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《Communications in Theoretical Physics》 2017年07期
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Interactions of Soliton Waves for a Generalized Discrete KdV Equation

周统  朱佐农  
【摘要】:It is well known that soliton interactions in discrete integrable systems often possess new properties which are different from the continuous integrable systems, e.g., we found that there are such discrete solitons in a semidiscrete integrable system(the time variable is continuous and the space one is discrete) that the shorter solitary waves travel faster than the taller ones. Very recently, this kind of soliton was also observed in a full discrete generalized Kd V system(the both of time and space variables are discrete) introduced by Kanki et al. In this paper, for the generalized discrete Kd V(gd Kd V) equation, we describe its richer structures of one-soliton solutions. The interactions of two-soliton waves to the gd Kd V equation are studied. Some new features of the soliton interactions are proposed by rigorous theoretical analysis.

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