A new compound Riccati equations rational expansion method and its application to the (2+1)-dimensional asymmetric Nizhnik–Novikov–Vesselov system

Abstract In this paper, based on a new general ansatze and symbolic computation, a new compound Riccati equations rational expansion method is proposed. Being concise and straightforward, it is applied to the (2 + 1)-dimensional asymmetric Nizhnik–Novikov–Vesselov system. It is shown that more complexiton solutions can be found by this new method. The method can be applied to other nonlinear partial differential equations in mathematical physics.

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