Birthdate: December 6, 1607
Sun Sign: Sagittarius
Birthplace: Beaumont-de-Lomagne, France
Died: January 12, 1665
Pierre de Fermat, a French mathematician, made significant contributions to infinitesimal calculus and the adequality technique. He devised a method for determining the maximum and minimum values of curves resembling differential calculus. Fermat’s work also impacted analytic geometry, probability, and optics. He is well-known for Fermat’s principle of light propagation and his Last Theorem in number theory, famously written in the margin of Diophantus’ Arithmetica. In addition to his mathematical endeavors, Fermat practiced law at the Parlement of Toulouse, France.
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