本文通过把十二个Jacobi椭圆函数分类成四组,从而提出一个新的广义Jacobi椭圆函数展开法来构造非线性演化方程的精确双周期解。在数学软件Maple的帮助下,应用这个非常有效的方法求出了非线性演化方程的许多解,当模数m→0或1时,这些解退化为相应的孤立波解或三角函数解。In this letter, twelve Jacobi elliptic functions are divided into four groups, and a new general Jacobi elliptic function expansion method is proposed to construct abundant exact doubly periodic solutions of nonlinear evolution equations. As a result, with the aid of computer symbolic computation software (for example, Maple), many exact doubly periodic solutions are obtained which shows that this method is very powerful. When the modulus m→0 or 1, these solutions degenerate to the corresponding solitary wave solutions and trigonometric function (singly periodic) solutions.
一个新的广义的Jacobi椭圆函数有理展开法被提出来构造非线性波动方程的有理解。利用这个直接有效的方法,获得了许多关于Jacobi椭圆函数的有理解。当模数m→0或1时,这些解退化为相应的关于孤立波或三角函数的有理解。A new general Jacobi elliptic function rational expansion procedure is presented for constructing rational solutions of nonlinear wave equations in terms of the Jacobi elliptic function. As a consequence, many new rational form Jacobi elliptic function solutions are obtained by this powerful and direct method. Moreover, the corresponding rational form solitary wave solutions and rational form trigonometric function solutions are also obtained when the modulus m→0 or 1.
