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On the extension of a theorem of Stein and Weiss and its application 

Authors: Ivan H. Feschiev ab; Snezhana G. Gocheva-Ilieva ab
Affiliations:   a Faculty of Mathematics and Informatics, Plovdiv University “Paisii Hilendarski”, Plovdiv, Bulgaria
b Communicated by D-C Chang,
DOI: 10.1080/02781070410001731684
Publication Frequency: 12 issues per year
Published in: journal Complex Variables and Elliptic Equations, Volume 49, Issue 10 August 2004 , pages 711 - 730
Number of References: 6
Formats available: HTML (English) : PDF (English)
Previously published as: Complex Variables, Theory and Application: An International Journal (0278-1077, 1563-5066) until 2006
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Abstract

In this paper there is proved a generalization of a theorem of Stein and Weiss concerning metric properties of the conjugate characteristic functions of given sets on the interval [0, 2π]. As an application for the Hilbert transform of a bounded function, the optimal correlation  GCOV0711ueq001 where the Favard's constant  GCOV0711math001:  GCOV0711ueq002 is also established.
Keywords: Fourier series; Conjugate characteristic functions; Lebesgue's measure; Optimal correlation; Upper estimation; 1991 Mathematics Subject Classification: Primary 42A50; Secondary 28A25
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