Results 11 to 20 of about 175 (113)

Measure of Weak Noncompactness and Fixed Point Theorems in Banach Algebras with Applications [PDF]

open access: yesAxioms, 2019
In this paper, we prove some fixed point theorems for the nonlinear operator A · B + C in Banach algebra. Our fixed point results are obtained under a weak topology and measure of weak noncompactness; and we give an example of the application of our results to a nonlinear integral equation in Banach algebra.
Mohamed Amine Farid   +2 more
exaly   +3 more sources

Real Interpolation and Measure of Weak Noncompactness

open access: yesMathematische Nachrichten, 1995
AbstractBehavior of weak measures of noncompactness under real interpolation is investigated. It is shown that “convexity type” theorems hold true for weak measures of noncompactness.
Aksoy, A. G., Maligranda, Lech
exaly   +5 more sources

Multivalued fixed point theorems in terms of weak topology and measure of weak noncompactness

open access: yesJournal of Mathematical Analysis and Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tiziana Cardinali, Paola Rubbioni
exaly   +5 more sources

Measures of weak noncompactness in Banach spaces

open access: yesTopology and Its Applications, 2009
For a bounded subset \(H\) of a Banach space \(E\), the following quantities are considered: \[ \omega(H) = \inf\{\varepsilon > 0: H \subset K_\varepsilon + \varepsilon B_E \text{ and } K_\varepsilon \subset E \text{ is } w-\text{compact}\}; \] \[ \gamma(H) = \sup\left\{\left|\lim_n \lim_m f_m(x_n) - \lim_m \lim_n f_m(x_n) \right|: (f_m) \subset B_{E^*}
C Angosto, B Cascales
exaly   +4 more sources

Weak Solution for a Fractional Langevin Inclusion with the Katugampola–Caputo Fractional Derivative

open access: yesFractal and Fractional, 2023
In this work, we examine the existence of weak solution for a class of boundary value problems involving fractional Langevin inclusion with the Katugampola–Caputo fractional derivative under specified conditions contain the Pettis integrability ...
Lamya Almaghamsi
doaj   +2 more sources

Existence of Weak Solutions for Fractional Integrodifferential Equations with Multipoint Boundary Conditions

open access: yesInternational Journal of Differential Equations, 2018
By combining the techniques of fractional calculus with measure of weak noncompactness and fixed point theorem, we establish the existence of weak solutions of multipoint boundary value problem for fractional integrodifferential equations.
Haide Gou, Baolin Li
doaj   +2 more sources

Weak solutions for nonlinear fractional differential equations with integral boundary conditions in Banach spaces [PDF]

open access: yesOpuscula Mathematica, 2012
The aim of this paper is to investigate a class of boundary value problems for fractional differential equations involving nonlinear integral conditions.
Mouffak Benchohra, Fatima-Zohra Mostefai
doaj   +2 more sources

Weak Solutions for Partial Random Hadamard Fractional Integral Equations with Multiple Delays

open access: yesDiscrete Dynamics in Nature and Society, 2017
We present some results concerning the existence of weak solutions for some functional integral equations of Hadamard fractional order with random effects and multiple delays by applying Mönch’s and Engl’s fixed point theorems associated with the ...
Saïd Abbas   +3 more
doaj   +2 more sources

Relative $$\varepsilon$$-pseudo weak demicompactness and measures of weak noncompactness

open access: yesAnnals of Functional Analysis, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bilel Krichen, Krichen Bilel
exaly   +3 more sources

Measure of weak noncompactness under complex interpolation [PDF]

open access: yesStudia Mathematica, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Andrzej Kryczka, Stanisław Prus
exaly   +2 more sources

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