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This article is cited in 12 scientific papers (total in 12 papers)
Everywhere Divergent
$\Phi$-Means of Fourier Series
G. A. Karagulian Institute of Mathematics, National Academy of Sciences of Armenia
Abstract:
For a function $f\in L^1({\mathbb T})$, we investigate the sequence
$(C,1)$ of mean values $\Phi(|S_k(x,f)-f(x)|)$, where $\Phi
(t)\colon [0,+\infty)\to [0,+\nobreak \infty)$, $\Phi (0)=\nobreak 0$, is a
continuous increasing function. We prove that if $\Phi $ increases faster
than exponentially, then these means can diverge everywhere. Divergence
almost everywhere of such means was established earlier.
Keywords:
Fourier series, means of Fourier series, the space $L^1({\mathbf T})$.
Received: 28.04.2005 Revised: 07.10.2005
Citation:
G. A. Karagulian, “Everywhere Divergent
$\Phi$-Means of Fourier Series”, Mat. Zametki, 80:1 (2006), 50–59; Math. Notes, 80:1 (2006), 47–56
Linking options:
https://www.mathnet.ru/eng/mzm2779https://doi.org/10.4213/mzm2779 https://www.mathnet.ru/eng/mzm/v80/i1/p50
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Abstract page: | 551 | Full-text PDF : | 237 | References: | 96 | First page: | 2 |
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