Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/10514
Title: | Discrete Direct Methods in the Fractional Calculus of Variations |
Author: | Pooseh, Shakoor Almeida, Ricardo Torres, Delfim F. M. |
Keywords: | Fractional calculus Fractional calculus of variations Direct methods |
Issue Date: | 2012 |
Publisher: | FDA |
Abstract: | Finite differences, as a subclass of direct methods in the calculus of variations, consist in discretizing the objective functional using appropriate approximations for derivatives that appear in the problem. This article generalizes the same idea for fractional variational problems. We consider a minimization problem with a Lagrangian that depends on the left Riemann– Liouville fractional derivative. Using the Gr¨unwald–Letnikov definition, we approximate the objective functional in an equispaced grid as a multi-variable function of the values of the unknown function on mesh points. The problem is then transformed to an ordinary static optimization problem. The solution to the latter problem gives an approximation to the original fractional problem on mesh points. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/10514 |
Publisher Version: | http://em.hhu.edu.cn/fda12/index.html |
Appears in Collections: | CIDMA - Comunicações DMat - Comunicações SCG - Comunicações |
Files in This Item:
File | Description | Size | Format | |
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PoosehAlmeidaTorresDMethodIFA.pdf | 108.17 kB | Adobe PDF | View/Open |
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