Journal
MATHEMATICS AND COMPUTERS IN SIMULATION
Volume 190, Issue -, Pages 270-279Publisher
ELSEVIER
DOI: 10.1016/j.matcom.2021.05.020
Keywords
N-soliton solution; Hirota N-soliton condition; (2+1)-dimensional integrable equations
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Funding
- NSFC [11975145, 11972291]
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This study focuses on constructing N-soliton solutions within the Hirota bilinear formulation and analyzing the Hirota N-soliton conditions in (2+1)-dimensions. A generalized algorithm for proving the Hirota conditions is presented, along with the introduction of two weight numbers to achieve homogeneity of the related polynomials. An application is developed for a general combined nonlinear equation to provide proof of existence of its N-soliton solutions.
Within the Hirota bilinear formulation, we construct N-soliton solutions and analyze the Hirota N-soliton conditions in (2+1)-dimensions. A generalized algorithm to prove the Hirota conditions is presented by comparing degrees of the multivariate polynomials derived from the Hirota function in N wave vectors, and two weight numbers are introduced for transforming the Hirota function to achieve homogeneity of the related polynomials. An application is developed for a general combined nonlinear equation, which provides a proof of existence of its N-soliton solutions. The considered model equation includes three integrable equations in (2+1)-dimensions: the (2+1)-dimensional KdV equation, the Kadomtsev-Petviashvili equation, and the (2+1)-dimensional Hirota-Satsuma-Ito equation, as specific examples. (C) 2021 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.
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