Lie symmetries of difference equations
Exactly Solvable and Integrable Systems
2009-10-31 v1
Abstract
The discrete heat equation is worked out in order to illustrate the search of symmetries of difference equations. It is paid an special attention to the Lie structure of these symmetries, as well as to their dependence on the derivative discretization. The case of q-symmetries for discrete equations in a q-lattice is also considered.
Cite
@article{arxiv.nlin/0012043,
title = {Lie symmetries of difference equations},
author = {D. Levi and J. Negro and M. A. del Olmo},
journal= {arXiv preprint arXiv:nlin/0012043},
year = {2009}
}
Comments
8 pages, LaTeX2e. Proceedings of the DI-CRM Workshop, Prague, July 2000