Abstract
The solution of boundary value problems using integral transforms is comparatively easy for certain simple regions. There are many important problems, however, where the boundary data is of such a form that although an integral transform may be sensibly taken, it does not lead directly to an explicit solution. A typical problem involves a semi-infinite boundary, and may arise in such fields as electromagnetic theory, hydrodynamics, elasticity, and others. The Wiener-Hopf technique, which gives the solution to many problems of this kind, was first developed systematically by Wiener and Hopf in 1931, although the germ of the idea is contained in earlier work by Carleman. While it is most often used in conjunction with the Fourier transform, it is a significant and natural tool for use with the Laplace and Mellin transforms also. As usual, we develop the method in relation to some illustrative problems.
The Wiener-Hopf technique is mentioned in a number of books; for a comprehensive review of the method see NOBLE (1958).
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Footnotes
This problem may also be solved using the KontorovichLebedev transform: see Sections 17.4–5.
See Section 10.4 for another example of this transformation, which is also discussed at some length in NOBLE (1958), p. 31ff.
See NOBLE (1958), p. 93ff. for a list and some references. In addition to problems in one complex variable, Kraut has considered mixed boundary value problems which may be resolved using a Wiener-Hopf type of decomposition in two complex variables. See E. A. Kraut, Proc. Amer. Math. Soc. (1969), 23, 24, and further references given there.
This relationship holds for a wide class of kernels, of which exp(-1x-yI) is the simplest. See G. A. Baraff, J. Math. Phys. (1970), 11, 1938.
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© 1978 Springer Science+Business Media New York
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Davies, B. (1978). The Wiener-Hopf Technique. In: Integral Transforms and Their Applications. Applied Mathematical Sciences, vol 25. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-5512-1_18
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DOI: https://doi.org/10.1007/978-1-4757-5512-1_18
Publisher Name: Springer, New York, NY
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