Symbolic Computation of Conservation Laws, Generalized Symmetries, and Recursion Operators for Nonlinear Differential-Difference Equations
Abstract
Algorithms for the symbolic computation of polynomial conservation laws, generalized symmetries, and recursion operators for systems of nonlinear differential-difference equations (DDEs) are presented. The algorithms can be used to test the complete integrability of nonlinear DDEs. The ubiquitous Toda lattice illustrates the steps of the algorithms, which have been implemented in {\em Mathematica}. The codes {\sc InvariantsSymmetries.m} and {\sc DDERecursionOperator.m} can aid researchers interested in properties of nonlinear DDEs.
- Publication:
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arXiv e-prints
- Pub Date:
- April 2011
- DOI:
- 10.48550/arXiv.1104.4582
- arXiv:
- arXiv:1104.4582
- Bibcode:
- 2011arXiv1104.4582G
- Keywords:
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- Mathematical Physics;
- Computer Science - Symbolic Computation;
- Mathematics - Analysis of PDEs;
- Nonlinear Sciences - Exactly Solvable and Integrable Systems
- E-Print:
- 16 pages, will appear as Chapter 7 in a Springer Book entitled "Nonlinear Systems and Methods For Mechanical, Electrical and Biosystems" with editors: Albert Luo, J.A. Tenreiro Machado and Dumitru Baleanu, expected to be published in 2011