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Ibn al-Banna' al-Marrakushi

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Title: Ibn al-Banna' al-Marrakushi  
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Language: English
Subject: Mathematics in medieval Islam, Shams al-Dīn al-Samarqandī, Habash al-Hasib al-Marwazi, Thābit ibn Qurra, Qutb al-Din al-Shirazi
Collection: 1256 Births, 1321 Deaths, 13Th-Century Astronomers, 13Th-Century Mathematicians, 13Th-Century Moroccan People, 14Th-Century Mathematicians, 14Th-Century Moroccan People, Algebraists, Astronomers of Medieval Islam, Geometers, Mathematicians of Medieval Islam, Mathematicians Who Worked on Islamic Inheritance, Moroccan Astronomers, Moroccan Mathematicians, Moroccan Writers, People from Marrakesh, Scientists Who Worked on Qibla Determination, World Digital Library Related
Publisher: World Heritage Encyclopedia

Ibn al-Banna' al-Marrakushi

Ibn al‐Bannāʾ al‐Marrākushī
Born 29 or 30 December 1256
Marrakech, Morocco
Died 31 July 1321
Era Islamic Golden Age
Region Islamic civilization
Main interests
Mathematics, Astronomy

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.


  • Biography 1
  • Works 2
  • See also 3
  • Notes 4
  • References 5
  • Further reading 6
  • External links 7


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:

  • calculations regarding the drop in irrigation canal levels,
  • arithmetical explanation of the Muslim laws of inheritance
  • determination of the hour of the Asr prayer,
  • explanation of frauds linked to instruments of measurement,
  • enumeration of delayed prayers which have to be said in a precise order,and
  • calculation of legal tax in the case of a delayed payment

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]

See also


  1. ^ a b c G. Sarton: Introduction to the History of Science; The Carnegie Institution; Washington; 1927; vol 2; p. 998.
  2. ^ A Djebbar: Mathematics in medieval Maghreb; AMUCHMA-Newsletter 15; Universidade Pedagógico (UP), Maputo (Mozambique), 15.9.1995.
  3. ^  .


  • .  

Further reading

  • Ahmed Jabbar and Mohammed Ablagh : "Life and Works of Ibn al-Banaa al-Murrakushi", Publication of the Faculty of Letters, Rabat, 2001

External links

  • Samsó, Julio (2007). "Ibn al‐Bannāʾ: Abū al‐ʿAbbās Aḥmad ibn Muḥammad ibn ʿUthmān al‐Azdī al‐Marrākushī". In Thomas Hockey; et al. The Biographical Encyclopedia of Astronomers. New York: Springer. pp. 551–2. (PDF version)  
  • Vernet, J. (2008) [1970-80]. "Ibn Al-Bannā Al Marrākushī".  
  • The Filāḥa Texts Project: Ibn al-Bannā’
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