Savaş, EkremŞevli, Hamdullah2015-09-142015-09-1420091029-242Xhttps://hdl.handle.net/11467/1182http://dx.doi.org/10.1155/2009/675403We prove two theorems on vertical bar A,delta vertical bar(k), k >= 1,0 <= delta < 1/k, summability factors for an infinite series by using quasi-power increasing sequences. We obtain sufficient conditions for Sigma a(n)lambda(n) to be summable vertical bar A,delta vertical bar(k), k >= 1, 0 <= delta < 1/k, by using quasi-f-increasing sequences. Copyright (C) 2009 E. Savas, and H. Sevli.eninfo:eu-repo/semantics/openAccessArticle110Q2WOS:000270606800001Q22-s2.0-7034921827310.1155/2009/675403