A high-frequency point source of oscillations near a concave mirror. (English) Zbl 0401.35022


35J05 Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation
35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs
35B40 Asymptotic behavior of solutions to PDEs
35P25 Scattering theory for PDEs


Zbl 0345.35030
Full Text: DOI


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[4] V. M. Babich and V. S. Buldyrev, Asymptotic Methods in Diffraction Problems for Short Waves [in Russian], Moscow (1972). · Zbl 0255.35002
[5] V. S. Buslaev, ?Potential theory and geometrical optics,? Zap. Nauchn. Sem. Leningr. Ota. Mat. Inst.,22, 175?180 (1971). · Zbl 0284.35017
[6] A. Erdelyi, Asymptotic Expansions, Dover (1961).
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