On the convergence of Fej,r means of Walsh-Fourier series in the space H-p

摘要

The main aim of this paper is to find necessary and sufficient conditions for a modulus of continuity of a martingale F a H (p) , for which the Fej,r means of Walsh-Fourier series converge in H (p) -norm, when 0 < p a parts per thousand currency sign 1/2.