（3＋1）维Kadomtsev-Petviashvili方程的N孤子解

摘要

利用Hirota双线性导数和形式摄动方法得到了（3＋1）维Kadomtsev-Petviashvili方程的单孤子解、双孤子解及N孤子解的解析表达式.%The exact expressions of one soliton solution,two-soliton solution and the N soliton solution to the（3＋1）-dimensional Kadomtsev Petviashvili equation are presented by using of Hirota bilinear method and perturbation approach.