Spectral Theory and Differential Operators

1: Linear operators in Banach spaces 2: Entropy numbers, s-numbers, and eigenvalues 3: Unbounded linear operators 4: Sesqilinear forms in Hilbert spaces 5: Sobolve spaces 6: Generalized Dirichlet and Neumann boundary-value problems 7: Second-order differantial operators on arbitary open sets 8: Capacity and compactness criteria 9: Essential spectra 10: Essential spectra of general second-order differential operators 11: Global and asymptotic estimates for the eigenvalues 12: Estimates of the singular values Bibliography

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• Análise funcional e transforma