Journal
OPEN PHYSICS
Volume 14, Issue 1, Pages 26-36Publisher
SCIENDO
DOI: 10.1515/phys-2015-0056
Keywords
multi-soliton rational solution; generalized unified method; Korteweg-de Vries equation; (2+1)-dimensional Nizhnik-Novikov-Veselov equation
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The Korteweg-de Vries equation (KdV) and the (2+ 1)-dimensional Nizhnik-Novikov-Veselov system (NNV) are presented. Multi-soliton rational solutions of these equations are obtained via the generalized unified method. The analysis emphasizes the power of this method and its capability of handling completely (or partially) integrable equations. Compared with Hirota's method and the inverse scattering method, the proposed method gives more general exact multi-wave solutions without much additional effort. The results show that, by virtue of symbolic computation, the generalized unified method may provide us with a straightforward and effective mathematical tool for seeking multi-soliton rational solutions for solving many nonlinear evolution equations arising in different branches of sciences.
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