Results 41 to 50 of about 778 (152)

Fourier Spectral Methods for Some Linear Stochastic Space-Fractional Partial Differential Equations

open access: yesMathematics, 2016
Fourier spectral methods for solving some linear stochastic space-fractional partial differential equations perturbed by space-time white noises in the one-dimensional case are introduced and analysed.
Yanmei Liu, Monzorul Khan, Yubin Yan
doaj   +1 more source

Collocation based approximations for a class of fractional boundary value problems

open access: yesMathematical Modelling and Analysis, 2023
A boundary value problem for fractional integro-differential equations with weakly singular kernels is considered. The problem is reformulated as an integral equation of the second kind with respect to, the Caputo fractional derivative of y of order α ...
Hanna Britt Soots   +2 more
doaj   +1 more source

Asymptotically periodic behavior of solutions to fractional non-instantaneous impulsive semilinear differential inclusions with sectorial operators

open access: yesAdvances in Difference Equations, 2021
In this paper, we prove two results concerning the existence of S-asymptotically ω-periodic solutions for non-instantaneous impulsive semilinear differential inclusions of order 1 < α < 2 ...
Zainab Alsheekhhussain   +2 more
doaj   +1 more source

Almost Periodic Solutions for Impulsive Fractional Stochastic Evolution Equations

open access: yesInternational Journal of Analysis and Applications, 2014
In this paper, we consider the existence of square-mean piecewise almost periodic solutions for impulsive fractional stochastic evolution equations involving Caputo fractional derivative.
Toufik Guendouzi, Lamia Bousmaha
doaj   +2 more sources

A hybrid method based on the classical/piecewise Chebyshev cardinal functions for multi-dimensional fractional Rayleigh–Stokes equations

open access: yesResults in Applied Mathematics
This study presents a numerical hybrid strategy for deriving approximate solutions to the one- and two-dimensional fractional Rayleigh–Stokes equations involving the Caputo derivative.
M. Hosseininia   +3 more
doaj   +1 more source

A New Variant of B-Spline for the Solution of Modified Fractional Anomalous Subdiffusion Equation

open access: yesJournal of Function Spaces, 2021
The objective of this paper is to present an efficient numerical technique for solving time fractional modified anomalous subdiffusion equation. Anomalous diffusion equation has its role in various branches of biological sciences. B-spline is a piecewise
M. S. Hashmi   +7 more
doaj   +1 more source

On piecewise-polynomial approximation of functions with a bounded fractional derivative in an L-norm

open access: yesJournal of Approximation Theory, 1990
The author studies the error in approximating functions with a bounded \((r+\alpha)th\) derivative in an L-norm. Here r is a nonnegative integer, \(\alpha\in [0,1)\), and \(f^{(r+\alpha)}\) is the classical fractional derivative. The author proves that, for any such function f, there exists a piecewise-polynomial of degree s that interpolates f at n ...
openaire   +2 more sources

Piecewise second kind Chebyshev functions for a class of piecewise fractional nonlinear reaction–diffusion equations with variable coefficients

open access: yesAlexandria Engineering Journal
In this paper, a new type of piecewise fractional derivative (PFD) is introduced. The ordinary and distributed-order fractional derivatives in the Caputo sense are used to define this type of PFD.
M.H. Heydari, D. Baleanu, M. Bayramu
doaj   +1 more source

A Mathematical Model of COVID-19 Using Piecewise Derivative of Fractional Order

open access: yesEuropean Journal of Pure and Applied Mathematics
Currently the dynamical systems of infectious disease were studied by using various definitions of fractional calculus. Because the mentioned area has the ability to demonstrate the short and long memory terms involve in the physical dynamics of numerous real world problems.
Shabana Naz   +4 more
openaire   +1 more source

Stability of solutions to impulsive Caputo fractional differential equations

open access: yesElectronic Journal of Differential Equations, 2016
Stability of the solutions to a nonlinear impulsive Caputo fractional differential equation is studied using Lyapunov like functions. The derivative of piecewise continuous Lyapunov functions among the nonlinear impulsive Caputo differential equation ...
Ravi Agarwal   +2 more
doaj  

Home - About - Disclaimer - Privacy