Abu al-Wafa' al-Buzjani | |
|---|---|
 | |
| Born | 10 June 940 Buzhgan, Iran |
| Died | 15 July 998 (aged 58) |
| Academic background | |
| Influences | Al-Battani |
| Academic work | |
| Era | Islamic Golden Age |
| Main interests | Mathematics and astronomy |
| Notable works | Almagest of Abū al-Wafā' |
| Notable ideas | |
| Influenced | Al-Biruni, Abu Nasr Mansur |
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;[1] 10 June 940 – 15 July 998)[2] was a Persian[3][4][5] 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.[2] His Almagest was widely read by medieval Arabic astronomers in the centuries after his death. He is known to have written several other books that have not survived.
- ^ "بوزجانی". Encyclopaediaislamica.com. Archived from the original on 25 October 2008. Retrieved 30 August 2009.
- ^ a b Cite error: The named reference
MacTutorwas invoked but never defined (see the help page). - ^ Ben-Menahem, A. (2009). Historical encyclopedia of natural and mathematical sciences (1st ed.). Berlin: Springer. p. 559. ISBN 978-3-540-68831-0.
970 CE Abu al-Wafa al-Buzjani (940–998, Baghdad). Persian astronomer and mathematician.
- ^ Sigfried J. de Laet (1994). History of Humanity: From the seventh to the sixteenth century. UNESCO. p. 931. ISBN 978-92-3-102813-7.
The science of trigonometry as known today was established by Islamic mathematicians. One of the most important of these was the Persian Abu' l-Wafa' Buzjani (d. 997 or 998), who wrote a work called the Almagest dealing mostly with trigonometry
- ^ Subtelny, Maria E. (2007). Timurids in Transition. BRILL. p. 144. ISBN 9789004160316.
Persian mathematician Abu al-Wafa Muhammad al-Buzjani