Trajectory equation of a lump before and after collision with line, lump, and breather waves for (2+1)-dimensional Kadomtsev–Petviashvili equation<xref rid="cpb_28_11_110201fn1" ref-type="fn">*</xref><fn id="cpb_28_11_110201fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11775121, 11805106, and 11435005) and K C Wong Magna Fund in Ningbo University, China.</p></fn>

Trajectory equation of a lump before and after collision with line, lump, and breather waves for (2+1)-dimensional Kadomtsev–Petviashvili equation**

Project supported by the National Natural Science Foundation of China (Grant Nos. 11775121, 11805106, and 11435005) and K C Wong Magna Fund in Ningbo University, China.

Zhang Zhao, Yang Xiangyu, Li Wentao, Li Biao^†

The first-order lump solution to Eq. (1) with parameters α = −1, K1=K2¯=−1+i , P₁ = P₂ = 2. (a) The first-order lump solution at t = 0; (b) The trajectory of the lump y = x.