|
This article is cited in 1 scientific paper (total in 1 paper)
Approximation of continuous functions by trigonometric polynomials almost everywhere
T. V. Radoslavova V. A. Steklov Mathematical Institute, USSR Academy of Sciences
Abstract:
We consider the problem of the rate of approximation of continuous 2π-periodic functions of class WrH[ω]C by trigonometric polynomials of order n on sets of total measure. We prove that when r⩾0, ω(δ)δ−1→∞ (δ→0) there exists a function f∈WrH[ω]C such that ˜f∈WrH[ω]C and for any sequence {tn}∞n=1 we have almost everywhere on [0,2π]
¯limn→∞|f(x)−tn(x)|nrω−1(1/n)>Cx>0¯limn→∞|˜f(x)−tn(x)|nrω−1(1/n)>Cx>0
Received: 24.09.1975
Citation:
T. V. Radoslavova, “Approximation of continuous functions by trigonometric polynomials almost everywhere”, Mat. Zametki, 19:1 (1976), 49–62; Math. Notes, 19:1 (1976), 29–36
Linking options:
https://www.mathnet.ru/eng/mzm7722 https://www.mathnet.ru/eng/mzm/v19/i1/p49
|
Statistics & downloads: |
Abstract page: | 233 | Full-text PDF : | 92 | First page: | 1 |
|