Lie symmetries of difference equations

Details Lie symmetries of difference equations Lie symmetries of difference equations

2000-12-21

arxiv.org/abs/nlin/0012043v1

Nonlinear Sciences

Exactly Solvable and Integrable Systems

8 pages, LaTeX2e. Proceedings of the DI-CRM Workshop, Prague, July 2000

Scientific paper

10.1023/A:1017541506672

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.

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