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Diophantus (flourished c. ce 250) was a Greek mathematician, famous for his work in algebra. What little is known of Diophantus’s life is circumstantial. From the appellation “of Alexandria” it seems that he worked in the main scientific centre of the ancient Greek world; and because he is not mentioned before the 4th century, it seems likely that he flourished during the 3rd century. An arithmetic epigram from the Anthologia Graeca of late antiquity, purported...