person (Farsi: "محمد بن موسى الخوارزمي") An astronomer, geographer and mathematician, born around 780 CE in Khwarizm (modern Khiva), south of the Aral Sea. Khawarizmi founded
algebra and
algorithms (named after him), synthesised Greek and Hindu knowledge, introducing the Indian system of numerals (now known as Arabic numerals), developed operations on
fractions, trigonometric tables containing the sine functions, the calculus of two errors and the
decimal system, explained the use of
zero, perfected the geometric representation of
conic sections, collaborated in the degree measurements aimed at measuring of volume and circumference of the Earth and produced the first map of the known world in 830 CE. He died around 850 CE.
Muslim Heritage.com (http://muslimheritage.com/day_life/default.cfm?ArticleID=317&Oldpage=1]).
(2008-07-08)