On Density and Approximation Properties of Special Solutions of the Helmohltz Equation

DOI10.1002/zamm.19920720711zbMath0796.35027OpenAlexW1996718688MaRDI QIDQ4695166

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Publication date: 19 September 1994

Published in: ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1002/zamm.19920720711

zbMATH Keywords

separation of variablesdefect-minimization methodsdensity and approximation properties

Mathematics Subject Classification ID

Completeness of eigenfunctions and eigenfunction expansions in context of PDEs (35P10) Theoretical approximation in context of PDEs (35A35) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05)

Cites Work

• Die C-Vollständigkeit partikulaerer Lösungssysteme der Schwingungsgleichung Delta U + \(k^ 2\) U = 0
• Bounding Eigenvalues of Elliptic Operators
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