Maʾmūn: Abū al-ʿAbbās ʿAbd Allāh ibn Hārūn al-Rashīd al-Maʾmūn

Name (arabic)

مأمون: أبو العبّاس عبد الله بن هارون الرشيد المأمون

Name (translit)

Maʾmūn: Abū al-ʿAbbās ʿAbd Allāh ibn Hārūn al-Rashīd al-Maʾmūn









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Lived in

Died in

Dedicatee of


The ʿAbbāsid Caliph Maʾmūn (r. 813-33), the son of Hārūn al‐Rashīd (r. 786-809), was known for his patronage of the mathematical sciences. He sponsored two sets of astronomical observations (one in Baghdad, the other in Damascus) with the intent of producing more precise parameters. The astronomical handbook with tables, "al-Zīj al-Maʾmūnī al-mumtaḥān," was dedicated to him (see Yaḥyā ibn Abī Manṣūr).

Number in MAMS


Biography URL



Authored Works

2 works:


Kitāb al-qurʿah al-Maʾmūniyyah , كتاب القرعة المأمونيّة

Geography: Practical


Berggren, J.Lennart. 2007. “Maʾmūn: Abū Al-ʿabbās ʿabdallāh Ibn Hārūn Al-Rashīd”. In The Biographical Encyclopedia Of Astronomers, ed. Thomas Hockey, 2:733. New York: Springer-Verlag.
İhsanoğlu, Ekmeleddin, and Boris Rozenfeld. 2003. Mathematicians, Astronomers And Other Scholars Of Islamic Civilisation And Their Works (7Th-19Th C.). Istanbul: Research Centre for Islamic History, Art, and Culture.

P. 20 (no. 32).

Kunitzsch, Paul. 1997. “Al-Maʾmūn”. In Encyclopaedia Of The History Of Science, Technology, And Medicine In Non-Western Cultures, ed. Helaine Selin, 548-49. Dordrecht; Boston: Kluwer Academic.
King, David. 1986. A Survey Of The Scientific Manuscripts In The Egyptian National Library. Winona Lake, IN: Eisenbrauns; The American Research Center in Egypt.

P. 32.

Sezgin, Fuat. 1979. Geschichte Des Arabischen Schrifttums (Gas), Vol. 7, Astrologie Bis Ca. 430 H. Leiden: E. J. Brill.

P. 118.

Destombes, Marcel. 1956. “Note Sur Le Catalogue D'etoiles Du Calife Al-Mamoun”. In Actes Du Viiie Congrès International D'histoire Des Sciences (Florence 3-9 Septembre 1956) , 309-12. Vinci [Italy]: Gruppo italiano di stori delle scienze.
Gogol, Nikolay. 1956. “Al-Maʾmūn”. In Sobraniye Sochineniy, 6:62-8. Moscow.
Lane-Poole, Stanley. 1894. The Mohammedan Dynasties. Chronological Genealogical Tables With Historical Introductions. Westminster: A. Constable and Company .
Sarton, George. Introduction To The History Of Science. 3 vols. in 5 vol.. Baltimore: Williams and Wilkins, for the Carnegie Institution of Washington.

Vol. 1, pp. 557-58.