The constraint equation which must hold for the reciprocal of a known solution for the Korteweg-de Vries (KdV) equation to be a solution itself is derived. These reciprocal solutions are required to satisfy a differential equation which is in fact a Painleve equation. A differential constraint is also derived which allows the product of two solutions of the KdV equation to be a new solution as well. (C) 2003 Elsevier B.V. All rights reserved.
机构:
Beihang Univ, Sch Math & Syst Sci, Beijing 100191, Peoples R China
Minist Educ, LMIB, Beijing 100191, Peoples R ChinaUniv Cincinnati, Dept Math Sci, Cincinnati, OH 45221 USA
Jia, Chaohua
Zhang, Bing-Yu
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机构:
Univ Cincinnati, Dept Math Sci, Cincinnati, OH 45221 USA
Sichuan Univ, Yangtz Ctr Math, Chengdu 610064, Peoples R ChinaUniv Cincinnati, Dept Math Sci, Cincinnati, OH 45221 USA
机构:
Univ Modena & Reggio Emilia, Dept Sci & Methods Engn, Via G Amendola 2, I-42122 Reggio Emilia, ItalyUniv Bari, Dept Math, Via E Orabona 4, I-70125 Bari, Italy