Results 91 to 100 of about 603 (180)

Existence of weak solutions for a boundary value problem of a second order ordinary differential equation

open access: yesBoundary Value Problems, 2018
The aim of this paper is to investigate the existence of weak solutions for a boundary value problem of a second order differential equation. As the main tool, we apply a Krasnosel’skii type fixed point theorem in conjunction with the technique of ...
Shiyou Weng, Fuli Wang
doaj   +1 more source

Existence and Asymptotic Stability of Solutions of a Functional Integral Equation via a Consequence of Sadovskii’s Theorem

open access: yesJournal of Function Spaces, 2014
Using the technique of measures of noncompactness and, in particular, a consequence of Sadovskii’s fixed point theorem, we prove a theorem about the existence and asymptotic stability of solutions of a functional integral equation.
Agnieszka Chlebowicz   +2 more
doaj   +1 more source

Radon–Nikodým indexes and measures of weak noncompactness

open access: yesJournal of Functional Analysis, 2014
The authors introduce and study certain indices related to the Radon-Nikodým property in Banach spaces. Interesting quantitative versions of classic results in RNP are proved. Let \(E\) be a Banach space and \((\Omega,\Sigma,\mu)\) a complete probability space.
Cascales, B., Pérez, A., Raja, M.
openaire   +3 more sources

Advances in nonlinear analysis via the concept of measure of noncompactness

open access: yes, 2017
This book offers a comprehensive treatment of the theory of measures of noncompactness. It discusses various applications of the theory of measures of noncompactness, in particular, by addressing the results and methods of fixed-point theory. The concept
Jleli, Mohamed   +5 more
core   +1 more source

Nonemptyness and compactness of the solution set for fractional evolution inclusions with non-instantaneous impulses

open access: yesElectronic Journal of Differential Equations, 2019
In this article, we consider the nonemptyness and compactness of the solution set for a class of fractional semilinear evolution inclusions with non-instantaneous impulses in Banach spaces. To achieve this we use fixed point theorems with semigroup
Jinrong Wang   +2 more
doaj  

Existence theory for nonlinear volterra integral and differential equations

open access: yesJournal of Inequalities and Applications, 2001
In this paper we prove the existence theorems for the integrodifferential equation where in first part are functions with values in a Banach space and the integral is taken in the sense of Bochner. In second part are weakly–weakly sequentially
Sikorska Aneta
doaj  

An application of a measure of noncompactness in the study of asymptotic stability

open access: yes, 2003
Using the technique of fixed-point theorem of Darbo type associated with measures of noncompactness, we obtain an existence result for some functional-integral equation. Moreover, the choice of suitable measure of noncompactness allows us to characterize
Banaś, J., Rzepka, B.
core   +1 more source

Analysis of the role of social support - cognitive psychology and emotional process approach. [PDF]

open access: yesEur J Transl Myol, 2020
Heydari M   +5 more
europepmc   +1 more source

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