Mathematical and Computational Applications, vol.8, no.1-3, pp.165-172, 2003 (Peer-Reviewed Journal)
In this note , we define and study two concepts which arise from the notion of lacunary strong convergence, and invariant means, namely lacunary strong $sigma$- convergence with respect to an Orlicz function and lacunary a-statistical convergence and established the relationship between these two concepts.