In this article, for Banach left and right module actions, we will extend
some propositions from Lau and U¨lger into general situations and we
establish the relationships between topological centers of module actions. We
also introduce the new concepts as Lw∗w-property and Rw∗w-property for
Banach A−bimoduleB and we investigate the relations between them and
topological center of module actions. We have some applications in dual groups.Comment: 15 pag