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"D'ALEMBERT (ALEMBERT), (JEAN le ROND). - LAMBERT, JOHANN HEINRICH.
Reference : 45526
(1770)
Extrait de différentes Lettres de Mr. D'Alembert á Mr. de la Grange (+) Suite de L'Extrait...(+) Suite de L'Extrait...(3 Parts) - Obserbations sur les Diviseurs des Ëquations d'un Degré quelconque qui peuvent etre trouvés indépendamment de la Sol...
(Berlin, Haude et Spener, 1770). 4to. No wrappers, as issued in ""Mémoires de l'Academie Royale des Sciences et Belles-Lettres"", L'Année 1763, tome XIX, , pp. 235-254 + pp. 255-266 + pp. 267-291. Lambert's paper: pp. 292-310.
First printing of all 4 papers. D'Alemberts letters to Lagrange deals with the mathematical treatment of a problem that taxed the minds of the major mathematicians of the day, discussing Bernouilli's and Eulers solutions on the vibrating string. D'Alembert had introduced the wave-equation in physics for the first time in in 1747.Lambert made importent contributions to the theory of equations.
