The investigation into the exact solutions of the nonlinear evolution equations with positive fractional power term

In this paper, the solitary wave solutions of four important nonlinear evolution equations with positive fractional power terms are derived with the aid of two new subsidiary higher order ordinary differential equations (sub-equations for short), and the solitary wave solutions of the special type of these important nonlinear evolution equations are presented. Some exact solutions of these equations obtained before are special cases of our results in this paper.