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.

Was one of the first people to work on algebra solutions in a systematic way for linear and algebraic solutions. Is attributed in this article to discovering the properties of zero and the decimal systems, as well as other major contributions.