Abd al-'Aziz ibn Muhammad al-Qahiri al-Wafa'i known as Ibn al-Aqba'i (1408–1471) was an Egyptian 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 of

Ibn al-Majdi Shihāb al‐Dīn ibn al‐Majdī ( ar, شهاب الدين بن المجدي; 1359–1447 CE) was an Egyptian mathematician and astronomer. His most important mathematical work was "''Book of Substance''", a voluminous commentary on the ''Summa ...

and

Nur al-din al-Naqqash Nur may refer to: In Islam * An-Nur, one of the names of God in Islam, meaning "The Light". * Nūr (Islam), a concept, literally meaning "light" * An-Nur (The Light), the 24th chapter of the Qur'an * '' Risale-i Nur Collection'', a collection ...

. He became a time keeper at the Mu'ayyad Mosque in

Cairo Cairo ( ; ar, القاهرة, al-Qāhirah, ) is the capital of Egypt and its largest city, home to 10 million people. It is also part of the largest urban agglomeration in Africa, the Arab world and the Middle East: The Greater Cairo metr ...

. He also became the chief of the time keepers of the Azhar 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. He wrote about 40 books and 20 treatises on

mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...

and

astronomy Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, g ...

, none of them published. Among his works is the manuscript Risalah al-'Amal bi al-Rub' al-Mujayyab

References

{{DEFAULTSORT:Abd al-Aziz al-Wafai 1408 births 1471 deaths Scientists who worked on qibla determination 15th-century astronomers Medieval Egyptian astronomers Medieval Egyptian mathematicians Medieval astronomers Scholars from the Mamluk Sultanate