On generalized absolute summability factors for a triangular matrix

In this paper, we establish a summability factor theorem for summability ∣A, δ∣k as defined in (2). This paper is an extension of the main result of Savaş and Rhoades [Savaş E, Rhoades B. On absolute summability factors for a triangular matrix. Int J Diff Equat 2006;1:155–63].