The prominent philosopher, astronomer, and mathematician, al‐Abhari al‐Munajjim
Compiled By: Syed Ali Shahbaz
On 19th of the Islamic month of Rabi as-Sani in 663 AH, the prominent philosopher, astronomer, and mathematician, Atheer od‐Din al‐Mufadhal Samarqandi al‐Abhari al‐Munajjim, passed away in Shabestar, in northwestern Iran. He studied and taught at various schools in Khorasan, Baghdad, and Arbil, living for some time in Sivas in what is now Turkey.
He was a student of Kamal od‐Din ibn Yunus, and also studied under the famous scholar Fakhr od‐Din ar‐Raazi. His works on astronomy are titled “Risala fī'l-Hayya” and “Kashf al‐Haqa'eq fī Tahrir ad‐Daqa'eq”, where he accepts the view that the celestial bodies do not change and maintains that stars have volition and it is the source of their motion. In the field of mathematics, he wrote “al-Islah” which is Correction of the Greek Euclid, and is an attempt to prove the parallel postulate. In philosophy he wrote “Hidayat al-Hikmah”.