35Pxx Spectral theory and eigenvalue problems [See also 47Axx, 47Bxx, 47F05]
- 35P05 General topics in linear spectral theory
- 35P10 Completeness of eigenfunctions, eigenfunction expansions
- 35P15 Estimation of eigenvalues, upper and lower bounds
- 35P20 Asymptotic distribution of eigenvalues and eigenfunctions
- 35P25 Scattering theory [See also 47A40]
- 35P30 Nonlinear eigenvalue problems, nonlinear spectral theory
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35P99 None of the above, but in this section
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