Muḥammad ibn Musa al-Khwarizmi was born in 780 CE in Khwarazm. A Persian mathematician, astronomer and geographer, al-Khwarizmi worked in Baghdad at the House of Wisdom under the Abbasid caliph al-Ma'mun. His book on calculation by completion and balancing, Al-jabr, gave its name to algebra and set out methods for solving linear and quadratic equations. A second work introduced the Indian decimal place-value system, using the numerals now called Hindu-Arabic, to the Islamic world and later to Europe, and the word algorithm comes from the Latin form of his name. He also compiled astronomical tables and improved on Ptolemy's geography.
Before and after
- from 764 CE to 1621Construction of Abbey and Altenmünster of Lorsch
- 770 CEDeath of Du Fu
- from 772 CE to 804 CESaxon Wars
- 778 CEConstruction of Kiyomizu-dera
- 780 CEBirth of Muḥammad ibn Musa al-Khwarizmi
- 786 CEConstruction of Mosque-Cathedral of Cordoba
- 787 CESecond Council of Nicaea
- 8th centuryRise of Neo-Confucianism
- 8 June 793 CEVikings raid Lindisfarne
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This moment belongs to the Medieval world (500 CE to 1500 CE), kingdoms, faiths and trade routes. You can also browse everything in the 8th century.