| Full name | Ibn al‐Bannāʾ al‐Marrākushī |
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| Born | 29 or 30 December 1256 Marrakech, Morocco |
| Died | 31 July 1321 |
| Era | Islamic Golden Age |
| Region | Islamic civilization |
| Main interests | Mathematics, Astronomy |
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Ibn al‐Bannāʾ al‐Marrākushī al-Azdi also known as Abu'l-Abbas Ahmad ibn Muhammad ibn Uthman al-Azdi. (Arabic: ابن البنّاء) [29) December 1256 – c. 1321) was a Moroccan mathematician, astronomer, Islamic scholar, Sufi, and a one time astrologer.
The crater Al-Marrakushi on the Moon is named after him.
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Ibn al-Banna' (lit. the son of an architect), was born in Marrakesh in 1256.[1] Having learned basic mathematical and geometrical skills he proceeded to translate Euclid's Elements into Arabic.[1]
Ibn al-Banna' wrote between 51 to 74 treatises, encompassing such varied topics as Algebra, Astronomy, Linguistics, Rhetoric, and Logic. One of his works, called Talkhīṣ ʿamal al-ḥisāb (Arabic, تلخيص عمل الحساب ) (Summary of arithmetical operations), includes topics such as fractions, sums of squares and cubes etc. Another, called Tanbīh al-Albāb,[2] covers topics related to:
Yet another work by Ibn al-Banna' was Rafʿ al-Ḥijāb (Lifting the Veil) which included topics such as computing square roots of a number and theory of continued fractions.[1] This work was also the first mathematical work since Brahmagupta to use an algebraic notation, which was then further developed by his successor Abū al-Hasan ibn Alī al-Qalasādī two centuries later.[3]
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