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zbMath0662.35122MaRDI QIDQ3811091

A. I. Younis, Elsayed M. E. Zayed

Publication date: 1987

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

zbMATH Keywords

eigenvalues Laplace operator shape of a membrane

Mathematics Subject Classification ID

General topics in linear spectral theory for PDEs (35P05) Inverse problems for PDEs (35R30) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05)

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