Name: : Muhammad Ibn Musa al-Khwarizmi
Title : Mathematician, astronomer, astrologer and geographer.
Birth : Khwarizm (now Khiva),Uzbekistan, in 780.
Death : Khwarizm (now Khiva),Uzbekistan, in 850.
Ethnicity : Persian.
Expertises : Algebra, arithmetic, geography, astronomy, astrology.
Notable Ideas : ‘Father of algebra’. The words algorism and algorithm stem from Algoritmi, the Latinization of his name. Latin translations of his Arithmetic, on the Indian numerals, introduced the decimal positional number system to the Western world in the 12th century. He revised and updated Ptolemy’s Geography as well as writing several works on astronomy and astrology.
Works : Al-Kitab al-mukhtasar fi hisab al-jabr wa’l-muqabala (The Compendious Book on Calculation by Completion and Balancing), Kitāb al-Jamʿ wa-l-tafrīq bi-ḥisāb al-Hind (On the Calculation with Hindu Numerals), Kitāb ṣūrat al-Arḍ (Book on the Appearance of the Earth or The Image of the Earth), Zīj al-Sindhind (Astronomical Tables of Sind and Hind), and Risāla fi istikhrāj taʾrīkh al-yahūd (Treatise on Extraction of the Jewish Era)/The Hebrew Calendar). — Wikipedia, http://www.storyofmathematics.com/islamic_alkhwarizmi.html