Results 21 to 30 of about 20,884 (264)
Calculations on Matrix Transformations Involving an Infinite Tridiagonal Matrix
Axioms, 2021 Given any sequence z=znn≥1 of positive real numbers and any set E of complex sequences, we write Ez for the set of all sequences y=ynn≥1 such that y/z=yn/znn≥1∈E; in particular, sz0 denotes the set of all sequences y such that y/z tends to zero. Here, we
Ali Fares, Ali Ayad, Bruno de Malafosse
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Two methods for the characterization of compact operators between BK spaces [PDF]
Banach Journal of Mathematical Analysis, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Malkowsky, Eberhard +2 more
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Characterizations of Matrix and Compact Operators on BK Spaces
Universal Journal of Mathematics and Applications, 2023 In the present paper, by estimating operator norms, we give some characterizations of infinite matrix classes $\left( \left\vert E_{\mu }^{r}\right\vert _{q},\Lambda\right) $ and $\left( \left\vert E_{\mu }^{r}\right\vert _{\infty },\Lambda\right) $, where the absolute spaces $\ \left\vert E_{\mu }^{r}\right\vert _{q},$ $\left\vert E_{\mu }^{r}\right ...
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On β-dual of vector-valued sequence spaces of Maddox
International Journal of Mathematics and Mathematical Sciences, 2002 The β-dual of a vector-valued sequence space is defined and studied. We show that if an X-valued sequence space E is a BK-space having AK property, then the dual space of E and its β-dual are isometrically isomorphic.
Suthep Suantai, Winate Sanhan
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Matrix transformations between the sequence space BVP and certain BK spaces
Bulletin: Classe des sciences mathematiques et natturalles, 2002 In this paper, we characterize matrix transformations between the sequence space bvp (1 < p < ?) and certain BK spaces. Further?more, we apply the Hausdorff measure of noncompactness to give necessary and sufficient conditions for a linear operator between these spaces to be compact.
Malkowsky, E. +2 more
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Some Topological and Geometrical Properties of a New Difference Sequence Space
Abstract and Applied Analysis, 2011 We introduce the new difference sequence space 𝑎𝑟𝑝(Δ) . Further, it is proved that the space 𝑎𝑟𝑝(Δ) is the BK-space including the space 𝑏𝑣𝑝, which is the space of sequences of pbounded variation.
Serkan Demiriz, Celal Çakan
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CYCLICITY OF WEIGHTED COMPOSITION OPERATORS ON SOME BK SPACE [PDF]
International Journal of Pure and Apllied Mathematics, 2015 We will investigate the cyclicity for the adjoint of a weighted composition operator acting on ( ˆ lp(α)) .
B. Yousefi, S.M.A. Musavi
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Axioms, 2021 Given any sequence a=(an)n≥1 of positive real numbers and any set E of complex sequences, we can use Ea to represent the set of all sequences y=(yn)n≥1 such that y/a=(yn/an)n≥1∈E.
Bruno de Malafosse
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Non-unitarity of the BKS transformation for symmetric spaces
Journal of Geometry and Physics, 2020 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Some New Generalized Difference Spaces of Nonabsolute Type Derived from the Spaces ℓp and ℓ∞
The Scientific World Journal, 2013 We introduce the sequence space ℓpλ(B) of none absolute type which is a p-normed space and BK space in the cases ...
Feyzi Başar, Ali Karaisa
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