Savaş, EkremŞevli, HamdullahRhoades, B.E.2020-11-212020-11-2120090035-7596https://doi.org/10.1216/RMJ-2009-39-2-633https://hdl.handle.net/11467/3522A factorable matrix A is a lower triangular matrix with entries a nk = a nb k. The sequence space A k is defined in (2). In this paper we determine sufficient conditions for a nonnegative factorable matrix A to be a bounded operator on A k, i.e., A ? B(A k)- As corollaries we obtain sufficient conditions for the discrete Cesáro, terraced, and p-Cesáro matrices defined by Rhaly, to be in B(A k) Copyright © 2009 Rocky Mountain Mathematics Consortium.eninfo:eu-repo/semantics/openAccessA k spacesBounded operatorFactorable matricesRhaly matricesArticle392633644Q4WOS:000269957300018Q22-s2.0-6764999507310.1216/RMJ-2009-39-2-633