scientific article
zbMath0543.35001MaRDI QIDQ3331581
Publication date: 1984
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
existencewave equationuniquenessvariational principleexterior domainLaplace equationinitial-boundary value problemsHuygens principlewave operatorspectral theoremmathematical physicsKirchhoff law
General topics in linear spectral theory for PDEs (35P05) Wave equation (35L05) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05) Partial differential equations of mathematical physics and other areas of application (35Q99) Variational principles of physics (49S05) Introductory exposition (textbooks, tutorial papers, etc.) pertaining to partial differential equations (35-01)
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