Original scientific paper
Necessary and sufficient condition for $L^1$-convergence of cosine trigonometric series with δ-quasimonotone coefficients
Ž. Tomovski
Abstract
For a cosine trigonometric series with coefficients in the class
S_p(δ), 1 < p ≤ 2, the necessary and sufficient condition for
L^1 -convergence is obtained.
Keywords
δ-quasi-monotone sequence; cosine trigonometric series; Fourier series; Dirichlet kernel; Abel's transformation; Holder inequality; Hausdorff-Young inequality; L^1-convergence of Fourier series
Hrčak ID:
875
URI
Publication date:
11.12.1999.
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