Prague: J.G. Calve, 1835-36. The memoire in which Cauchy explained the dispersion of light from the undulatory theory of light, and first derived the equation, named after him, relating the refractive index and wavelength of light for a particular transparent material. This memoire was a continuation of his earlier work..... More
Item #2354
Paris: Chez de Bure Frères, 1829. First edition, very rare. Following his earlier textbooks, the Cours d’Analyse (1821) and R sum des Leçons (1823), which provided the first rigorous formulation of the calculus of functions of a real variable, Cauchy in this work for the first time treats complex functions..... More
Item #3696
Paris: de Bure Frères, 1829. First edition, very rare, of Cauchy’s important memoir on the determination of the real roots of polynomial equations. As stated in the ‘Avertissement’, this is a (separately-paginated) offprint from Cauchy’s Exercises de Mathématiques, Quatrième Année, 1829 (journal pagination 65-128). The problem of determining the real..... More
Item #4460
Paris: Plassan, 1822. First edition, extremely rare separately-paginated offprint (journal pagination 161-174), inscribed by Cauchy (1789-1857) to his senior colleague Sylvestre François Lacroix (1765-1843). In this paper Cauchy published for the first time many of the most important results of his great work Mémoire sur les intégrales définies, submitted to..... More
Item #4279
Paris: Chez de Bure Frères, 1825. First edition of this very rare memoir in which “Cauchy began to lay the foundations of the general theory of analytic functions of a complex variable and their integration by residues.” (Landmark Writtings in Western Mathematics, ch. 28). “This paper is considered by many..... More
Item #3163