scientific article; zbMATH DE number 3641825

zbMath0413.31004MaRDI QIDQ4201055

Horst Teschke

Publication date: 1978

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

Helmholtz equationharmonic functionsjump relationsmetaharmonic functionsdomains with piecewise continuous boundary

Mathematics Subject Classification ID

Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis (42C05) Harmonic, subharmonic, superharmonic functions in higher dimensions (31B05) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05) Hilbert spaces of continuous, differentiable or analytic functions (46E20) Boundary behavior of harmonic functions in higher dimensions (31B25) Fourier coefficients, Fourier series of functions with special properties, special Fourier series (42A16) Completeness of sets of functions in nontrigonometric harmonic analysis (42C30) Inner product spaces and their generalizations, Hilbert spaces (46C99) Boundary value and inverse problems for harmonic functions in higher dimensions (31B20) Completeness of sets of functions in one variable harmonic analysis (42A65)

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Approximation mittels Linearkombinationen von Fundamentallösungen elliptischer Differentialoperatoren ⋮ A Unified Approach to Estimation of Lower Bounds for the First Eigenvalue of Several Elliptic Boundary Value Problems

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