New exact periodic solutions to (2+1)-dimensional dispersive long wave equations.

In this paper, we make use of the auxiliary equation and the expanded mapping methods to find the new exact periodic solutions for (2+1)-dimensional dispersive long wave equations in mathematical physics, which are expressed by Jacobi elliptic functions, and obtain some new solitary wave solutions (m - 1). This method can also be used to explore new periodic wave solutions for other nonlinear evolution equations. [ABSTRACT FROM AUTHOR]