A counterexample for H∞ approximable functions

Let be the unit disk. We show that for some relatively closed set F ⊂ there is a function f that can be uniformly approximated on F by functions of H∞, but such that f cannot be written as f = h + g, with h ∈ H∞ and g uniformly continuous on F. This answers a question of Stray. © 2000 American Mathe...

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Autor principal: Suárez, D.
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00029939_v128_n10_p3003_Suarez
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spelling todo:paper_00029939_v128_n10_p3003_Suarez2023-10-03T13:55:04Z A counterexample for H∞ approximable functions Suárez, D. Bounded analytic functions Uniform approximation Let be the unit disk. We show that for some relatively closed set F ⊂ there is a function f that can be uniformly approximated on F by functions of H∞, but such that f cannot be written as f = h + g, with h ∈ H∞ and g uniformly continuous on F. This answers a question of Stray. © 2000 American Mathematical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00029939_v128_n10_p3003_Suarez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bounded analytic functions
Uniform approximation
spellingShingle Bounded analytic functions
Uniform approximation
Suárez, D.
A counterexample for H∞ approximable functions
topic_facet Bounded analytic functions
Uniform approximation
description Let be the unit disk. We show that for some relatively closed set F ⊂ there is a function f that can be uniformly approximated on F by functions of H∞, but such that f cannot be written as f = h + g, with h ∈ H∞ and g uniformly continuous on F. This answers a question of Stray. © 2000 American Mathematical Society.
format JOUR
author Suárez, D.
author_facet Suárez, D.
author_sort Suárez, D.
title A counterexample for H∞ approximable functions
title_short A counterexample for H∞ approximable functions
title_full A counterexample for H∞ approximable functions
title_fullStr A counterexample for H∞ approximable functions
title_full_unstemmed A counterexample for H∞ approximable functions
title_sort counterexample for h∞ approximable functions
url http://hdl.handle.net/20.500.12110/paper_00029939_v128_n10_p3003_Suarez
work_keys_str_mv AT suarezd acounterexampleforhapproximablefunctions
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