**(850 – 930 AD)**

Abu-Kamil Ibn-Aslam Shuja was one of the most prominent geniuses of the Islamic Golden Age. He was nicknamed “Al-Hasib Al-Misri”, (which translates to “The Egyptian Calculator”), due to his extraordinary mathematical abilities. Born in Egypt, in the same year Mohammad Al-Khwarizmi died, Abu-Kamil is often referred to as his successor. Although he forayed impressively into arithmetic, logic, astronomy and survey, his glorious achievements were in algebra and geometry. The treatises he published in these fields were among the best-selling science texts of that era. Some of them which were later translated to English include: the *Book on Algebra*, the *Book on Survey and Geometry*, the *Book of Two Errors*, the *Book of Kernel*, and the *Book on Augmentation and Diminution*. But above all, Abu-Kamil is lauded today as the first person who utilized irrational numbers as solutions, as well as coefficients to equations. As the intellectual heir of Al-Khwarizmi, he followed-up by building on the works of his predecessor: gaining great fame and influence as a result. Abubakar Al-Karaji of Persia was attracted to his works; and so was Leonardo Fibonacci. In fact, Fibonacci benefited immensely from Abu-Kamil’s accomplishments: using them as bases for the treatises he later published and circulated in Europe. Thus, it could be said that (in addition to Fibonacci’s efforts) the greatest progress which Medieval Europe made in mathematics was due to Abu-Kamil. He improved and provided the best Mid-Eastern works (of Al-Khwarizmi) plus the superb Asian curricula masterminded by prevenient Indian and Chinese mavens.

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