scientific article; zbMATH DE number 3079858

zbMath0050.32003MaRDI QIDQ5818727

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Publication date: 1953

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zbMATH Keywords

estimatesmodulus of characteristic functions

Mathematics Subject Classification ID

Completeness of eigenfunctions and eigenfunction expansions in context of PDEs (35P10)

Related Items (3)

Spectral stability of general non-negative selfadjoint operators with applications to Neumann-type operators ⋮ Estimates for eigenfunctions of elliptic operators with respect to the spectral parameter ⋮ Spectral stability of Dirichlet second order uniformly elliptic operators

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