Operators and Matrices · Volume 14, Issue 1 On the boundedness of subsequences of Vilenkin-Fejér means on the martingale Hardy spaces 14-22 Pages 283-294 DOI 10.7153/oam-2020-14-22 Downloads Short PDF Full PDF PNG Authors Lars-Erik Persson George Tephnadze Georgi Tutberidze Keywords Vilenkin system Vilenkin group Vilenkin-Fejér means martingale Hardy space maximal operator Vilenkin-Fourier series Subject classes 42C10 42B25