Notes on “The new exact solitary and multi-soliton solutions for the (2+1)-dimensional Zakharov–Kuznetsov equation”

Abstract

In a recent paper referred to in the title, the author investigated a (2+1)-dimensional Zakharov–Kuznetsov (ZK) equation and claimed that with the aid of the coupled Burgers’ equations, a new multi-soliton solution were formally generated. We argue that the generated N-soliton solutions in the case of N≥2 is incorrect and is not admitted by the original (2+1)-dimensional ZK equation.