Fourier Analysis and Its Applications

Fourier Analysis and Its Applications

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This book presents the theory and applications of Fourier series and integrals, eigenfunction expansions, and related topics, on a level suitable for advanced undergraduates. It includes material on Bessel functions, orthogonal polynomials, and Laplace transforms, and it concludes with chapters on generalized functions and Green's functions for ordinary and partial differential equations. The book deals almost exclusively with aspects of these subjects that are useful in physics and engineering, and includes a wide variety of applications. On the theoretical side, it uses ideas from modern analysis to develop the concepts and reasoning behind the techniques without getting bogged down in the technicalities of rigorous proofs.In a similar way we can solve the Dirichlet problem in an annulus A = {(rcos0, rsin0) : r0 alt; r alt; rx, 8 arbitrary}, namely, urr + r~1ur + r-2uge = 0 in A, u(rx, 8) = f{8), u(r0, 8) = g(8). The boundary conditions at 8 a€” 0 and S = 0 are now replaced by theanbsp;...

Title:Fourier Analysis and Its Applications
Author:G. B. Folland
Publisher:American Mathematical Soc. - 1992


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