Muhammad ibn Musa al-Khwarizmi Professions : Mathematician Born : 780 Died : 850 Browse All Authors Famous Quotes by Muhammad ibn Musa al-Khwarizmi When I consider what people generally want in calculating, I found that it always is a number. I also observed that every number is composed of units, and that any number may be divided into units. Moreover, I found that every number which may be expressed from one to ten, surpasses the preceding by one unit: afterwards the ten is doubled or tripled just as before the units were: thus arise twenty, thirty, etc. until a hundred: then the hundred is doubled and tripled in the same manner as the units and the tens, up to a thousand;… so forth to the utmost limit of numeration. Muhammad ibn Musa al-Khwarizmi limits numbers people Similar Authors Abram Samoilovitch Besicovitch mathematician Brahmagupta mathematician Augustus De Morgan mathematician Augustin-Louis Cauchy mathematician Atle Selberg mathematician Arthur Cayley mathematician All Authors
