%0 Journal Article %A Moreno Pulido, Soledad %A Barbieri, Giuseppina %A León Saavedra, Fernando %A Pérez Fernández, Francisco Javier %A Sala Pérez, Antonio %T Characterizations of a Banach Space through the Strong Lacunary and the Lacunary Statistical Summabilities %D 2020 %@ 2227-7390 %U http://hdl.handle.net/10498/23592 %X In this manuscript we characterize the completeness of a normed space through the strong lacunary (N-theta) and lacunary statistical convergence (S-theta) of series. A new characterization of weakly unconditionally Cauchy series through N-theta and S-theta is obtained. We also relate the summability spaces associated with these summabilities with the strong p-Cesaro convergence summability space. %K lacunary statistical summability %K strong lacunary summability %K weak unconditionally Cauchy series %~ Universidad de Cádiz