Jean le Rond d'Alembert (November 16, 1717 – October 29, 1783) was a French mathematician, mechanician, physicist and philosopher. He was also co-editor with Diderot of the Encyclopédie, the original French encyclopedia. D'Alembert's method for the wave equation is named after him.
Born in Paris, d'Alembert was the illegitimate child of the writer Claudine Guérin de Tencin and the chevalier Louis-Camus Destouches (an artillery officer). Destouches was abroad at the time of d'Alembert's birth, and a couple of days after birth his mother left him on the steps of the Saint-Jean-le-Rond de Paris church. According to custom, he is named after the protecting saint of the church. D'Alembert was placed in an orphanage but was soon adopted by the wife of a glazier. Destouches secretly paid for the education of Jean le Rond, but did not want his parentage officially recognised.
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History :: Math
Classical Mechanics :: Physics
Enlightenment :: Early Modern

Jean-le-Rond D'Alembert (1717 - 1783) - An excerpt from W.W. Rouse Ball's 1908 book, A Short History of Mathematics. Emphasizes D'Alembert's work in calculus and fluid dynamics.
MacTutor History of Mathematics: D'Alembert - Biography of this noted French thinker by J.J. O'Connor and E.F. Robinson. Includes links to related thinkers in the mathematical tradition.
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Preliminary Discourse to the Encyclopedia of Diderot - D'Alembert's foreword to this French Enlightenment classic, translated by Richard Hooker.
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