共查询到17条相似文献,搜索用时 78 毫秒
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mKdV方程的多孤子解很难直接验证,本文通过证明GLM反散射变换方程导出的Jost解满足两个相容性方程的方法,解决了这个问题. 相似文献
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MKdV方程的反散射解 总被引:2,自引:0,他引:2
本文考虑修正KdV(MKdV)方程u_t+6u~2u_x+u_(xxx)=0的反散射解,给出当反射系数为零且特征根为纯虚数时解的简洁表达式,并讨论了单孤子解和双孤子解。 相似文献
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求解NLS+方程暗孤子解的问题早已解决,但其求解过程需要对Jost解的解析性进行繁杂的理论分析.本文用一种简单的方法,把求解NLS+方程暗孤子解的问题归结为纯粹的代数运算. 相似文献
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研究KdV方程纯孤立子解的整体渐近性质,证明了N-孤立子解一致收敛到N个单孤立子解的叠加.进而得到了N-孤立子解在L1-范数意义下的渐近结果,并借此阐述了纯孤立子解与一般速降解的差异. 相似文献
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该文指出:利用Darboux变换不但可以非常简洁地得到文献[1]关于KdV方程单孤子解和双孤子解,而且便于讨论KdV方程的任意孤子解的性质.通过对KdV方程三孤子解的重点讨论,以及对KdV方程多孤子解的解析分析,得到了关于KdV方程任意阶孤子解的一些非常有意义的普遍结果.这些结果对于人们深入了解孤子相互作用规律具有重要的现实意义. 相似文献
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赵露 《纯粹数学与应用数学》2018,(2):118-127
根据简化的Hirota双线性方法和cole-hopf变换,当双模Jordan KdV方程中的非线性参数与线性参数取特殊值时,得到了双模Jordan KdV方程的多孤子解.同时,当方程中非线性参数与线性参数取一般值,也得到了这个方程的其它的精确解. 相似文献
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In this paper, an extended simplest equation method is proposed to seek exact travelling wave solutions of nonlinear evolution equations. As applications, many new exact travelling wave solutions for several forms of the fifth-order KdV equation are obtained by using our method. The forms include the Lax, Sawada-Kotera, Sawada-Kotera-Parker-Dye, Caudrey-Dodd-Gibbon, Kaup-Kupershmidt, Kaup-Kupershmidt-Parker-Dye, and the Ito forms. 相似文献
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将研究具有分布时滞的K dV方程Ut+(f*U)Ux+τUxx+Uxxx=0,得出当时滞核函数为弱一般核时,时滞方程周期行波解的存在性. 相似文献
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Quasi-interpolation is very useful in the study of approximation theory and its applications,since it can yield solutions directly without the need to solve any linear system of equations.Based on the good performance,Chen and Wu presented a kind of multiquadric (MQ) quasi-interpolation,which is generalized from the L D operator,and used it to solve hyperbolic conservation laws and Burgers’ equation.In this paper,a numerical scheme is presented based on Chen and Wu’s method for solving the Korteweg-de Vries (KdV) equation.The presented scheme is obtained by using the second-order central divided difference of the spatial derivative to approximate the third-order spatial derivative,and the forward divided difference to approximate the temporal derivative,where the spatial derivative is approximated by the derivative of the generalized L D quasi-interpolation operator.The algorithm is very simple and easy to implement and the numerical experiments show that it is feasible and valid. 相似文献
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In this paper,we present a solution methodology to obtain exact solutions of some nonlinear evolution equation by modifying the homogeneous balance method.Based on the modified homogeneous balance method,several kinds of exact(new)solutions of the generalized KdV equation are obtained. 相似文献