Results 21 to 30 of about 196,053,663 (109)

On behaviour of Darbo fixed point theorem under function sequences [PDF]

open access: yes, 2019
A lot of work has been done on fixed point studies using function classes. In this work, the existence of fixed point is investigated by taking function sequences instead of function classes.
Sekman, Derya   +2 more
core   +2 more sources

UNIQUE FIXED POINT THEOREMS FOR CONTRACTIVE MAPS TYPE IN T 0 -QUASI-METRIC SPACES [PDF]

open access: yes, 2014
In [2], Agyingi proved that every generalized contractive mapping defined in a q-spherically complete T 0 -ultra-quasi-metric space has a unique fixed point.
Yae ́ Ulrich Gaba
core   +1 more source

Global Asymptotic Stability for Nonlinear Functional Integral Equation of Mixed Type

open access: yesJournal of Applied Mathematics, 2013
The existence results of global asymptotic stability of the solution are proved for functional integral equation of mixed type. The measure of noncompactness and the fixed-point theorem of Darbo are the main tools in carrying out our proof.
Zhinan Xia
doaj   +1 more source

Existence of bounded solutions for second order neutral difference equations via measure of noncompactness

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
In this paper we analyze the existence of bounded solutions for a nonlinear second-order neutral difference equation, which is more general than other equations of this type studied recently.
Gonzalo García
doaj   +1 more source

The Existence and Attractivity of Solutions of an Urysohn Integral Equation on an Unbounded Interval

open access: yesAbstract and Applied Analysis, 2013
We prove a result on the existence and uniform attractivity of solutions of an Urysohn integral equation. Our considerations are conducted in the Banach space consisting of real functions which are bounded and continuous on the nonnegative real half axis.
Mohamed Abdalla Darwish   +2 more
doaj   +1 more source

Solvability of Nonlinear Integral Equations of Volterra Type

open access: yesAbstract and Applied Analysis, 2012
This paper deals with the existence of continuous bounded solutions for a rather general nonlinear integral equation of Volterra type and discusses also the existence and asymptotic stability of continuous bounded solutions for another nonlinear integral
Zeqing Liu, Sunhong Lee, Shin Min Kang
doaj   +1 more source

Solvability of an infinite system of nonlinear integral equations of Volterra-Hammerstein type

open access: yesAdvances in Nonlinear Analysis, 2019
The purpose of the paper is to study the solvability of an infinite system of integral equations of Volterra-Hammerstein type on an unbounded interval. We show that such a system of integral equations has at least one solution in the space of functions ...
Chlebowicz Agnieszka
doaj   +1 more source

Solutions of a quadratic Volterra–Stieltjes integral equation in the class of functions converging at infinity

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
The paper deals with the study of the existence of solutions of a quadratic integral equation of Volterra–Stieltjes type. We are looking for solutions in the class of real functions continuous and bounded on the real half-axis $\mathbb{R}_+$ and ...
Jozef Banas, Agnieszka Dubiel
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

A New Type of Darbo's Fixed Point Theorem Defined by The Sequences of Functions

open access: yes, 2018
In this paper, we introduce a new type of Darbo's fixed point theorem by using concept of function sequences with shifting distance property. Afterward, we investigate existence of fixed point under this the theorem.
Karakaya, Vatan   +2 more
openaire   +2 more sources

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