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A Beurling-Carleson set which is a uniqueness set for a given weighted space of analytic functions
Author:
Cyril Agrafeuil
Journal:
Proc. Amer. Math. Soc. 134 (2006), 3287-3294
MSC (2000):
Primary 30C15, 30H05
Posted:
May 8, 2006
MathSciNet review:
2231913
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Abstract: Let be a sequence of positive real numbers. We define as the space of functions which are analytic in the unit disc , continuous on and such that where is the Fourier coefficient of the restriction of to the unit circle . Let be a closed subset of . We say that is a Beurling-Carleson set if where denotes the distance between and . In 1980, A. Atzmon asked whether there exists a sequence of positive real numbers such that for all and that has the following property: for every Beurling-Carleson set , there exists a non-zero function in that vanishes on . In this note, we give a negative answer to this question.
References
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A. Atzmon, Boundary values of absolutely convergent Taylor series, Annals of Math. 111 (1980), 231-237. MR 0569071 (81j:30008)
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L. Carleson, Sets of uniqueness for functions regular in the unit circle, Acta. Math. 87 (1952), 325-345. MR 0050011 (14:261a)
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J. P. Kahane, R. Salem, ``Ensembles parfaits et séries trigonométriques'', Paris, Hermann, 1963. MR 0160065 (28:3279)
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B. I. Korenblyum, Closed ideals in the ring
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V. S. Korolevich, On a theorem of Beurling and Carleson, Ukr. Math. J. 22 (1970), 710-714 (1971). MR 0289785 (44:6972)
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B. A. Taylor and D. L. Williams, Ideals in rings of analytic functions with smooth boundary values, Canad. J. Math. 22 (1970), 1266-1283. MR 0273024 (42:7905)
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Additional Information
Cyril Agrafeuil
Affiliation:
LaBAG, CNRS-UMR 5467, Université Bordeaux I, 351 cours de la Libération, 33451 Talence, France
Address at time of publication:
LATP, Faculté des Sciences de Saint-Jérôme, Bâtiment Henri Poincaré, Cour A, 13397 Marseille cedex 20, France
Email:
Cyril.Agrafeuil@math.u-bordeaux.fr
DOI:
http://dx.doi.org/10.1090/S0002-9939-06-08399-7
PII:
S 0002-9939(06)08399-7
Keywords:
Boundary zero of analytic functions,
sets of uniqueness,
spaces of analytic functions,
Beurling-Carleson sets
Received by editor(s):
September 23, 2004
Received by editor(s) in revised form:
May 26, 2005
Posted:
May 8, 2006
Communicated by:
David R. Larson
Article copyright:
© Copyright 2006 American Mathematical Society
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