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We study incommensurate fractional variational problems in terms of a generalized fractional integral with Lagrangians depending on classical derivatives and generalized fractional integrals and derivatives. We obtain necessary optimality…

最优化与控制 · 数学 2013-10-03 Tatiana Odzijewicz , Agnieszka B. Malinowska , Delfim F. M. Torres

The second order weighted and shifted Gr\"{u}nwald difference (WSGD) operators are developed in [Tian et al., arXiv:1201.5949] to solve space fractional partial differential equations. Along this direction, we further design a new family of…

数值分析 · 数学 2017-01-12 Can Li , Weihua Deng

This paper builds on the notion of the so-called orthogonal derivative, where an n-th order derivative is approximated by an integral involving an orthogonal polynomial of degree n. This notion was reviewed in great detail in a paper in J.…

经典分析与常微分方程 · 数学 2014-07-08 E. Diekema

We prove a version of the variational Euler-Lagrange equations valid for functionals defined on Fr\'echet manifolds, such as the spaces of sections of differentiable vector bundles appearing in various physical theories.

泛函分析 · 数学 2018-05-28 José A Vallejo

We discuss an elementary derivation of variational symmetries and corresponding integrals of motion for the Lagrangian systems depending on acceleration. Providing several examples, we make the manuscript accessible to a wide range of…

数学物理 · 物理学 2023-07-18 Ege Coban , Ilmar Gahramanov , Dilara Kosva

Theory of Riemann Extensions of the spaces with constant affine connection for the studying of the properties of nonlinear the first order systems of differential equations is proposed. Quadratic planar system of equations and the Lorenz…

可精确求解与可积系统 · 物理学 2008-07-02 Valery Dryuma

The objective of this paper is to derive analytical solutions of fractional order Laplace, Poisson and Helmholtz equations in two variables derived from the corresponding standard equations in two dimensions by replacing the integer order…

数学物理 · 物理学 2014-08-11 Ram K. Saxena , Zivorad Tomovski , Trifce Sandev

In this brief review, we present the results of the fractional differential approach in cosmology in the context of the exact models of cosmological accelerated expansion obtained by several authors to date. Most of these studies are…

广义相对论与量子宇宙学 · 物理学 2021-05-18 V. K. Shchigolev

A new definition of a fractional derivative has recently been developed, making use of a fractional Dirac delta function as its integral kernel. This derivative allows for the definition of a distributional fractional derivative, and as…

经典分析与常微分方程 · 数学 2018-05-16 Evan Camrud

The details of second-order partial derivatives of rigid-body Inverse/Forward dynamics are provided. Several properties and identities using Spatial Vector Algebra are listed, along with their detailed derivations. The expressions build…

机器人学 · 计算机科学 2023-08-01 Shubham Singh , Ryan P. Russell , Patrick M. Wensing

The Liouville and first Bogoliubov hierarchy equations with derivatives of noninteger order are derived. The fractional Liouville equation is obtained from the conservation of probability to find a system in a fractional volume element.…

统计力学 · 物理学 2015-03-12 Vasily E. Tarasov

We consider one-dimensional chain of coupled linear and nonlinear oscillators with long-range power-wise interaction. The corresponding term in dynamical equations is proportional to $1/|n-m|^{\alpha+1}$. It is shown that the equation of…

斑图形成与孤子 · 物理学 2015-02-06 Vasily E. Tarasov , George M. Zaslavsky

We define an infinite class of unitary transformations between position and momentum fractional spaces, thus generalizing the Fourier transform to a special class of fractal geometries. Each transform diagonalizes a unique Laplacian…

数学物理 · 物理学 2015-03-20 Gianluca Calcagni , Giuseppe Nardelli

The thesis deals with applications of fractional calculus to fractals. It introduces the notion of local fractional derivative (LFD). Fractal and multifractal functions have been studied in the thesis using LFD. New kind of equations are…

chao-dyn · 物理学 2007-05-23 Kiran M. Kolwankar

We begin with a brief overview of the most commonly used fractional derivatives, namely the Caputo and Riemann-Liouville derivatives. We then focus on the study of the fractional time wave equation with the Riemann-Liouville derivative,…

偏微分方程分析 · 数学 2025-02-18 Paola Loreti , Daniela Sforza

This paper is an edited and shortened version of Chapter 6 from the thesis of the author. First the one dimensional orthogonal derivative will be extended to the two-dimensional case. In the two-dimensional case we have to define the region…

经典分析与常微分方程 · 数学 2020-12-29 Enno Diekema

On a series of examples from the field of viscoelasticity we demonstrate that it is possible to attribute physical meaning to initial conditions expressed in terms of Riemann-Liouville fractional derivatives, and that it is possible to…

数学物理 · 物理学 2007-05-23 Nicole Heymans , Igor Podlubny

Fractional supersymmetric quantum mechanics of order $\lambda$ is realized in terms of the generators of a generalized deformed oscillator algebra and a Z$_{\lambda}$-grading structure is imposed on the Fock space of the latter. This…

数学物理 · 物理学 2008-11-26 C. Quesne

In this paper, certain generalized fractional derivative formulae are introduced involving the k-Mittag-Leffler function. Then their image formulae (using Beta transform, Laplace transform and Whittaker transform) are also established. The…

泛函分析 · 数学 2019-02-08 Mehar Chand , Jatinder Kumar Bansal

The concept of fractional order derivative can be found in extensive range of many different subject areas. For this reason, the concept of fractional order derivative should be examined. After giving different methods mostly used in…

综合数学 · 数学 2013-06-25 Ali Karci