Physics – Mathematical Physics
Scientific paper
2003-07-07
Physics
Mathematical Physics
Scientific paper
10.1088/0305-4470/37/5/016
We extend two of the methods previously introduced to find discrete
symmetries of differential equations to the case of difference and
differential-difference equations. As an example of the application of the
methods, we construct the discrete symmetries of the discrete Painlev\'e I
equation and of the Toda lattice equation.
Levi Decio
Rodriguez Miguel A.
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