Book of the Description of the Earth

Muḥammad ibn Mūsā al-Khwārizmī
Khwarizmi statute in Amir Kabir University, Tehran
Born	c. 780 Khwarezm
Died	c. 850
Academic work
Era	Medieval era (Islamic Golden Age)
Notable ideas	Treatises on algebra and Indian numerals
Influenced	Abu Kamil

Muḥammad ibn Mūsā al-Khwārizmī (Persian: محمد بن موسی خوارزمی‎‎, Arabic: محمد بن موسى الخوارزمی‎‎; c. 780 – c. 850) (Arabic pronunciation: [ælxɑːræzmiː]), formerly Latinized as Algoritmi, was a Persianmathematician, astronomer, and geographer during the Abbasid Caliphate, a scholar in the House of Wisdom in Baghdad.

In the 12th century, Latin translations of his work on the Indian numerals introduced the decimal positional number system to the Western world. Al-Khwārizmī's The Compendious Book on Calculation by Completion and Balancing presented the first systematic solution of linear and quadratic equations in Arabic. He is often considered one of the fathers of algebra. He revised Ptolemy's Geography and wrote on astronomy and astrology.