de l'Hôpital.

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Contemporaries

Among people born in 940, Abu al-Wafa' Buzjani ranks 3. Before him are Hugh Capet, and Ferdowsi. After him are Géza, Grand Prince of the Hungarians, Mieszko I of Poland, Eadwig, Leopold I, Margrave of Austria, Abu-Mahmud Khojandi, Ibn Sahl, Abū Sahl al-Qūhī, Ælfthryth, wife of Edgar, and Baldwin III, Count of Flanders. Among people deceased in 998, Abu al-Wafa' Buzjani ranks 1. After him are Sigfried, Count of the Ardennes, Koppány, and Sisinnius II of Constantinople.

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In Iran

Among people born in Iran, Abu al-Wafa' Buzjani ranks 69 out of 631. Before him are Cyaxares (-700), Ibn Majah (824), Achaemenes (-800), Shapur II (309), Cyrus I (-690), and Soraya Esfandiary-Bakhtiary (1932). After him are Tekuder (1247), Fakhr al-Din al-Razi (1149), `Abdu'l-Bahá (1844), Psamtik III (-590), Osroes I (50), and Babak Khorramdin (798).

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Among MATHEMATICIANS In Iran

Among mathematicians born in Iran, Abu al-Wafa' Buzjani ranks 2. Before him are Omar Khayyam (1048). After him are Qutb al-Din al-Shirazi (1236), Abu Nasr Mansur (960), Abū Sahl al-Qūhī (940), Al-Khazini (1077), Sharaf al-Dīn al-Ṭūsī (1135), Al-Karaji (953), Maryam Mirzakhani (1977), Al-Mahani (820), Kamāl al-Dīn al-Fārisī (1265), and Al-Nayrizi (865).

Iranian born Mathematicians

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