Superoptimal singular values and indices of matrix functions

DOI10.1007/BF01205287zbMath0836.30026OpenAlexW1990711696MaRDI QIDQ1341060

N. J. Young, Vladimir V. Peller

Publication date: 2 January 1995

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

Full work available at URL: https://doi.org/10.1007/bf01205287

zbMATH Keywords

superoptimal singular value

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 in the complex plane (30E10)

Related Items (6)

Approximation by analytic matrix functions: The four block problem ⋮ An index formula in connection with meromorphic approximation ⋮ Approximation by analytic operator functions. Factorizations and very badly approximable functions ⋮ Unitary interpolants and factorization indices of matrix functions. ⋮ Invariance properties of thematic factorizations of matrix functions ⋮ Monotone thematic factorizations of matrix functions

Cites Work

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• Infinite Hankel matrices and generalized Caratheodory-Fejer and Riesz problems
• State-space algorithm for the computation of superoptimal matrix interpolating functions
• Generalized Interpolation in H ∞
• A Characterization of Badly Approximable Functions

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