Compactness of matrix operators on some new difference sequence spaces

摘要

The difference sequence spaces c0λ(Δ) and ?∞λ (Δ) have recently been introduced by Mursaleen and Noman (2010) [M. Mursaleen, A.K. Noman, On some new difference sequence spaces of non-absolute type, Math. Comput. Modelling 52 (3-4) (2010) 603-617]. In the present paper, we establish some identities or estimates for the operator norms and the Hausdorff measures of noncompactness of certain matrix operators on the spaces c0λ(Δ) and ?∞λ(Δ). Further, by using the Hausdorff measure of noncompactness, we characterize some classes of compact operators on these spaces.