Mathematical Sciences Classification System
35Pxx - Spectral theory and eigenvalue problems
[See also 47Axx, 47Bxx, 47F05]
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35P05General topics in linear spectral theory
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35P10Completeness of eigenfunctions, eigenfunction expansions
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35P15Estimation of eigenvalues, upper and lower bounds
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35P20Asymptotic distribution of eigenvalues and eigenfunctions
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35P25Scattering theory [See also 47A40]
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35P30Nonlinear eigenvalue problems, nonlinear spectral theory
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35P99None of the above, but in this section