Some Special Types of Solitary Wave Solutions for the (3+1)-Dimensional Kadomtsev–Petviashvilli Equation**The project supported by National Natural Science Foundation, "Scaling Plan" of China, and the Natural Science Foundation of Zhejiang Province of China

Abstract

Using the standard truncated Painlevé analysis, we have obtained some special types of exact explicit solitary wave solutions of the (3+1)-dimensional Kadomtsev-Petviashvilli equations. Usually, one obtains the single solitary wave solution from the Bäcklund transformation related to the truncated Painlevé analysis starting from the trivial vacuum solution. In this letter, we find some special types of the multi-solitary wave solution from the truncated Painlevé analysis and the trivial vacuum solution.