Al-Khwarizmi

Who is Al-Khwarizmi?

Muhammad ibn Musa al-Khwarizmi was a mathematician, astronomer, and geographer generally believed to have been born in the region of Khwarazm, an area centered on the Amu Darya delta that lies within present-day Uzbekistan and Turkmenistan. He worked at the House of Wisdom in Baghdad under the Abbasid Caliphate, where he produced foundational texts that shaped mathematics for centuries. His treatise "Al-Kitab al-Mukhtasar fi Hisab al-Jabr wal-Muqabala" (The Compendious Book on Calculation by Completion and Balancing) introduced systematic methods for solving linear and quadratic equations and gave the world the term "algebra," derived from "al-jabr" in its title. His name, Latinized as "Algorithmi," is the direct source of the modern word "algorithm." Al-Khwarizmi also wrote influential works on Hindu-Arabic numerals that helped introduce the decimal positional number system to the Islamic world and, eventually, to Europe, and he compiled geographical tables correcting and extending the work of Ptolemy. His combined contributions place him among the most consequential mathematicians in history.

Sources: Encyclopaedia Britannica, "al-Khwarizmi" · Roshdi Rashed, Al-Khwarizmi: The Beginnings of Algebra (2009) · MacTutor History of Mathematics Archive, University of St Andrews