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We investigate evolution equations for anomalous diffusion employing fractional derivatives in space and time. Linkage between the space-time variables leads to a new type of fractional derivative operator. Fractional diffusion equations…

数学物理 · 物理学 2007-05-23 Andrzej J. Turski , Barbara Atamaniuk , Ewa Turska

In this paper we consider a generalized classical mechanics with fractional derivatives. The generalization is based on the time-clock randomization of momenta and coordinates taken from the conventional phase space. The fractional…

经典物理 · 物理学 2011-11-15 Aleksander Stanislavsky

In this paper, we are interested in the study of a problem with fractional derivatives having boundary conditions of integral types. The problem represents a Caputo type advection-diffusion equation where the fractional order derivative…

数值分析 · 数学 2021-02-23 Saadoune Brahimi , Ahcene Merad , Adem Kilicman

In this work we study Cauchy problem for a high-order differential equation $\frac{\partial u(y,x)}{\partial y}+P(\frac{\partial}{\partial x})u(y,x)=\gamma\frac{\partial}{\partial x}(u^2(y,x))+F(y,x)$. We prove that the problem is…

数学物理 · 物理学 2011-06-01 Z. A. Sobirov , S. Abdinazarov

We construct and study a time--semidiscretization scheme for the Cauchy problem associated with a linear homogeneous differential equation with the Caputo fractional time derivative of order $\alpha\in(0,1)$ and a spatial sectorial operator…

数值分析 · 数学 2017-12-11 M. M. Kokurin

We introduce a new numerical method, based on Bernoulli polynomials, for solving multiterm variable-order fractional differential equations. The variable-order fractional derivative was considered in the Caputo sense, while the…

数值分析 · 数学 2021-11-18 Somayeh Nemati , Pedro M. Lima , Delfim F. M. Torres

In this paper, we consider the Cauchy problem for the fractional Camassa-Holm equation which models the propagation of small-but-finite amplitude long unidirectional waves in a nonlocally and nonlinearly elastic medium. Using Kato's…

偏微分方程分析 · 数学 2018-07-12 Nilay Duruk Mutlubas

Two approximations, derived from continuous expansions of Riemann-Liouville fractional derivatives into series involving integer order derivatives, are studied. Using those series, one can formally transform any problem that contains…

最优化与控制 · 数学 2013-05-10 Shakoor Pooseh , Ricardo Almeida , Delfim F. M. Torres

This paper deals with initial value problems for fractional functional differential equations with bounded delay. The fractional derivative is defined in the Caputo sense. By using the Schauder fixed point theorem and the properties of the…

经典分析与常微分方程 · 数学 2017-05-18 Chung-Sik Sin

We provide a fast and simple method to solve fractional variational problems with dependence on Hadamard fractional derivatives. Using a relation between the Hadamard fractional operator and a sum involving integer-order derivatives, we…

最优化与控制 · 数学 2014-05-07 Ricardo Almeida , Nuno R. O. Bastos , Delfim F. M. Torres

In the present work, an attempted was made to develop a numerical algorithm by the use of new orthogonal hybrid functions formed from hybrid of piecewise constant orthogonal sample-and-hold functions and piecewise linear orthogonal…

数值分析 · 数学 2018-01-23 Seshu Kumar Damarla , Madhusree Kundu

In this paper, a fractional generalization of the wave equation that describes propagation of damped waves is considered. In contrast to the fractional diffusion-wave equation, the fractional wave equation contains fractional derivatives of…

数学物理 · 物理学 2021-03-12 Yuri Luchko

We study finite element approximations of the nonhomogeneous Dirichlet problem for the fractional Laplacian. Our approach is based on weak imposition of the Dirichlet condition and incorporating a nonlocal analogous of the normal derivative…

数值分析 · 数学 2019-02-05 Gabriel Acosta , Juan Pablo Borthagaray , Norbert Heuer

We prove Hardy-type inequalities for a fractional Dunkl--Hermite operator which incidentally give Hardy inequalities for the fractional harmonic oscillator as well. The idea is to use $h$-harmonic expansions to reduce the problem in the…

经典分析与常微分方程 · 数学 2016-09-06 Ó. Ciaurri , L. Roncal , S. Thangavelu

Through duality it is possible to transform left fractional operators into right fractional operators and vice versa. In contrast to existing literature, we establish integration by parts formulas that exclusively involve either left or…

最优化与控制 · 数学 2024-05-02 Delfim F. M. Torres

We consider the Cauchy problem for inhomogeneous linear moment differential equations with holomorphic time dependent coefficients. Using such tools as the formal norms, theory of majorants and the properties of the Newton polygon, we…

偏微分方程分析 · 数学 2019-11-28 Sławomir Michalik , Maria Suwińska

In the paper a new numerical-analytical method for solving the Cauchy problem for systems of ordinary differential equations of special form is presented. The method is based on the idea of the FD-method for solving the operator equations…

数值分析 · 数学 2011-01-04 Makarov Volodymyr , Dragunov Denis

We consider a Cauchy problem for a Hamilton--Jacobi equation with coinvariant derivatives of an order $\alpha \in (0, 1)$. Such problems arise naturally in optimal control problems for dynamical systems which evolution is described by…

最优化与控制 · 数学 2024-04-25 Mikhail Gomoyunov

The purpose of this article is to address the issues of dimensional consistency that arise in the process of replacing the ordinary time derivative operator by a fractional derivative operator in order to write a fractional differential…

数学物理 · 物理学 2026-04-06 Gabriel Gonzalez

In this work a classical derivation of fractional order circuits models is presented. Generalized constitutive equations in terms of fractional Riemann-Liouville derivatives are introduced in the Maxwell's equations. Next the Kirchhoff…

经典物理 · 物理学 2016-02-12 Miguel Angel Moreles , Rafael Lainez