AL KHWARZMI

MUHAMMAD BIN MUSA ABU JAFAR ALKHWARZMI 780-850.
His major contributions to mathematics, astronomy, astrology, geography and cartography provided the foundations for future invention in algebra, trignometry and other areas of intrests .his systematic and logical approach to solving linear and quadratic equations gave shape to the discipline of algebra,a word that is derived from the name of his book in arabic language al-kitab al-mukhtasar fi hisab al-jabr wal-muqabila.
He also assisted in the construction of a world map for the caliph mamoon and participated in a project to determine the circumference of the earth. supervising the work of 70 geographers to create the map of the then known world. when his work was copied and transferred to europe through latin translations , it had a profound impact on the advancement of basic mathematics in europe.