-factors and -factors for near quasi-norm on certain sequence spaces.
Mappings of positive integers and subspaces of m
Matrix transformations and almost convergence
Matrix transformations between the sequence space Bv^p and certain bk spaces
Matrix transformations between the spaces of Cesàro sequences and invariant means.
Matrix transformations involving analytic sequence spaces.
Matrix transformations involving analytic sequence spaces (Errata).
Matrix transformations on nuclear Köthe spaces
Matrixtransformationen dualer Folgenräume.
Matrixtransformationen von unvollstl;ndigen Folgenräumen.
Measure of noncompactness of linear operators between spaces of sequences that are summable or bounded
In this paper we investigate linear operators between arbitrary BK spaces and spaces of sequences that are summable or bounded. We give necessary and sufficient conditions for infinite matrices to map into . Further, the Hausdorff measure of noncompactness is applied to give necessary and sufficient conditions for to be a compact operator.
Measure of noncompactness of subsets of Lebesgue spaces
Measures of noncompactness in Banach sequence spaces
Mixed Norm Spaces of Difference Sequences and Matrix Transformations
Multilinear forms in Pareto-like random variables and product random measures
Multilinear Hölder-type inequalities on Lorentz sequence spaces
We establish Hölder-type inequalities for Lorentz sequence spaces and their duals. In order to achieve these and some related inequalities, we study diagonal multilinear forms in general sequence spaces, and obtain estimates for their norms. We also consider norms of multilinear forms in different Banach multilinear ideals.
Multipliers of mixed-norm sequence spaces and measures of noncompactness.