Results 11 to 20 of about 488 (166)

On the De Blasi Measure of Noncompactness and Solvability of a Delay Quadratic Functional Integro-Differential Equation

open access: yesMathematics, 2022
Quadratic integro-differential equations have been discussed in many works, for instance. Some analytic results on the existence and the uniqueness of problem solutions to quadratic integro-differential equations have been investigated in different ...
Ahmed M. A. El-Sayed   +2 more
doaj   +1 more source

Carathéodory solutions of Sturm-Liouville dynamic equation with a measure of noncompactness in Banach spaces

open access: yesOpen Mathematics, 2015
In this paper, we present the existence result for Carathéodory type solutions for the nonlinear Sturm- Liouville boundary value problem (SLBVP) in Banach spaces on an arbitrary time scale.
Yantir Ahmet   +2 more
doaj   +1 more source

Solvability of an infinite system of integral equations on the real half-axis

open access: yesAdvances in Nonlinear Analysis, 2020
The aim of the paper is to investigate the solvability of an infinite system of nonlinear integral equations on the real half-axis. The considerations will be located in the space of function sequences which are bounded at every point of the half-axis ...
Banaś Józef, Woś Weronika
doaj   +1 more source

Infinite System of Differential Equations in Some Spaces

open access: yesAbstract and Applied Analysis, 2012
The first measure of noncompactness was defined by Kuratowski in 1930 and later the Hausdorff measure of noncompactness was introduced in 1957 by Goldenštein et al.
M. Mursaleen, Abdullah Alotaibi
doaj   +1 more source

Solvability of fractional dynamic systems utilizing measure of noncompactness

open access: yesNonlinear Analysis, 2020
Fractional dynamics is a scope of study in science considering the action of systems. These systems are designated by utilizing derivatives of arbitrary orders.
Hemant Kumar Nashine   +3 more
doaj   +1 more source

Solvability of a system of integral equations in two variables in the weighted Sobolev space $W^{1,1}_\omega(a,b)$ using a generalized measure of noncompactness

open access: yesNonlinear Analysis, 2022
In this paper, we deal with the existence of solutions for a coupled system of integral equations in the Cartesian product of weighted Sobolev spaces E = Wω1,1 (a,b) x Wω1,1 (a,b).
Taqi A.M. Shatnawi   +3 more
doaj   +1 more source

Local attractivity for integro-differential equations with noncompact semigroups

open access: yesNonautonomous Dynamical Systems, 2020
In this paper, we are devoted to study the existence and local attractivity of solutions for a class of integro-differential equations.Under the situation that the nonlinear term satisfy Carathéodory conditions and a noncompactness measure condition, we ...
Diop Amadou   +3 more
doaj   +1 more source

Measure of Noncompactness for Hybrid Langevin Fractional Differential Equations

open access: yesAxioms, 2020
In this research article, we introduce a new class of hybrid Langevin equation involving two distinct fractional order derivatives in the Caputo sense and Riemann–Liouville fractional integral. Supported by three-point boundary conditions, we discuss the
Ahmed Salem, Mohammad Alnegga
doaj   +1 more source

A New Variant of Symmetric Distance Spaces and an Extension of the Banach Fixed-Point Theorem

open access: yesJournal of Mathematics, 2022
The notion of Δ-metric spaces has been proposed in this study as a generalization of b-metric spaces, extended b-metric spaces, and p-metric spaces. A number of topological characteristics of such spaces have been investigated in this paper.
Kushal Roy   +3 more
doaj   +1 more source

On the measure of non-compactness of maximal operators

open access: yesJournal of Function Spaces and Applications, 2004
In one of the previous articles of the author it was proved that if B is a convex quasi-density measurable basis and E is a symmetric space on Rn with respect to the Lebesgue measure, then there do not exist non-orthogonal weights w and v for which the ...
Georgi G. Oniani
doaj   +1 more source

Home - About - Disclaimer - Privacy