Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-24T15:55:35.334Z Has data issue: false hasContentIssue false

On a Generalization of a Theorem of Wiener

Published online by Cambridge University Press:  20 November 2018

Jamil A. Siddiqi*
Affiliation:
Université de Sherbrooke, Sherbrooke, Québec
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Let V[0, 2π] denote the class of all normalized functions F of bounded variation in [0, 2π] such that F(x) = 2-1{F(x+0)+F(x-0)} and F(x+2π)-F(x) = F(2π) — F(0) for all x and let {Cn} be the sequence of Fourier-Stieltjes coefficients of F. Wiener [9] (cf. Bari [1, p. 212], Zygmund [10, p. 108]) proved the following theorem.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1972

References

1. Bari, N., A treatise on trigonometric series, Vol. 1, Pergamon Press, New York, 1964.Google Scholar
2. Brillhart, J. and Carlitz, L., Note on the Shapiro polynomials, Proc. Amer. Math. Soc. 25 (1970), 114-118.Google Scholar
3. Hardy, G. H., Divergent series, Clarendon Press, Oxford, 1949.Google Scholar
4. Lozinskiǐ, S. M., On a theorem of N. Wiener, Dokl. Akad. Nau. SSSR. 48 (1945), 542-545.Google Scholar
5. Matveev, V. A., On the theorems of Wiener and Lozinskiǐ, Studies contemporary problems constructive theory of functions (Russian) Proc. Second All-Union Conf., Baku, 1962, 460-468. Akad. Nauk Azerbaǐdžan. SSR Dokl. 1965.Google Scholar
6. Rudin, W., Some theorems on Fourier coefficients, Proc. Amer. Math. Soc. 10 (1959), 855-859.Google Scholar
7. Siddiqi, J. A., Coefficient properties of certain Fourier series, Math. Ann. 181 (1969), 242-254.Google Scholar
8. Siddiqi, J. A., On mean values for almost periodic functions, Arch. Math. 20 (1969), 648-655.Google Scholar
9. Wiener, N., The quadratic variation of a function and its Fourier coefficients, Mass. J. Math. 3 (1924), 72-94.Google Scholar
10. Zygmund, A., Trigonometric series vol. 1, Cambridge Univ. Press, New York, 1959.Google Scholar