Logarithmic means \dots]{On the Nörlund logarithmic means with respect to Vilenkin system in the martingale Hardy space $H_1$

L. -E. Persson, G. Tephnadze, P. Wall

In this paper we prove and discuss a new divergence result of Nörlund logarithmic means with respect to Vilenkin system in Hardy space $H_1.$