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This paper is concerned with analyzing a class of fractional calculus of variations problems and their associated Euler-Lagrange (fractional differential) equations. Unlike the existing fractional calculus of variations which is based on…

Analysis of PDEs · Mathematics 2021-07-12 Xiaobing Feng , Mitchell Sutton

In order to solve fractional variational problems, there exist two theorems of necessary conditions: an Euler-Lagrange equation which involves Caputo and Riemann-Liouville fractional derivatives, and other Euler-Lagrange equation that…

Optimization and Control · Mathematics 2021-04-12 Melani Barrios , Gabriela Reyero , Mabel Tidball

We obtain Euler-Lagrange equations, transversality conditions and a Noether-like theorem for Herglotz-type variational problems with Lagrangians depending on generalized fractional derivatives. As an application, we consider a damped…

Optimization and Control · Mathematics 2017-07-19 Roberto Garra , Giorgio S. Taverna , Delfim F. M. Torres

We study the fundamental problem of the calculus of variations with variable order fractional operators. Fractional integrals are considered in the sense of Riemann-Liouville while derivatives are of Caputo type.

Optimization and Control · Mathematics 2013-02-07 Tatiana Odzijewicz , Agnieszka B. Malinowska , Delfim F. M. Torres

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

Optimization and Control · Mathematics 2012-05-15 Tatiana Odzijewicz , Agnieszka B. Malinowska , Delfim F. M. Torres

We introduce a stochastic fractional calculus. As an application, we present a stochastic fractional calculus of variations, which generalizes the fractional calculus of variations to stochastic processes. A stochastic fractional…

Optimization and Control · Mathematics 2020-08-10 Houssine Zine , Delfim F. M. Torres

We obtain several Euler-Lagrange equations for variational functionals defined on a set of H\"older curves. The cases when the Lagrangian contains multiple scale derivatives, depends on a parameter, or contains higher-order scale…

Mathematical Physics · Physics 2010-06-01 Ricardo Almeida , Delfim F. M. Torres

Fractional variational approach has gained much attention in recent years. There are famous fractional derivatives such as Caputo derivative, Riesz derivative and Riemann-Liouville derivative. Several versions of fractional variational…

Mathematical Physics · Physics 2010-06-28 Guo-cheng Wu

In this PhD thesis we introduce a generalized fractional calculus of variations. We consider variational problems containing generalized fractional integrals and derivatives, and study them using standard (indirect) and direct methods. In…

Optimization and Control · Mathematics 2014-03-19 Tatiana Odzijewicz

We establish necessary optimality conditions for variational problems with a Lagrangian depending on a combined Caputo derivative of variable fractional order. The endpoint of the integral is free, and thus transversality conditions are…

Optimization and Control · Mathematics 2015-03-30 Dina Tavares , Ricardo Almeida , Delfim F. M. Torres

The aim of this paper is to bring together two approaches to non-conservative systems -- the generalized variational principle of Herglotz and the fractional calculus of variations. Namely, we consider functionals whose extrema are sought,…

Optimization and Control · Mathematics 2014-06-04 Ricardo Almeida , Agnieszka B. Malinowska

We prove Euler-Lagrange and natural boundary necessary optimality conditions for fractional problems of the calculus of variations which are given by a composition of functionals. Our approach uses the recent notions of Riemann-Liouville…

Optimization and Control · Mathematics 2010-09-20 Agnieszka B. Malinowska , Moulay Rchid Sidi Ammi , Delfim F. M. Torres

We consider fractional isoperimetric problems of calculus of variations with double integrals via the recent modified Riemann-Liouville approach. A necessary optimality condition of Euler-Lagrange type, in the form of a multitime fractional…

Optimization and Control · Mathematics 2011-04-05 Tatiana Odzijewicz , Delfim F. M. Torres

In this paper, we study the problems of minimizing a functional depending on the Caputo fractional derivative of order $0< \alpha \leq 1$ and the Riemann- Liouville fractional integral of order $\beta >0$ under certain constraints. A…

Optimization and Control · Mathematics 2025-06-10 Shikhi Sh. Yusubov , Shakir Sh. Yusubov , Elimhan N. Mahmudov

We study problems of the calculus of variations and optimal control within the framework of time scales. Specifically, we obtain Euler-Lagrange type equations for both Lagrangians depending on higher order delta derivatives and…

Optimization and Control · Mathematics 2010-07-30 Rui A. C. Ferreira

The study of fuzzy fractional variational problems in terms of a fractional Liouville-Caputo derivative is introduced. Necessary optimality conditions for problems of the fuzzy fractional calculus of variations with free end-points are…

Optimization and Control · Mathematics 2016-12-26 O. S. Fard , R. Almeida , J. Soolaki , A. H. Borzabadi

Fractional mechanics describes both conservative and non-conservative systems. The fractional variational principles gained importance in studying the fractional mechanics and several versions are proposed. In classical mechanics the…

Mathematical Physics · Physics 2007-08-14 Dumitru Baleanu , Sami I. Muslih , Eqab M. Rabei

In this paper we develop a fractional Hamiltonian formulation for dynamic systems defined in terms of fractional Caputo derivatives. Expressions for fractional canonical momenta and fractional canonical Hamiltonian are given, and a set of…

Mathematical Physics · Physics 2009-11-11 Dumitru Baleanu , Om P. Agrawal

We prove necessary optimality conditions, in the class of continuous functions, for variational problems defined with Jumarie's modified Riemann-Liouville derivative. The fractional basic problem of the calculus of variations with free…

Optimization and Control · Mathematics 2011-05-10 Ricardo Almeida , Delfim F. M. Torres

Fractional generalization of an exterior derivative for calculus of variations is defined. The Hamilton and Lagrange approaches are considered. Fractional Hamilton and Euler-Lagrange equations are derived. Fractional equations of motion are…

Mathematical Physics · Physics 2009-11-11 Vasily E. Tarasov