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Absolute Values of Toeplitz Operators and Hankel Operators
Published online by Cambridge University Press: 20 November 2018
Abstract
Nehari's theorem for norms of bounded Hankel operators is revisited. Using it, the absolute values of Toeplitz operators are studied. This gives a theorem of Widom and Devinatz for invertible Toeplitz operators.
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- Research Article
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- Copyright © Canadian Mathematical Society 1991
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