scientific article; zbMATH DE number 6440936
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Publication:5253857
zbMath1324.35128MaRDI QIDQ5253857
Publication date: 28 May 2015
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Singular perturbations in context of PDEs (35B25) General topics in linear spectral theory for PDEs (35P05) Completeness of eigenfunctions and eigenfunction expansions in context of PDEs (35P10) Asymptotic distributions of eigenvalues in context of PDEs (35P20) PDEs on graphs and networks (ramified or polygonal spaces) (35R02)