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Unformatted text preview: to be printed in Venice by the new Gutenberg method. It contains the first mention of double-entry book-keeping, for which Luca is now known as the "Father of Accounting." Luca's Connections with Leonardo In 1497 Leonardo da Vinci, impressed by the Summa , apparently encouraged Sforza to bring Pacioli to Milan to tutor him in mathematics, geometry, and proportion. They stayed together for 10 years, in Milan and Florence. Pacioli is mentioned several times in Leonardo's notebooks of this period., and Leonardo got his knowledge of perspective from Piero through Pacioli. Luca went to Pisa in 1500 , lectured on Euclid, and in 1509 produced a Latin edition of Euclid, based on Euclid's Thirteenth book of Elements . In his portrait attributed to Jacopo de' Barbieri, Pacioli's hand rests on the Thirteenth book of Euclid....
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- Fall '10