Titlebook: Mathematical Problems in Wave Propagation Theory; V. M. Babich Book 1970 Consultants Bureau, New York 1970 elasticity.Helmholtz equation.m

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Eigenfunctions of the Laplace Operator on the Surface of a Triaxial Ellipsoid and in the Region Extn exterior to a triaxial ellipsoid and the eigen-functions of the Laplace operator on the surface of the ellipsoid. Quasi-eigenvalues and -eigenfunctions and also eigenvalues and eigenfunctions mean the same as in [1] (a condensed review of these questions is found in §1 of the present paper). Quasi

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https://doi.org/10.1007/978-1-4757-0334-4elasticity; Helmholtz equation; mathematical physics; solution

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Seminars in mathematicshttp://image.papertrans.cn/m/image/626542.jpg

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The Problem of Constructing Solutions of the Neumann Problem for the Stationary Diffraction of Waveblems of multilayer angular regions and elastic media. One of the typical problems of this class is the Neumann problem for a half space separated by an inclined rectilinear boundary into two angular regions with different wave propagation speeds. The mathematical formulation of this problem is as follows.

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