Pros Thrasydaion

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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

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Mayer Amschel Rothschild (1744-1855), founder of the house of Rothschild; lithograph by Friedrich Lieder, c. 1830.

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Pros Thrasydaion

work by Conon of Samos

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discussed in biography

In Conon of Samos
He also wrote Pros Thrasydaion (“In Reply to Thrasydaeus”), concerning the intersection points of conics with other conics and with circles. None of his works survive.
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