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On a special trigonometric series and its applications. (Russian) Zbl 0665.42003
The author announces results showing that his earlier results [Anal. Math. 8, 79-102 (1982; Zbl 0248.35100)] relating to the degree of approximation of a continuous $$2\pi$$-periodic function pertaining to a special class by the sequence of partial sums of its Fourier series and by the Cesaro mean of this sequence are best possible.
Reviewer: M.S.Rangachari

##### MSC:
 42A10 Trigonometric approximation
##### Keywords:
degree of approximation; Cesaro mean
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