Finite rank perturbations in Pontryagin spaces and a Sturm-Liouville problem with \(\lambda\)-rational boundary conditions

DOI10.1007/978-3-319-68849-7_6zbMath1471.47024OpenAlexW2792650158MaRDI QIDQ1626068

Friedrich Philipp, Jussi Behrndt

Publication date: 26 November 2018

Full work available at URL: https://doi.org/10.1007/978-3-319-68849-7_6

zbMATH Keywords

eigenvaluesessential spectrumself-adjointnessalgebraic multiplicityfinite rank perturbationsPontryagin space

Mathematics Subject Classification ID

General spectral theory of ordinary differential operators (34L05) Perturbation theory of linear operators (47A55) Linear operators on spaces with an indefinite metric (47B50)

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