Extending the Liouville-Caputo definition of a fractional derivative to a nonlocal covariant generalization of arbitrary bound operators acting on multidimensional Riemannian spaces an appropriate approach for the 3D shape recovery of aperture afflicted 2D slide sequences is proposed. We demonstrate, that the step from a local to a nonlocal algorithm yields an order of magnitude in accuracy and...

Abstract. We present an efficient algorithm for the evaluation of the Caputo fractional derivative C0D α t f(t) of order α ∈ (0, 1), which can be expressed as a convolution of f (t) with the kernel t. The algorithm is based on an efficient sum-of-exponentials approximation for the kernel t on the interval [∆t, T ] with a uniform absolute error ε, where the number of exponentials Nexp needed is ...

In this paper, we propose an efficient alternating direction implicit (ADI) Galerkin method for solving the time-fractional partial differential equation with damping, where the fractional derivative is in the sense of Caputo with order in (1, 2). The presented numerical scheme is based on the L2-1σ method in time and the Galerkin finite element method in space. The unconditional stability and ...

In the present paper we give a fractional generalization of the Lauwerier formulation of the boundary value problem of the temperature field in oil strata. The Caputo fractional derivative operator and the Laplace transform are the important tools for solving the proposed problem. By using Efros’ theorem which is a modified form of convolution theorem for Laplace transform, the solution is obta...

In this paper, a new numerical method for solving fractional optimal control problems (FOCPs) is presented. The fractional derivative in the dynamic system is described in the Caputo sense. The method is based upon biorthogonal cubic Hermite spline multiwavelets approximations. The properties of biorthogonal multiwavelets are first given. The operational matrix of fractional Riemann-Lioville in...

Abdon Atangana 1,*,† and Rubayyi T. Alqahtani 2,† 1 Institute for Groundwater Studies, University of the Free State, Bloemfontein 9301, South Africa 2 Department of Mathematics and Statistics, College of Science, Al-Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11566, Saudi Arabia; [email protected] * Correspondence: [email protected]; Tel.: +27-78-294-8604; Fax: +27-51-...

In this paper, we give some properties of the left and right finite Caputo derivatives. Such derivatives lead to finite Riesz type fractional derivative, which could be considered as the fractional power of the Laplacian operator modelling the dynamics of many anomalous phenomena in super-diffusive processes. Finally, the exact solutions of certain fractional diffusion partial differential equa...

Abstract. In this paper we discuss the existence of PC-mild solutions for Cauchy problems and nonlocal problems for impulsive fractional evolution equations involving Caputo fractional derivative. By utilizing the theory of operators semigroup, probability density functions via impulsive conditions, a new concept on a PC-mild solution for our problem is introduced. Our main techniques based on ...

In this article, we provide sufficient conditions for the non-existence of solutions of the boundary-value problems with fractional derivative of order α ∈ (2, 3) in the Riemann-Liouville sense D 0+x(t) + λa(t)f(x(t)) = 0, t ∈ (0, 1), x(0) = x′(0) = x′(1) = 0, and in the Caputo sense Dx(t) + f(t, x(t)) = 0, t ∈ (0, 1), x(0) = x′(0) = 0, x(1) = λ Z 1

The practical stability of a nonlinear nonautonomous Caputo fractional differential equation is studied using Lyapunov like functions. The novelty of this paper is based on the new definition of the derivative of a Lyapunov like function along the given fractional differential equation. Comparison results using this definition for scalar fractional differential equations are presented. Several ...