Perturbations of isolated part of definite spectrum for \(G\)-selfadjoint operators and selfadjoint operator polynomials

DOI10.1007/BF01203916zbMath0840.47005OpenAlexW2091740637MaRDI QIDQ1906905

Yanyan Li

Publication date: 9 July 1996

Published in: Integral Equations and Operator Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01203916

zbMATH Keywords

spectrumcompact perturbationbounded invertible selfadjoint operatorperturbation problems for selfadjoint operator polynomials

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) Linear operators on spaces with an indefinite metric (47B50)

Cites Work

• Definitizable operators and quasihyperbolic operator polynomials
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