Definite invariant subspaces and the structure of the spectrum of a focusing plus-operator

DOI10.1007/BF01082387zbMath0539.47024OpenAlexW2087945371MaRDI QIDQ793965

A. V. Sobolev, Victor A. Khatskevich

Publication date: 1981

Published in: Functional Analysis and its Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf01082387

zbMATH Keywords

contractive mapping principlefocusing opertorsmaximal nonnegative invariant subspace of a plus-operator or of a commutative family of plus-operators

Mathematics Subject Classification ID

Invariant subspaces of linear operators (47A15) Linear operators on spaces with an indefinite metric (47B50)

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Well-posedness of a multipoint problem for equations with operator coefficients

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