Results 31 to 40 of about 627 (90)

On a fractional hybrid integro-differential equation with mixed hybrid integral boundary value conditions by using three operators

open access: yesAlexandria Engineering Journal, 2020
We investigate the existence of solutions for a fractional hybrid integro-differential equation with mixed hybrid integral boundary value conditions.
D. Baleanu, S. Etemad, Sh. Rezapour
doaj   +1 more source

On the Nagumo uniqueness theorem

open access: yes, 2011
By a convenient reparametrisation of the integral curves of a nonlinear ordinary differential equation (ODE), we are able to improve the conclusions of the recent contribution [A. Constantin, Proc. Japan Acad. {\bf 86(A)} (2010), 41--44]. In this way, we
Mustafa, Octavian G., O'Regan, Donal
core   +1 more source

An Extension of the Well-Posedness Concept for Fractional Differential Equations of Caputo's Type [PDF]

open access: yes, 2013
It is well known that, under standard assumptions, initial value problems for fractional ordinary differential equations involving Caputo-type derivatives are well posed in the sense that a unique solution exists and that this solution continuously ...
Diethelm, Kai
core   +1 more source

Coupled system of a fractional order differential equations with weighted initial conditions

open access: yesOpen Mathematics, 2019
Here, a coupled system of nonlinear weighted Cauchy-type problem of a diffre-integral equations of fractional order will be considered. We study the existence of at least one integrable solution of this system by using Schauder fixed point Theorem.
El-Sayed Ahmed M. A.   +1 more
doaj   +1 more source

Theory and applications of first-order systems of Stieltjes differential equations

open access: yesAdvances in Nonlinear Analysis, 2017
We set up the basic theory of existence and uniqueness of solutions for systems of differential equations with usual derivatives replaced by Stieltjes derivatives.
Frigon Marlène, Pouso Rodrigo López
doaj   +1 more source

The Knaster-Tarski theorem versus monotone nonexpansive mappings

open access: yes, 2018
Let $X$ be a partially ordered set with the property that each family of order intervals of the form $[a,b],[a,\rightarrow )$ with the finite intersection property has a nonempty intersection.
Espínola, Rafael, Wiśnicki, Andrzej
core   +1 more source

A general Lipschitz uniqueness criterion for scalar ordinary differential equations [PDF]

open access: yes, 2014
The classical Lipschitz-type criteria guarantee unique solvability of the scalar initial value problem $\dot x=f(t,x)$, $x(t_0)=x_0,$ by putting restrictions on $|f(t,x)-f(t,y)|$ in dependence of $|x-y|$. Geometrically it means that the field differences
Diblik, Josef   +2 more
core   +2 more sources

An investigation of fractional Bagley-Torvik equation

open access: yesOpen Mathematics, 2019
In this paper the authors prove the existence as well as approximations of the solutions for the Bagley-Torvik equation admitting only the existence of a lower (coupled lower and upper) solution.
Fazli Hossein, Nieto Juan J.
doaj   +1 more source

Solutions to a class of nonlinear differential equations of fractional order [PDF]

open access: yes, 2009
In this paper we investigate the formulation of a class of boundary value problems of fractional order with the Riemann-Liouville fractional derivative and integral-type boundary conditions.
Kosmatov, Nickolai
core   +1 more source

Generalized (ψ,φ)-contraction to investigate Volterra integral inclusions and fractal fractional PDEs in super-metric space with numerical experiments

open access: yesNonlinear Engineering
This article demonstrates the behavior of generalized (ψ,φ\psi ,\varphi )-type contraction mappings involving expressions of rational-type in the context of super-metric spaces.
Shah Syed Khayyam   +4 more
doaj   +1 more source

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