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Bäcklund–Darboux Transformations and Discretizations of Super KdV Equation

By Ling-ling Xue and Qing Ping Liu


Abstract. For a generalized super KdV equation, three Darboux transformations and the corresponding Bäcklund transformations are constructed. The compatibility of these Darboux transformations leads to three discrete systems and their Lax representations. The reduction of one of the Bäcklund–Darboux transformations and the corresponding discrete system are considered for Kupershmidt’s super KdV equation. When all the odd variables vanish, a nonlinear superposition formula is obtained for Levi’s Bäcklund transformation for the KdV equation. Key words: super integrable systems; KdV; Bäcklund–Darboux transformations; discrete integrable systems 2010 Mathematics Subject Classification: 35Q53; 37K10; 35A30

Year: 2016
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