Symbolic Computation of Lax Pairs of Partial Difference Equations using Consistency Around the Cube

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Symbolic Computation of Lax Pairs of Partial Difference Equations using Consistency Around the Cube

A three-step method due to Nijhoff and Bobenko & Suris to derive a Lax pair for scalar partial difference equations (P Es) is reviewed. The method assumes that the P Es are defined on a quadrilateral, and consistent around the cube. Next, the method is extended to systems of P Es where one has to carefully account for equations defined on edges of the quadrilateral. Lax pairs are presented for ...

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ژورنال

عنوان ژورنال: Foundations of Computational Mathematics

سال: 2012

ISSN: 1615-3375,1615-3383

DOI: 10.1007/s10208-012-9133-9