Perturbations of selfadjoint operators with point spectra by restrictions and selfadjoint extensions

DOI10.1007/BF01450800zbMath0443.47024MaRDI QIDQ1144256

Konrad Schmüdgen

Publication date: 1981

Published in: Mathematische Annalen (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/163508

zbMATH Keywords

diagonal operatordefect indicesselfadjoint extensions

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25) Invariant subspaces of linear operators (47A15)

Related Items (1)

On the Heisenberg commutation relation. II

Cites Work

• On the Heisenberg commutation relation. II
• On a Problem of Weyl in the Theory of Singular Sturm-Liouville Equations
• On the perturbation of spectra
• Über eine Abschätzung von Mathieu
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