Savaş, Ekrem2015-09-152015-09-1520071025-5834https://hdl.handle.net/11467/1190http://dx.doi.org/10.1155/2007/86095We obtain sufficient conditions on a nonnegative lower triangular matrix A and a sequence lambda(n) for the series Sigma a(n)lambda(n)/na(nn) to be absolutely summable of order k >= 1 by A. Copyright (c) 2007 E. Savas, and B. E. Rhoades.eninfo:eu-repo/semantics/openAccessArticle18Q3WOS:000248457300001Q22-s2.0-3425084500910.1155/2007/86095