scholarly journals Monotone iterations for differential equations with a parameter

1997 ◽  
Vol 10 (3) ◽  
pp. 273-278 ◽  
Author(s):  
Tadeusz Jankowski ◽  
V. Lakshmikantham
Keyword(s):  
Differential Equations ◽  
Upper And Lower Solutions ◽  
Monotone Iterative Technique ◽  
Extremal Solutions ◽  
Iterative Technique ◽  
Monotone Iterative ◽  
Monotone Iterations

Consider the problem {y′(t)=f(t,y(t),λ),t∈J=[0,b],y(0)=k0,G(y,λ)=0.. Employing the method of upper and lower solutions and the monotone iterative technique, existence of extremal solutions for the above equation are proved.

scholarly journals Monotone iterative technique via initial time different coupled lower and upper solutions for fractional differential equations

Filomat ◽  
2017 ◽  
Vol 31 (4) ◽  
pp. 1031-1039 ◽  
Author(s):  
Ali Yakar ◽  
Hadi Kutlay
Keyword(s):  
Differential Equations ◽  
Fractional Differential Equations ◽  
Upper And Lower Solutions ◽  
Monotone Iterative Technique ◽  
Extremal Solutions ◽  
Lower And Upper Solutions ◽  
Initial Time ◽  
Iterative Technique ◽  
Monotone Iterative ◽  
Fractional Differential

In this paper, we investigate the extremal solutions for a class of nonlinear fractional differential equations with order q 2 (0; 1) by means of monotone iterative technique via initial time different coupled upper and lower solutions.

scholarly journals Monotone Iterative Technique for Conformable Fractional Differential Equations with Deviating Arguments

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Huiling Chen ◽  
Shuman Meng ◽  
Yujun Cui
Keyword(s):  
Differential Equations ◽  
Fractional Differential Equations ◽  
Sufficient Conditions ◽  
Monotone Iterative Technique ◽  
Extremal Solutions ◽  
Iterative Technique ◽  
Deviating Arguments ◽  
Comparison Principles ◽  
Monotone Iterative ◽  
Fractional Differential

This paper is concerned with the existence of extremal solutions for periodic boundary value problems for conformable fractional differential equations with deviating arguments. We first build two comparison principles for the corresponding linear equation with deviating arguments. With the help of new comparison principles, some sufficient conditions for the existence of extremal solutions are established by combining the method of lower and upper solutions and the monotone iterative technique. As an application, an example is presented to enrich the main results of this article.

A class of fractional impulsive functional differential equations with nonlocal conditions

2016 ◽  
Vol 66 (4) ◽  
Author(s):  
Yiliang Liu ◽  
Jiangfeng Han
Keyword(s):  
Differential Equations ◽  
Comparison Theorem ◽  
Existence Of Solutions ◽  
Functional Differential Equations ◽  
Nonlocal Conditions ◽  
Monotone Iterative Technique ◽  
Extremal Solutions ◽  
Iterative Technique ◽  
Monotone Iterative ◽  
Functional Differential

AbstractIn this paper, we deal with the existence of solutions for the fractional impulsive functional differential equations with nonlocal conditions. Then we build a new comparison theorem and obtain the existence of extremal solutions and quasi-solutions by use of the monotone iterative technique and the method of lower and upper solutions.

scholarly journals Initial Value Problem For Nonlinear Fractional Differential Equations With ψ-Caputo Derivative Via Monotone Iterative Technique

Axioms ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 57 ◽  
Author(s):  
Choukri Derbazi ◽  
Zidane Baitiche ◽  
Mouffak Benchohra ◽  
Alberto Cabada
Keyword(s):  
Differential Equations ◽  
Fractional Differential Equations ◽  
Initial Value Problem ◽  
Caputo Derivative ◽  
Monotone Iterative Technique ◽  
Extremal Solutions ◽  
Iterative Technique ◽  
Initial Value ◽  
Monotone Iterative ◽  
Fractional Differential

In this article, we discuss the existence and uniqueness of extremal solutions for nonlinear initial value problems of fractional differential equations involving the ψ -Caputo derivative. Moreover, some uniqueness results are obtained. Our results rely on the standard tools of functional analysis. More precisely we apply the monotone iterative technique combined with the method of upper and lower solutions to establish sufficient conditions for existence as well as the uniqueness of extremal solutions to the initial value problem. An illustrative example is presented to point out the applicability of our main results.

scholarly journals A generalized upper and lower solutions method for nonlinear second order ordinary differential equations

1992 ◽  
Vol 5 (2) ◽  
pp. 157-165 ◽  
Author(s):  
Juan J. Nieto ◽  
Alberto Cabada
Keyword(s):  
Differential Equations ◽  
Boundary Value Problem ◽  
Nonlinear Boundary ◽  
Upper And Lower Solutions ◽  
Monotone Iterative Technique ◽  
Second Order ◽  
Iterative Technique ◽  
Monotone Iterative ◽  
Carathéodory Function ◽  
Minimal And Maximal Solutions

The purpose of this paper is to study a nonlinear boundary value problem of second order when the nonlinearity is a Carathéodory function. It is shown that a generalized upper and lower solutions method is valid, and the monotone iterative technique for finding the minimal and maximal solutions is developed.

scholarly journals Existence for Certain Systems of Nonlinear Fractional Differential Equations

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Zhaowen Zheng ◽  
Xiujuan Zhang ◽  
Jing Shao
Keyword(s):  
Differential Equations ◽  
Fractional Differential Equations ◽  
Existence Of Solutions ◽  
Upper And Lower Solutions ◽  
Monotone Iterative Technique ◽  
Iterative Technique ◽  
Comparison Result ◽  
Nonlinear Fractional Differential Equations ◽  
Monotone Iterative ◽  
Fractional Differential

By establishing a comparison result and using the monotone iterative technique, combining with the method of upper and lower solutions, the existence of solutions for systems of nonlinear fractional differential equations is considered. An example is given to demonstrate the applicability of our results.

scholarly journals Minimal and maximal solutions to systems of differential equations with a singular matrix

2003 ◽  
Vol 45 (2) ◽  
pp. 223-231
Author(s):  
Tadeusz Jankowski
Keyword(s):  
Differential Equations ◽  
Ordinary Differential Equations ◽  
Monotone Iterative Technique ◽  
Extremal Solutions ◽  
Iterative Technique ◽  
Singular Matrix ◽  
Monotone Iterative ◽  
Maximal Solutions ◽  
Systems Of Differential Equations ◽  
Minimal And Maximal Solutions

AbstractThe monotone iterative technique is applied to a system of ordinary differential equations with a singular matrix. The existence of extremal solutions is proved.

scholarly journals On Maximal and Minimal Solutions for Set-Valued Differential Equations with Feedback Control

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Ngo Van Hoa ◽  
Nguyen Dinh Phu
Keyword(s):  
Feedback Control ◽  
Differential Equations ◽  
Hausdorff Space ◽  
Optimization Problems ◽  
Approximate Solutions ◽  
Monotone Iterative Technique ◽  
Extremal Solutions ◽  
Monotone Sequence ◽  
Iterative Technique ◽  
Monotone Iterative

In this paper, we present the existence of extremal solutions of set-valued differential equations with feedback control on semilinear Hausdorff space under Hukuhara derivative which is developed under the formDHX(t)=F(t,X(t),H(t,X(t))),X(0)=X0,  for all t∈[0,T]with the monotone iterative technique and we will verify that monotone sequence of approximate solutions converging uniformly to the solution of the problem, that is useful for optimization problems.

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