Abstract
In this paper, we find a necessary and sufficient condition for the modulus of continuity for which subsequences of Fejér means with respect to Vilenkin systems are bounded from the Hardy space
H
p
{H_{p}}
to the Lebesgue space
L
p
{L_{p}}
for all
0
<
p
<
1
2
{0<p<\frac{1}{2}}
.
AbstractThe main aim of this paper is to find necessary and sufficient conditions for the convergence of Fejér means in terms of the modulus of continuity on the Hardy spaces