Simplifying equations in Arabic algebra |
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Authors: | Jeffrey A Oaks Haitham M Alkhateeb |
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Institution: | Department of Mathematics and Computer Science, University of Indianapolis, 1400 E. Hanna Ave., Indianapolis, IN 46227, USA |
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Abstract: | Historians have always seen jabr (restoration) and muqābala (confrontation) as technical terms for specific operations in Arabic algebra. This assumption clashes with the fact that the words were used in a variety of contexts. By examining the different uses of jabr, muqābala, ikmāl (completion), and radd (returning) in the worked-out problems of several medieval mathematics texts, we show that they are really nontechnical words used to name the immediate goals of particular steps. We also find that the phrase al-jabr wa'l-muqābala was first used within the solutions of problems to mean al-jabr and/or al-muqābala, and from there it became the name of the art of algebra. |
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Keywords: | 01A30 |
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