Instability of singular critical points of definitizable operators

DOI10.1007/BF01198796zbMath0897.47031OpenAlexW2031205538WikidataQ124629951 ScholiaQ124629951MaRDI QIDQ1378077

Branko Najman, Heinz K. Langer

Publication date: 5 February 1998

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

Full work available at URL: https://doi.org/10.1007/bf01198796

zbMATH Keywords

finite rank nonnegative perturbationselfadjoint definitizable operator in a Krein spacesingular critical points

Mathematics Subject Classification ID

Perturbation theory of linear operators (47A55) Linear operators on spaces with an indefinite metric (47B50)

Cites Work

• A model for \(\pi\)-selfadjoint operators in \(\pi _ 1\)-spaces and a special linear pencil
• Matrices and indefinite scalar products
• A Variational Principle in Krein Space
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