780 A.D. Birth of Mohamed Ibn-Musa Al-Khwarizmi.
825 A.D. At the age of 45, Al-Khwarizmi wrote a book which was the oldest known writing using a fully developed numeration system.
Al-Khwarizmi established the branch of mathematics that is known as Algebra. The word Algebra is driven from the Arabic word “Jaber” that means Approximation.
Al-Khwarizmi established the Arabic numbers 0 through 9 that are still in use until today.
The words logarithm and algorithm are named after Al-Khwarizmi.
850 A.D. Al-Khwarizmi died at the age of 70.
#KDXVAWRkXeTKDGTAE5BF2DAAZD