Multi-wave solutions of the space-time fractional Burgers and Sharma-Tasso-Olver equations

Based on the improved generalized exp-function method, the space-time fractional Burgers and Sharma-Tasso-Olver equations were studied. The single-wave, double-wave, three-wave and four-wave solution discussed. With the best of our knowledge, some of the results are obtained for the first time. The improved generalized exp-function method can be applied to other fractional differential equations. (C) 2015 Production and hosting by Elsevier B.V. on behalf of Ain Shams University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).