Abu Abdullah Muhammed Al-Khorezmi (780–850): He is from Khwarezm (Uzbekistan). He worked in Baghdad. He systematized and named algebra. He contributed to the global understanding of geometry in the Arab and Western world. He advocated the necessity of the decimal system. He gave his name to the algorithm. Kutrubbul (?) 780 of Baghdad, Baghdad 813-850. … Continue reading Harezmi 780-850