一个3+1维非线性发展方程和Maccari系统的对称群及精确解

Based on the generalized symmetry group method and symbolic computation, firstly, both the Lie point groups and the non-Lie symmetry groups of a (3+1)-dimensional nonlinear evolution equation and Maccari’s system are obtained. Furthermore, some exact solutions of the two equations are derived from some simple solutions by the symmetry groups.