Results 1 to 10 of about 941 (164)

Surjective isometries on Banach sequence spaces: A survey

open access: yesConcrete Operators, 2022
In this survey, we present several results related to characterizing the surjective isometries on Banach sequence spaces. Our survey includes full proofs of these characterizations for the classical spaces as well as more recent results for combinatorial
Antunes Leandro, Beanland Kevin
doaj   +4 more sources

Banach-Saks Type and Gurariǐ Modulus of Convexity of Some Banach Sequence Spaces [PDF]

open access: yesAbstract and Applied Analysis, 2014
Banach-Saks type is calculated for two types of Banach sequence spaces and Gurariǐ modulus of convexity is estimated from above for the spaces of one type among them.
Henryk Hudzik   +3 more
doaj   +4 more sources

On the β-Dual of Banach-Space-Valued Difference Sequence Spaces [PDF]

open access: yesUkrainian Mathematical Journal, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bhardwaj, V.K., Gupta, S.
exaly   +3 more sources

Extendibility of bilinear forms on banach sequence spaces [PDF]

open access: yesIsrael Journal of Mathematics, 2014
We study Hahn-Banach extensions of multilinear forms defined on Banach sequence spaces. We characterize $c_0$ in terms of extension of bilinear forms, and describe the Banach sequence spaces in which every bilinear form admits extensions to any superspace.
Pablo Sevilla-Peris   +2 more
exaly   +5 more sources

Banach spaces of GLT sequences and function spaces

open access: yesThe Electronic Journal of Linear Algebra, 2022
Generalized locally Toeplitz (GLT) sequences of matrices originated from the spectral study of certain partial differential equations. To be more precise, such matrix sequences arise when we numerically approximate either partial differential equations or fractional differential equations using any discretization by local methods (finite differences ...
Kumar, V. B. Kiran   +2 more
openaire   +3 more sources

A Class of Hereditarily $ell_p(c_0)$ Banach spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2019
We extend the class of Banach sequence spaces constructed by Ledari, as presented in ''A class of hereditarily $ell_1$ Banach spaces without Schur property'' and obtain a new class of hereditarily $ell_p(c_0)$ Banach spaces for $1leq ...
Somayeh Shahraki, Alireza Ahmadi Ledari
doaj   +1 more source

Approximative K-atomic decompositions and frames in Banach spaces [PDF]

open access: yesArab Journal of Mathematical Sciences, 2020
L. Gǎvruţa (2012) introduced a special kind of frames, named K-frames, where K is an operator, in Hilbert spaces, which is significant in frame theory and has many applications.
Shah Jahan
doaj   +1 more source

Separated sequences in nonreflexive Banach spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
We prove that there is c > 1 c>1
Andrzej Krzysztof Kryczka   +1 more
openaire   +3 more sources

On linear independence of sequences in a Banach space [PDF]

open access: yesPacific Journal of Mathematics, 1953
This paper gives an answer to a problem raised by \textit{A. Dvoretzky}: given a sequence of (algebraically) linearly independent unit vectors of a Banach space, does there exists a subsequence linearly independent in some stronger sense? The authors prove that, given any positively valued function \(\varphi(n)\), every sequence of linearly independent
Erdös, P., Straus, E. G.
openaire   +3 more sources

AN OPERATOR SUMMABILITY OF SEQUENCES IN BANACH SPACES [PDF]

open access: yesGlasgow Mathematical Journal, 2013
AbstractLet 1 ≤ p < ∞. A sequence 〈 xn 〉 in a Banach space X is defined to be p-operator summable if for each 〈 fn 〉 ∈ lw*p(X*) we have 〈〈 fn(xk)〉k〉n ∈ lsp(lp). Every norm p-summable sequence in a Banach space is operator p-summable whereas in its turn every operator p-summable sequence is weakly p-summable.
Karn, Anil Kumar, Sinha, Deba Prasad
openaire   +2 more sources

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