直接法求两个非线性发展方程的周期解

With symbolic computation, the Hirota method and Riemann theta function are employed to directly construct the periodic wave solutions for Hirota-Satsuma equa- tion for shallow water waves and Boiti-Leon-Manna-Pempinelli equation. Then, the corresponding 痝ures of the periodic wave solutions are given. Furthermore, it is shown that the known soliton solutions can be reduced from the periodic wave solutions.