Convexity and weak closedness of the image of operator balls under linear-fractional transformations

DOI10.1007/BF02686253zbMath1027.47030OpenAlexW2089112010MaRDI QIDQ1581445

R. Smith

Publication date: 15 January 2004

Published in: Mathematical Notes (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/bf02686253

zbMATH Keywords

Krein spacesfractional functions in Hilbert spacesplus operators

Mathematics Subject Classification ID

Spaces with indefinite inner product (Kre?n spaces, Pontryagin spaces, etc.) (46C20) Linear operators on spaces with an indefinite metric (47B50)

Related Items (1)

Conditional reducibility of certain unbounded nonnegative Hamiltonian operator functions

Cites Work

• Operator fractional-linear transformations: convexity and compactness of image; applications
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