Point interaction potential approximation for \((-\Delta +U)^{-1}\) and eigenvalues of the Laplacian on wildly perturbed domain
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Publication:1061314
zbMath0569.35061MaRDI QIDQ1061314
Publication date: 1983
Published in: Osaka Journal of Mathematics (Search for Journal in Brave)
singular perturbationsDirichlet conditionssmooth boundaryGreen functionLaplacianperturbation argumentsconvergence of eigenvaluesfine- gained boundary
Estimates of eigenvalues in context of PDEs (35P15) General theory of partial differential operators (47F05) PDEs with low regular coefficients and/or low regular data (35R05) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05)
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