On sigma-conservative and boundedly sigma-conservative four-dimensional matrices

Recently, Mursaleen and Mohiuddine [M. Mursaleen, S.A. Mohiuddine, Regularly @s-conservative and @s-coercive four-dimensional matrices, Comput. Math. Appl. 56 (2008) 1580-1586] defined and characterized the regularly @s-conservative four-dimensional matrices by using the concept of regular convergence (r-convergence) of double sequences x=(x"j"k). In this paper, we characterize four-dimensional @s-conservative and boundedly @s-conservative matrices corresponding to the concept of p-convergence and boundedly p-convergence of double sequences, respectively.