Şevli, HamdullahSavaş, Ekrem2020-11-212020-11-2120110096-3003https://doi.org/10.1016/j.amc.2011.03.068https://hdl.handle.net/11467/3540A lower triangular matrix with nonzero principal diagonal entries is called a triangle. In this paper we obtain the sufficient conditions for ?an?n to be summable Ak whenever ?an is summable Tk for a triangle T. © 2011 Elsevier Inc. All rights reserved.eninfo:eu-repo/semantics/closedAccessAbel summabilityAbsolute summabilitySummability factorTriangular matricesWeighted mean matrixConference Object218310461051Q1WOS:000294298400074Q12-s2.0-8005226460510.1016/j.amc.2011.03.068