Bound on deviations of continuous periodic functions from their de la Vallée-Poussin sums

  • A. A. Zakharov
Article
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Abstract

We show that
$$|f(x) - V_{n,m} (f,x)| \leqslant \frac{C}{{m + 1}}\sum\nolimits_{h = n - m}^n {E_k [1 + In\left( {\frac{{n - m}}{{h - n + m + 1}}} \right)],}$$
for every continuous function with period 2Μ, where C is an absolute constant and 0 ≤ m ≤ n, and we then apply this bound.

Keywords

Continuous Function Periodic Function Absolute Constant Continuous Periodic Function 
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Copyright information

© Consultants Bureau 1968

Authors and Affiliations

  • A. A. Zakharov
    • 1
  1. 1.V. A. Steklov Mathematical InstituteAcademy of Sciences of the USSRMoscow

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