APPLIED MATHEMATICS AND COMPUTATION, cilt.218, sa.3, ss.1046-1051, 2011 (SCI-Expanded)
A lower triangular matrix with nonzero principal diagonal entries is called a triangle. In this paper we obtain the sufficient conditions for Sigma a(n)lambda(n) to be summable vertical bar A vertical bar(k) whenever Sigma a(n) is summable vertical bar T vertical bar(k) for a triangle T. (C) 2011 Elsevier Inc. All rights reserved.