# American Institute of Mathematical Sciences

May  2010, 13(3): 633-646. doi: 10.3934/dcdsb.2010.13.633

## Some new results on explicit traveling wave solutions of $K(m, n)$ equation

 1 School of Mathematical Sciences, Peking University, Beijing 100871

Received  May 2009 Revised  December 2009 Published  February 2010

In this paper, we investigate the traveling wave solutions of $K(m, n)$ equation $u_t+a(u^m)_{x}+(u^n)_{x x x}=0$ by using the bifurcation method and numerical simulation approach of dynamical systems. We obtain some new results as follows: (i) For $K(2, 2)$ equation, we extend the expressions of the smooth periodic wave solutions and obtain a new solution, the periodic-cusp wave solution. Further, we demonstrate that the periodic-cusp wave solution may become the peakon wave solution. (ii) For $K(3, 2)$ equation, we extend the expression of the elliptic smooth periodic wave solution and obtain a new solution, the elliptic periodic-blow-up solution. From the limit forms of the two solutions, we get other three types of new solutions, the smooth solitary wave solutions, the hyperbolic 1-blow-up solutions and the trigonometric periodic-blow-up solutions. (iii) For $K(4, 2)$ equation, we construct two new solutions, the 1-blow-up and 2-blow-up solutions.
Citation: Rui Liu. Some new results on explicit traveling wave solutions of $K(m, n)$ equation. Discrete & Continuous Dynamical Systems - B, 2010, 13 (3) : 633-646. doi: 10.3934/dcdsb.2010.13.633
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