The D'Alembert type waves and the soliton molecules in a (2+1)-dimensional Kadomtsev-Petviashvili with its hierarchy equation*

Hui-Ling Wu(吴慧伶),Sheng-Wan Fan(樊盛婉),Jin-Xi Fei(费金喜),Zheng-Yi Ma(马正义)

Figure 5. The elastic interaction between the line soliton molecule and a lump of the solution v from equations (17) and (53) at (a) t = −2, (b) t = −1.3, (c) t = 0 and (d) t = 1, respectively.