Abstract
In this paper, firstly, the general projective Riccati equation method (PREM) is applied to derive variable separation solutions of the (2 + 1)-dimensional Boiti–Leon–Pempinelli (BLP) equation. By further studying, we find that these variable separation solutions, which seem independent, actually depend on each other. Based on the variable separation solution and by selecting appropriate multi-valued functions, novel interactions between a special bell-like semi-foldon and a special peakon-like semi-foldon are investigated.
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