On a paper of S. Zahid Ali Zenei. (English) Zbl 1019.42003
The author gives correct formulations of two theorems of S. Zahid Ali Zenei [Tamkang J. Math. 21, No. 4, 295-301 (1990; Zbl 0735.42003)] and short proofs of these theorems.
Reviewer: S.M.Mazhar (Kuwait)
MSC:
42A20 | Convergence and absolute convergence of Fourier and trigonometric series |
26D15 | Inequalities for sums, series and integrals |