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Mansur (970 - 1036) - Biography - MacTutor History of Mathematics

Abu Nasr Mansur ibn Ali ibn Iraq

Quick Info

Born

(possibly) Khwarazm (now Kara-Kalpakskaya, Uzbekistan)

Died

(probably) Ghazna (now Ghazni, Afganistan)

Summary

Abu Nasr Mansur was an Islamic prince and mathematician who collaborated with al-Biruni on astronomy and mathematics.

He discovered the sine rule for triangles.

Biography

Abu Nasr Mansur was a native of Gilan which is mentioned in The Regions of the World, a Persian geography book of His family, the Banu Iraq, were rulers of Khwarazm the region adjoining the Aral Sea, and it was in this region that Abu Nasr Mansur studied and became a disciple of Abu'l-Wafa.

Abu Nasr Mansur was teaching in this area when he first began his association with al-Biruni whom he taught from about This began an important collaboration which was to go on for many years.

The end of the 10th century and beginning of the 11th century was a period of great unrest in the Islamic world and there were civil wars in the