FK spaces, their duals and the visualisation of neighbourhoods.
On the Gaussian and mean curvature of certain surfaces.
Solutions of some visibility and contour problems in the visualisation of surfaces.
Measure of noncompactness of operators and matrices on the spaces and .
Absolute and Ordinary Köthe-Toeplitz Duals of Some Sets of Sequences and Matrix Transformations
Recent Results in the Theory of Matrix Transformations in Sequence Spaces
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.
Some -sequence spaces defined by a modulus
The main object of this paper is to introduce and study some sequence spaces which arise from the notation of generalized de la Vallée–Poussin means and the concept of a modulus function.
A Software for the Visualisationof Differential Geometry
An IntroduCtion into the Theory of Sequence Spaces and Measures of Noncompactness
Mixed Norm Spaces of Difference Sequences and Matrix Transformations
The space bv(p), its β-dual and matrix transformations.
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