Al-Karaji (d. 910 to 929)
Abu Bakr ibn Hussein was born in Kharkh, a suburb of Baghdad. His works covered arithmetic, algebra and geometry. His book ‘Al-Kafi fi Al-Hisab' (Essentials of Arithmetic) covers the rules of computation. His second book, ‘Al- Fakhri' derived its name from Al-Kharkhi's friend the Grand Vizier of Baghdad.
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by: FSTC Limited, Mon 16 July, 2007