Traité des triangles rectangles en nombres, dans lequel plusieurs belles proprietés de ces triangles sont démontrées par de nouveaux principes.
Paris: Estienne Michallet, 1676. First edition, very rare, Henry Cavendish’s copy, of this early treatise on number theory, containing results Frenicle had probably obtained by correspondence with Fermat, including the proof of the first case of Fermat’s last theorem to be published. “During the first half of the seventeenth century..... More
Item #6170