<正>The discrete complex cubic Ginzburg-Landau equation is an important model to describe a number of physical systems such as Taylor and frustrated vortices in
<正> The generalized Riccati equation vational expansion method is extended in this paper. Several exact solutions for the generalized Burgers-Fisher equation w
<正> In this paper bulk viscosity is introduced to describe the effects of cosmic non-perfect fluid on the cosmosevolution and to build the unified dark energy