Muhammad ibn Mūsā al-Khwārizmī

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Muḥammad ibn Mūsā al-Khwārizmī (محمد بن موسی خوارزمی) or Al Khawarizmi also known as Zakariyyā al-Rāzī (c.780 - 850) was a Persian mathematician, astronomer, astrologer and geographer.


  • That fondness for science, … that affability and condescension which God shows to the learned, that promptitude with which he protects and supports them in the elucidation of obscurities and in the removal of difficulties, has encouraged me to compose a short work on calculating by al-jabr and al-muqabala , confining it to what is easiest and most useful in arithmetic.
    • As quoted in: Victor J. Katz (2009) A history of mathematics: an introduction. p. 271

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