Savaş, Ekrem2015-09-112015-09-1120101029-242Xhttps://hdl.handle.net/11467/1175http://dx.doi.org/10.1155/2010/105136We establish a summability factor theorem for summability vertical bar A, delta vertical bar(k), where A is lower triangular matrix with nonnegative entries satisfying certain conditions. This paper is an extension of the main result of the work by Rhoades and Savas (2006) by using quasi f-increasing sequences.eninfo:eu-repo/semantics/openAccessA summability factor theorem for quasi-power-increasing sequencesArticle110Q1WOS:000285612100001Q22-s2.0-78650738546