The generalization of the Keldysh theorem

DOI10.1016/0022-247X(91)90175-YzbMath0774.47003WikidataQ60060303 ScholiaQ60060303MaRDI QIDQ1192752

Milutin R. Dostanić

Publication date: 27 September 1992

Published in: Journal of Mathematical Analysis and Applications (Search for Journal in Brave)

zbMATH Keywords

completeness of a system of root vectors of a weakly perturbed \(m\)- sectorial compact operator with nontrivial kernel

Mathematics Subject Classification ID

Several-variable operator theory (spectral, Fredholm, etc.) (47A13) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) (Generalized) eigenfunction expansions of linear operators; rigged Hilbert spaces (47A70)

Cites Work

• On the relative completeness of the generalized eigenvectors of elliptic eigenvalue problems with indefinite weight functions
• Interpolation zwischen den Klassen 𝔖_p von Operatoren in Hilberträumen
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