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ON MEASURES OF NONCOMPACTNESS IN INEQUALITIES

open access: greenНаучный вестник МГТУ ГА, 2017
Measures of noncompactness are numerical characteristics of bounded subsets of metric space, equal to zero on relatively compact subsets. The quantitative characteristic of measure of noncompactness of metric space subset was introduced by K. Kuratovskiy
N. A. Erzakova
doaj   +2 more sources

Coupled measure of noncompactness and functional integral equations [PDF]

open access: goldOpen Mathematics, 2022
The aim of this article is to study the results of the fixed-point in coupled and tripled measure of noncompactness (MNC). We will use the technique of MNC for coupled and tripled MNC.
Hosseinzadeh Hasan   +3 more
doaj   +2 more sources

Measures of noncompactness on w-distance spaces [PDF]

open access: yesMathematica Moravica, 2021
The aim of this paper is to provide a new framework for the study of measures of noncompactness in generalized metric spaces. Firstly, we introduce the notion of w-measure of noncompactness on metric spaces with a w-distance and extend the diameter and ...
Kostić Aleksandar
doaj   +3 more sources

A New Survey of Measures of Noncompactness and Their Applications [PDF]

open access: goldAxioms, 2022
We present a survey of the theory of measures of noncompactness and discuss some fixed point theorems of Darbo’s type. We apply the technique of measures of noncompactness to the characterization of classes of compact operators between certain sequence ...
Moosa Gabeleh   +3 more
doaj   +2 more sources

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

open access: hybridOpen 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   +2 more sources

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: diamondNonlinear 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   +3 more sources

Measure of Noncompactness for Compact Matrix Operators on Some BK Spaces [PDF]

open access: goldJournal of Function Spaces, 2014
We study the spaces w0p, wp, and w∞p of sequences that are strongly summable to 0, summable, and bounded with index p≥1 by the Cesàro method of order 1 and establish the representations of the general bounded linear operators from the spaces wp into the ...
E. Malkowsky, A. Alotaibi
doaj   +2 more sources

On solutions of a hybrid generalized Caputo-type problem via the noncompactness measure in the generalized version of Darbo’s criterion

open access: yesJournal of Inequalities and Applications, 2023
In this manuscript, we study the existence and uniqueness of solutions for a new neutral hybrid nonlinear differential equation in the context of a fractional generalized operator in the sense of ψ-Caputo.
Naas Adjimi   +5 more
doaj   +1 more source

Existence and Uniqueness for a Class of SPDEs Driven by L\'{e}vy Noise in Hilbert Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2021
The present paper seeks to prove the existence and uniqueness of solutions to stochastic evolution equations in Hilbert spaces driven by both Poisson random measure and Wiener process with non-Lipschitz drift term.
Majid Zamani   +2 more
doaj   +1 more source

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