Superoptimal singular values and indices of infinite matrix functions

DOI10.1512/iumj.1995.44.1986zbMath0843.47007OpenAlexW2060935620MaRDI QIDQ4844823

S. R. Treil', Vladimir V. Peller

Publication date: 18 August 1996

Published in: Indiana University Mathematics Journal (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1512/iumj.1995.44.1986

zbMATH Keywords

superoptimal approximationHankel operatorsingular valuesbest approximations of a bounded operator-valued functionthematic factorization

Mathematics Subject Classification ID

Toeplitz operators, Hankel operators, Wiener-Hopf operators (47B35) Functions whose values are linear operators (operator- and matrix-valued functions, etc., including analytic and meromorphic ones) (47A56) Approximation by rational functions (41A20) Linear operator approximation theory (47A58)

Related Items (2)

Approximation by analytic operator functions. Factorizations and very badly approximable functions ⋮ Invariance properties of thematic factorizations of matrix functions

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