Four Lectures on Mathematics, Delivered at Columbia University in 1911 - Hadamard, Jacques, 1865-1963 (Project Gutenberg, 2009)
I. The definition of solutions of linear partial differential equations by boundary conditions -- II. Contemporary researches in differential equations, integral equations, and integro-differential equations -- III. Analysis situs in connection with correspondences and differential equations -- IV. Elementary solutions of partial differential equations and Green's functions.
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Keywords: Differential equations