利用Painlevé分析的WTC方法,验证了耿方程具有Painlevé性质并给出其自Backlund变换.通过Painlevé截断展开法,给出双曲函数型与三角函数型的孤立波解、定态解和有理解.
The Geng equation is proved to have Painleve property and the auto-Backlund transforma- tion is obtained. The hyperbolic and triangular function type solitary wave solutions, steady state solutions and rational solutions of Geng equation are also presented by use of the truncated Painleve expansion method.