arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv math-ph/0211018math-phmath.MP
收藏

耦合KdV-MKdV系统的解析解和数值解

Analytical and numerical solution of a coupled KdV-MKdV system

A. A. Halim, S. B. Leble

摘要:

在($-\infty,+\infty$)中考虑了关于x的二阶矩阵2 × 2谱微分方程.我们建立了问题的初等达布变换协方差,并分析了它的组合。我们选择第二个协变方程来构成耦合KdV-MKdV系统的拉克斯对。通过对零势种子的初等达布变换序列的变换,得到了耦合KdV-MKdV系统的双参数约化解.我们所得到的解决方案(现实,奇异性)的参数的影响。介绍了一般耦合KdV-MKdV系统的数值计算方法。该方法是基于任意数量的常系数方程的柯西问题的差分格式。我们分析了稳定性,并证明了该计划的收敛性,这也是通过数值模拟的显式解决方案进行了测试。

英文摘要:

The matrix 2x2 spectral differential equation of the second order is considered on x in ($-\infty,+\infty$). We establish elementary Darboux transformations covariance of the problem and analyze its combinations. We select a second covariant equation to form Lax pair of a coupled KdV-MKdV system. The sequence of the elementary Darboux transformations of the zero-potential seed produce two-parameter solution for the coupled KdV-MKdV system with reductions. We show effects of parameters on the resulting solutions (reality, singularity). A numerical method for general coupled KdV-MKdV system is introduced. The method is based on a difference scheme for Cauchy problems for arbitrary number of equations with constants coefficients. We analyze stability and prove the convergence of the scheme which is also tested by numerical simulation of the explicit solutions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑