Explicit solutions to the semi-discrete modified KdV equation and motion of discrete plane curves

Details Explicit solutions to the semi-discrete modified KdV equation and motion of discrete plane curves Explicit solutions to the semi-discrete modified KdV equation and motion of discrete plane curves

2011-08-05

arxiv.org/abs/1108.1328v2

Nonlinear Sciences

Exactly Solvable and Integrable Systems

Scientific paper

We construct explicit solutions to continuous motion of discrete plane curves described by a semi-discrete potential modified KdV equation. Explicit formulas in terms the $\tau$ function are presented. B\"acklund transformations of the discrete curves are also discussed. We finally consider the continuous limit of discrete motion of discrete plane curves described by the discrete potential modified KdV equation to motion of smooth plane curves characterized by the potential modified KdV equation.

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