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On an Estimate of the Partial Sums of Vilenkin-Fourier

Published online by Cambridge University Press:  20 November 2018

Wo-Sang Young*
Affiliation:
Department of Mathematics, University of Alberta, Edmonton, Alberta T6G 2G1
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Abstract

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We show that the partial sums Snf of the Vilenkin-Fourier series of f ∊ L1 are of exponential type off any set where the Hardy-Littlewood maximal function of f is bounded. It then follows that Snkf(x) = o(log log nk) a.e. for any lacunary sequence {nk}. Our results are Vilenkin-Fourier series analogues of those of R. A. Hunt [1].

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1991

References

1. Hunt, R. A., An estimate of the conjugate function, Studia Math. 44 (1972), 371377.Google Scholar
2. Muckenhoupt, B., On inequalities ofCarleson and Hunt. Conference on harmonic analysis in honor of Antoni Zygmund, Vol. I, ed. by W. Beckner, A. P. Calderön, R. Fefferman, P. W. Jones, Wadsworth, Belmont, Calif. 1983,179-185.Google Scholar
3. Simon, P., On a maximal function , Annales Univ. Sci. Budapest. Eötvös, Sect. Math. 21(1978), 41444.Google Scholar
4. Stein, E. M., On limits of sequences of operators, Annals of Math. 74 (1961), 140170.Google Scholar
5. Vilenkin, N. Ja., On a class of complete orthonormal systems, Amer. Math. Soc. Transi. (2)28 (1963), 135.Google Scholar
6. Young, W.-S., Mean convergence of generalized Walsh-Fourier series, Trans. Amer. Math. Soc. 218 (1976), 311320.Google Scholar
7. Young, W.-S., Weighted norm inequalities for Vilenkin-Fourier series, submitted.Google Scholar
8. Zygmund, A., Trigonometric series. Vols. I, II, 2nd éd., Cambridge Univ. Press, New York, 1968.Google Scholar