Isaac ben Moses Eli

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Isaac ben Moses Eli ha-Sefaradi was a fifteenth century Spanish Jewish mathematician, born at Oriola, Aragon.

According to Steinschneider, he may have been one of the Spanish exiles of 1492, probably leaving to Constantinople. He wrote a mathematical work entitled Meleket ha-Mispar, divided into three parts: (1) a theory of numbers, dealing with the first four rules and the extraction of square roots; (2) proportion, etc.; and (3) elementary geometry. The book is an introduction to Euclid, and begins with a definition of the science of figures. [1]

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References

  1. PD-icon.svg Singer, Isidore; Schloessinger, Max (1901–1906). "Isaac ben Moses Eli (ha-Sefaradi)". In Singer, Isidore; et al. (eds.). The Jewish Encyclopedia . New York: Funk & Wagnalls.