Muhammad ibn Musa al-Khwarizmi

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Muḥammad ibn Mūsā al-Khwārizmī
Born c. 780
Khwarezm, Uzbekistan
Died c. 850
Baghdad, Iraq
Other names Algorithmi
Employer House of Wisdom
Occupation mathematician, astronomer, geographer, historian
Notable works The Compendious Book on Calculation by Completion and Balancing (al-Jabr)
Book of the Description of the Earth
Astronomical tables of Siddhanta
Extraction of the Jewish Era
Book of History

Muḥammad ibn Mūsā al-Khwārizmī (محمد بن موسی خوارزمی) was an influential 9th-century polymath from Islamic Persia who produced key works in mathematics, astronomy, geography, and history. Best known for his contributions to algebra (a field now eponymous with al-Khwarizmi's work al-Jabr) and to the concept of the algorithm (also eponymous with the latinization of al-Khwarizmi's name, Algorithmi), Khwarizmi also famously improved upon Ptolemy's Geography, studied the history of calendars, and advanced key developments in trigonomerty. Prominent in his time as well as after, Khwarizmi was appointed head of library and resident astronomer at the famous House of Wisdom (بيت الحكمة) in Baghdad during the rule of al-Ma'mun in the Abbasid Golden Age (775-861), which, under the rule of the unorthodox and rationalist Mu'tazilites, saw the translation of Greek works into Arabic.

Reception

Islamic world

Al-Khwarizmi was looked down upon by notable Sunni Islamic scholars who held him in contempt for his unorthodox religious views, which they deemed heretical. The Abbasid caliphal patrons who had supported the work of al-Khwarizmi and his peers were themselves rationalist Mu'tazilites, who would be rejected the scholars of the coming Ash'ari, Maturidi, and Hanbali orthodoxy.

Ibn Taymiyyah wrote about al-Khwarizmi:

انه وإن كان علمه صحيحا إلا إن العلوم الشرعية مستغنية عنه وعن غيره

Even if his science is correct, regardless, the Islamic sciences are dispensed of him and his likes.


مجموع الفتاوى: 9/214 - 215

See also