Al-Khwarizmi
Iranian mathematician, astronomer, and geographer (c. 780–850) whose Al-Jabr founded algebra, and whose Latinized name gave the word 'algorithm.'
Read in context →At a glance
- Field
- Mathematics, astronomy, geography
- Era
- Islamic Golden Age (House of Wisdom, Baghdad)
- Key work
- Al-Jabr wa'l-Muqabala; treatise on Hindu calculation
- Linguistic legacy
- Source of the words 'algebra' and 'algorithm'
Biography
Muhammad ibn Musa al-Khwarizmi (c. 780–850 CE) was a mathematician, astronomer, and geographer who worked at the House of Wisdom in Baghdad, the great scholarly center of the Abbasid era, under the patronage of Caliph al-Ma'mun. His most famous work, al-Kitab al-mukhtasar fi hisab al-jabr wa'l-muqabala, founded algebra as an independent discipline by providing a systematic method for solving linear and quadratic equations; the word 'algebra' derives from 'al-jabr' in this very title. He also wrote a treatise on calculation with Hindu numerals that, through its Latin transmission, brought the decimal system and the digit zero to Europe, and the Latinized form of his name, 'Algoritmi,' gave rise to the word 'algorithm.' In geography he wrote Surat al-Ard, based on Ptolemy but with corrections, and contributed to the compilation of astronomical tables (zij). A notable nuance is that his origin is debated: the epithet 'al-Khwarizmi' points to the region of Khwarazm (in Central Asia, an Iranian homeland), but some early sources, including al-Tabari, add a phrase sometimes read as linking him to the Qutrubbull district near Baghdad, and there is no consensus on his exact birthplace and descent.
Related entities
Sources
- Encyclopaedia Iranica, "Ḵᵛārazmī, Abū Jaʿfar Moḥammad"
- Encyclopaedia Britannica, "al-Khwarizmi"
- Roshdi Rashed, Al-Khwarizmi: The Beginnings of Algebra (2009)