Abd al-'Aziz ibn Mahammad al-Qahiri al-Shafi' al-Wafa'i | |
|---|---|
| Born | 811 AH /1408 |
| Died | 876 AH/ 1471 (aged 63) |
| Occupation(s) | Astronomer, mathematician, time keeper |
| Era | Mamluk era |
| Notable work |
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'Abd al-'Aziz ibn Mahammad al-Qahiri al-Shafi' al-Wafa'i known asIbn al-Aqba'i (1408–1471) was anEgyptian astronomer and mathematician in the 15th century. He was born in 811 H.E. (1408 AD) and died in 876 H.E (1471 AD). Some sources say that he died in 874 or 879 H.E. He was a student ofIbn al-Majdi andNur al-din al-Naqqash. He became a time keeper at theMosque of Sultan al-Muayyad inCairo. He also became the chief of the time keepers of theAzhar mosque and the Maridani Mosque. He was interested in the calculation of the local times of cities based on their latitude and longitude. He invented an astronomical device called Da'irah al-Mu'addal.[1][2]
He wrote about 40 books and 20 treatises onmathematics andastronomy, none of them published. Among his works is the manuscript Risalah al-'Amal bi al-Rub' al-Mujayyab
