Abstract
In this paper, the three-wave solution of ($$2+1$$)-dimensional generalized Korteweg-de Vries equation is obtained by using Hirotas bilinear method and three-wave method. We study the deformation characteristics of three-wave solution by taking different parameter values. A new lump solution is obtained when we study the degenerate behavior of three-wave solutions. Besides, we give an existence theorem of the interaction between lump solution and different forms of N-solitons ($$N\rightarrow \infty $$) and give a detailed calculation and proof process. Some new interaction solutions, such as lump N-solitons type, lump N-logarithmic type, lump cos–sin–exponential type, higher-order lump-type solutions, are used as examples to illustrate the correctness and effectiveness of the description theorem. We also give the evolutionary structure plots of the superposition behavior between lump solutions and solitons, and study the interaction behavior between lump-type solutions and solitons.
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