## Mohammad bin Musa al-Khawarizmi## Iranian Muslim Philosopher## d. 840Abu Abdullah Mohammad Ibn Musa al-Khawarizmi was born at Khawarizm (Kheva), south of Aral sea. Very little is known about his early life, except for the fact that his parents had migrated to a place south of Baghdad. The exact dates of his birth and death are also not known, but it is established that he flourished under Al- Mamun at Baghdad through 813-833 and probably died around 840 A.D. Khawarizmi was a mathematician, astronomer and geographer.
He was perhaps one of the greatest mathematicians who ever lived,
as, in fact, he was the founder of several branches and basic concepts
of mathematics. In the words of Phillip Hitti, he influenced
mathematical thought to a greater extent than any other mediaeval
writer. His work on algebra was outstanding, as he not only initiated
the subject in a systematic form but he also developed it to the
extent of giving analytical solutions of linear and quadratic
equations, which established him as the founder of Algebra. The
very name Algebra has been derived from his famous book The development of astronomical tables by him was a significant contribution to the science of astronomy, on which he also wrote a book. The contribution of Khawarizmi to geography is also outstanding, in that not only did he revise Ptolemy's views on geography, but also corrected them in detail as well as his map of the world. His other contributions include original work related to clocks, sun-dials and astrolabes. Several of his books were translated into Latin in the early
12th century. In fact, his book on arithmetic, The influence of Khawarizmi on the growth of science, in general, and mathematics, astronomy and geography in particular, is well established in history. Several of his books were readily translated into a number of other languages, and, in fact, constituted the university text-books till the 16th century. His approach was systematic and logical, and not only did he bring together the then prevailing knowledge on various branches of science, particularly mathematics, but also enriched it through his original contribution. No doubt he has been held in high repute throughout the centuries since then.
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