Results 21 to 30 of about 9,778 (190)

Generalised cosine functions, basis and regularity properties [PDF]

open access: yes, 2015
We examine regularity and basis properties of the family of rescaled $p$-cosine functions. We find sharp estimates for their Fourier coefficients. We then determine two thresholds, $p_02$, such that this family is a Schauder basis of $L_s(0,1)$ for all ...
Boulton, Lyonell, Melkonian, Houry
core   +2 more sources

The Application Domain of Infinite Matrices with Algorithms

open access: yesUniversal Journal of Mathematics and Applications, 2018
The purpose of this paper is twofold. First, we define the new spaces and investigate some topological and structural properties. Also, we compute dual spaces of new spaces which are help us in the characterization of matrix mappings.
Murat Kirişçi
doaj   +1 more source

Orthogonal bases in a topological algebra are Schauder bases

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
In a topological algebra with separately continuous multiplication, the result quoted in the title is proved.
Subbash J. Bhatt, G. M. Deheri
doaj   +1 more source

A New Paranormed Sequence Space Defined by Regular Bell Matrix

open access: yesDera Natung Government College Research Journal, 2023
This paper aims to construct a new paranormed sequence space by the aid of a regular matrix of Bell numbers. As well, its special duals such as α−,β−,γ−  duals are presented and Schauder basis is determined.
Murat Karakaş, Muhammet Cihat Dağlı
doaj   +1 more source

Some Generalized Versions of Chevet–Saphar Tensor Norms

open access: yesMathematics, 2022
The paper is concerned with some generalized versions gE and wE of classical tensor norms. We find a Banach space E for which gE and wE are finitely generated tensor norms, and show that gE and wE are associated with the ideals of some E-nuclear ...
Ju Myung Kim
doaj   +1 more source

Isomorphic Schauder decompositions in certain Banach spaces [PDF]

open access: yes, 2013
We extend a theorem of Kato on similarity for sequences of projections in Hilbert spaces to the case of isomorphic Schauder decompositions in certain Banach spaces.
Marchenko, Vitalii
core   +2 more sources

Continuous lattice ordering by Schauder basis cones [PDF]

open access: yesProceedings of the American Mathematical Society, 1971
Let (E, τ \tau ) be a barrelled Hausdorff space lattice ordered by the cone of an unconditional Schauder basis ( x n , f n ) ({x_n},{f_n}) . It is shown that under such an ordering (E, T) is a
openaire   +2 more sources

Some New Characterizations and g-Minimality and Stability of g-Bases in the Hilbert Spaces

open access: yesJournal of Function Spaces and Applications, 2013
The concept of g-basis in the Hilbert spaces is introduced by Guo (2012) who generalizes the Schauder basis in the Hilbert spaces. g-basis plays the similar role in g-frame theory to that the Schauder basis plays in frame theory.
Xunxiang Guo
doaj   +1 more source

Embedding subspaces of 𝑙ⁿ_{∞} into spaces with Schauder basis [PDF]

open access: yesProceedings of the American Mathematical Society, 1993
It is proved that for sufficiently small ε > 0 \varepsilon > 0 and any 0 > δ > 1 / 2 0 > \delta > 1/2 , a random n n -dimensional subspace E E of l ...
Piotr Mankiewicz   +1 more
openaire   +1 more source

On classes of Banach spaces admitting "small" universal spaces [PDF]

open access: yes, 2008
We characterize those classes $\ccc$ of separable Banach spaces admitting a separable universal space $Y$ (that is, a space $Y$ containing, up to isomorphism, all members of $\ccc$) which is not universal for all separable Banach spaces.
Dodos, Pandelis
core   +3 more sources

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