Strong convergence theorems for two-parameter Walsh-Fourier and trigonometric-Fourier series
Volume 117 / 1996
Studia Mathematica 117 (1996), 173-194
DOI: 10.4064/sm-117-2-173-194
Abstract
The martingale Hardy space $H_p([0,1)^2)$ and the classical Hardy space $H_p(