Math: Algebra: History: People: al-Khwarizmi - Abu Ja'far al-Khwarizmi (780-850)

Description: Arab mathematician, lived when spread of ideas was very slow, wrote Hisab al-jabr wal-muqabala, concepts of the Middle East. The "al-jabr" gave us the word algebra." introduced the decimal system, rules for solving linear and quadratic equations, the word "algorithm" comes from his name.