Approximation problems for generalized Schur functions in a neighborhood of \(1\)

DOI10.1134/S0001434607070164zbMath1219.30016OpenAlexW1997426179MaRDI QIDQ635548

E. N. Andreishcheva

Publication date: 20 August 2011

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

Full work available at URL: https://doi.org/10.1134/s0001434607070164

zbMATH Keywords

Hilbert spaceNevanlinna functionPontryagin spacecontraction operatorCayley-Neumann transformgeneralised Schur function

Mathematics Subject Classification ID

Linear operator methods in interpolation, moment and extension problems (47A57) Spaces with indefinite inner product (Kre?n spaces, Pontryagin spaces, etc.) (46C20) Moment problems and interpolation problems in the complex plane (30E05) Linear operators on spaces with an indefinite metric (47B50) Operator colligations (= nodes), vessels, linear systems, characteristic functions, realizations, etc. (47A48)

Cites Work

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• Über einige Fortsetzungsprobleme, die eng mit der Theorie hermitescher Operatoren im RaumeIIx zusammenhängen. I. Einige Funktionenklassen und ihre Darstellungen

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