The Solution Sets of Extremal Problems in H 1

DOI10.2307/2045546zbMath0565.30031OpenAlexW4239552248MaRDI QIDQ3679468

Eric Hayashi

Publication date: 1985

Published in: Proceedings of the American Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/2045546

zbMATH Keywords

exposed pointsHankel operatorToeplitz operatorextremal problemsinner functionouter functionHardy space \(H^ 1\)

Mathematics Subject Classification ID

Related Items (18)

Complétude des noyaux reproduisants dans les espaces modèles. (Completeness of reproducing kernels in the model spaces) ⋮ The kernel of a Toeplitz operator ⋮ An example of a non-exposed extreme function in the unit ball of H¹ ⋮ Existence of solutions of extremal problems in H¹ ⋮ Sum of two inner functions and exposed points in H¹ ⋮ Real complex functions ⋮ Kernels of Toeplitz operators via Bourgain's factorization theorem ⋮ Absolute values and real parts for functions in the Smirnov class ⋮ Verblunsky coefficients and Nehari sequences ⋮ Extremal properties of the unit ball in \(H^ 1\) ⋮ Factorizations of outer functions and extremal problems ⋮ Monotone thematic factorizations of matrix functions ⋮ Kernel of vector-valued Toeplitz operators ⋮ Classification of Nearly Invariant Subspaces of the Backward Shift ⋮ Strongly exposed points, Helson-Szegö weights and Toeplitz operators ⋮ Hankel operators and extremal problems in \(H^ 1\) ⋮ Conjugations preserving Toeplitz kernels ⋮ A characterization of strongly exposed points of the unit ball of \(H^ 1\)

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