Abu Ja'far al-Khwarizmi
Abu Ja'far al-Khwarizmi was an Arab mathematician who lived between
780-850. At a time when the diffusion of ideas was very slow due to the lack of
cross-cultural communication, al-Khwarizmi wrote a book, Hisab al-jabr
wal-muqabala, which contained many important mathematical concepts and formulae
of the Middle East. One of these concepts was completing the square. The "al-jabr" in the title gave us the word "algebra."
This book revolutionized western (European) mathematics: It introduced the decimal system, rules for solving linear and quadratic equations, and doing geometry.
Al-Khwarizmi's impact on today's mathematics is evidenced by our use of the word "algorithm", which is the Latin translation of his name.
Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
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