Mathematical Sciences Classification System
34Lxx - Ordinary differential operators
[See also 47E05]
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34L05General spectral theory
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34L10Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions
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34L15Eigenvalues, estimation of eigenvalues, upper and lower bounds
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34L16Numerical approximation of eigenvalues and of other parts of the spectrum
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34L20Asymptotic distribution of eigenvalues, asymptotic theory of eigenfunctions
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34L25Scattering theory, inverse scattering
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34L30Nonlinear ordinary differential operators
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34L40Particular operators (Dirac, one-dimensional Schrödinger, etc.)
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34L99None of the above, but in this section