呼吸 发表于 2025-3-26 22:08:17

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 (a condensed review of these questions is found in §1 of the present paper). Quasi

无法治愈 发表于 2025-3-27 03:16:42

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Trigger-Point 发表于 2025-3-27 07:06:47

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

碎石头 发表于 2025-3-27 13:05:36

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

主讲人 发表于 2025-3-27 14:39:48

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cogitate 发表于 2025-3-27 18:12:31

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侵略 发表于 2025-3-27 22:16:36

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.

Flinch 发表于 2025-3-28 04:13:41

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小官 发表于 2025-3-28 09:57:36

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过渡时期 发表于 2025-3-28 13:03:27

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