Results 31 to 40 of about 2,646,098 (197)

Existence of solutions for an infinite system of Hilfer fractional boundary value problems in tempered sequence spaces

open access: yesAlexandria Engineering Journal, 2023
This article aims to study the existence of the solutions to the infinite system of Hilfer fractional differential equations in tempered sequence spaces.
Inzamamul Haque   +2 more
doaj   +1 more source

On Approximate Operator Representations of Sequences in Banach Spaces [PDF]

open access: yesComplex Analysis and Operator Theory, 2021
Generalizing results by Halperin et al., Grivaux recently showed that any linearly independent sequence $\{f_k\}_{k=1}^\infty$ in a separable Banach space $X$ can be represented as a suborbit $\{T^{α(k)}φ\}_{k=1}^\infty$ of some bounded operator $T: X\to X.$ In general, the operator $T$ and the powers $α(k)$ are not known explicitly.
Ole Christensen   +2 more
openaire   +3 more sources

V-Proximal Trustworthy Banach Spaces

open access: yesJournal of Function Spaces, 2020
In a recent work (2016), the first author proved the fuzzy sum rule for the V-proximal subdifferential under some natural assumptions on an equivalent norm of the Banach spaces.
Messaoud Bounkhel, Mostafa Bachar
doaj   +1 more source

Existence and Uniqueness of Fixed Point for Cyclic Mappings in Quasi-αb-Metric Spaces

open access: yesInPrime, 2022
The fixed point theory remains the most important and preferred topic studied in mathematical analysis. This study discusses sufficient conditions to prove a unique fixed point in quasi-αb-metric spaces with cyclic mapping.
Ainun Sukmawati Al Idrus   +4 more
doaj   +1 more source

A MEASURE OF NONCOMPACTNESS IN SEQUENCE BANACH SPACES

open access: yesDemonstratio Mathematica, 1995
A measure of noncompactness is introduced and shown to be equivalent to the Hausdorff measure of noncompactness.
Martinón, Antonio, Sadarangani, Kishin
openaire   +2 more sources

Some remarks on James-Schreier spaces. [PDF]

open access: yes, 2010
The James-Schreier spaces V_p, where p is a real number greater than or equal to 1, were recently introduced by Bird and Laustsen as an amalgamation of James' quasi-reflexive Banach space on the one hand and Schreier's Banach space giving a ...
Laustsen, Niels Jakob   +2 more
core   +5 more sources

Ornstein-Uhlenbeck processes in Banach spaces and their spectral representations. [PDF]

open access: yes, 2002
For Q the variance of some centred Gaussian random vector in a separable Banach space it is shown that, necessarily, Q factors through $\ell^2$ as a product of 2-summing operators.
Groves, James S.
core   +5 more sources

2-convexity and 2-concavity in Schatten ideals. [PDF]

open access: yes, 1996
The properties p-convexity and q-concavity are fundamental in the study of Banach sequence spaces (see [L-TzII]), and in recent years have been shown to be of great significance in the theory of the corresponding Schatten ideals ([G-TJ], [LP-P] and many ...
Jameson, Graham J. O.
core   +4 more sources

Statistical approximation with a sequence of 2-Banach spaces

open access: yesMathematical and Computer Modelling, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mehmet Gürdal, Ahmet Sahiner
openaire   +6 more sources

Banach-Saks property in some Banach sequence spaces [PDF]

open access: yesAnnales Polonici Mathematici, 1997
Summary: It is proved that for any Banach space \(X\) property \((\beta)\) defined by \textit{S. Rolewicz} [in Stud. Math. 87, 181-191 (1987; Zbl 0652.46010)] implies that both \(X\) and \(X^*\) have the Banach-Saks property. Moreover, in Musielak-Orlicz sequence spaces, criteria for the Banach-Saks property, the near uniform convexity, the uniform ...
Cui, Yunan   +2 more
openaire   +1 more source

Home - About - Disclaimer - Privacy