No abstract

No abstract

Abstract. Let G = n,°l0 Z(P¡) De me countable product of discrete cyclic groups of order p¡. We assume that sup/>0/>, < oo. We consider Walsh-

No abstract

Abstract.We give another proof of a theorem of Strömberg for the FeffermanStein sharp maximal functions. Our method is based on a decomposition lemma which is due to the arguments of Carleson, Garnett and Jones for the functions of BMO, and it is valid for a two-weight setting under a condition which is equivalent to the Aoo condition in the case of equal weights.