广义KdV系统的形变映射解

在文[1]中,我们利用变形映射法,构造了Boussinesq方程与三次非线性Klein-Gordon(NKG)方程一类特殊类型解的代数变换关系,得到丰富的精确解。将上述方法进一步推广到广义的KdV系统,获得了该系统丰富的精确行波解,包括孤波解、周期波解和奇异解。

广义的Hirota-Satsuma耦合KdV系统的精确行波解(英文)

本文借助于计算机代数系统Mathematica,利用(G'/G)-展开法成功获得了广义的Hirota-Satsuma耦合KdV系统丰富的精确行波解,并且分别以含两个任意参数的双曲函数、三角函数及有理函数等三种形式表示.

Sub-ODE's New Solutions and Their Applications to Two Nonlinear Partial Differential Equations with Higher-Order Nonlinear Terms

In the present paper, with the aid of symbolic computation, families of new nontrivial solutions of the first-order sub-ODE F12 = AF2 ＋ BF2＋p ＋ CF2＋2p （where F1= dF/dε, p 〉 0） are obtained. To our best knowledge, these nontrivial solutions have not been found in [X.Z. Li and M.L. Wang, Phys. Lett. A 361 （2007） 115] and IS. Zhang, W. Wang, and J.L. Tong, Phys. Lett. A 372 （2008） 3808] and other existent papers until now. Using these nontrivial solutions, the sub-ODE method is described to construct several kinds of exact travelling wave solutions for the generalized KdV-mKdV equation with higher-order nonlinear terms and the generalized ZK equation with higher-order nonlinear terms. By means of this method, many other physically important nonlinear partial differential equations with nonlinear terms of any order can be investigated and new nontrivial solutions can be explicitly obtained with the help of symbolic computation system Maple or Mathematics.