ON TWO PROBLEMS OF LEINDLER

被引：1

作者：

谢庭藩 ^{[1
]}

机构：

[1] Hangzhou University

来源：

A Monthly Journal of Science | 1984年 / 04期

关键词：

In; ON TWO PROBLEMS OF LEINDLER;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Let f(x) be a continuous function with 2π-period i. e. f∈C, and let a/2+ sum form k=1 to ∞ (acoskx+bsinkx) (1) be its Fourier series. S(f)=S(f,x) denotes the n-th partial sum of (1), and E(f), the best approximation of f by trigonometric polynomials of order at most n. L. Leindler in his recent paper raised the following two problems. (Ⅰ) Let p>0 and let r be a nonnegative integer. Is condition

引用

页码：437 / 442

页数：6

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