Exact solutions to evolution type nonlinear partial differential equations

In this thesis study, the exact solutions to evolution type nonlinear partial differential equations have been investigated. The exact solutions to (1+1)-dimensional an extended Korteweg–de Vries equation, (2+1)-dimensional Sawada-Kotera equation, a new extended (3+1)-dimensional nonlinear evolution equation, (2+1)-dimensional non-local Ito equation, (2+1)- dimensional the breaking soliton equation and seventh-order time fractional Sawada-Kotera-Ito equation have been obtained. The traveling wave solution, cnoidal wave solution, snoidal wave solution, one soliton solution, two soliton solution, three soliton solution, complexiton solution, multi-soliton solution, lump-type solution, rational solution, soliton solution, positon solution, negaton solution, rational-soliton-positon interaction solution and power series solutions have been obtained. In order to obtain these solutions, the simplest equation method, novel test function method, multiple exp-function method, extended transformed rational function method, lump and lump-type solution algorithm, Wronskian determinant algorithm, power series method and Lie symmetry approaches together with all the steps have been presented.