Melike Karta - Department of Mathematics, Faculty of Science and Arts, Ağrı İbrahim Çeçen University, Ağrı, Turkey.

A hybrid method utilizing the collocation technique with B-splines and Lie-Trotter splitting algorithm applied for ۳ model problems which include a single solitary wave,  two solitary wave interaction, and a Maxwellian initial condition is designed for getting the approximate solutions for the generalized equal width (GEW) equation. Initially, the considered problem has been split into ۲ sub-equations as linear U_t=\hat{A}(U) and nonlinear U_t=\hat{B}(U) in the  terms of time.  After, numerical schemes have been constructed for these sub-equations utilizing the finite element method (FEM) together with quintic B-splines. Lie-Trotter splitting technique \hat{A}o\hat{B} has been  used to generate approximate solutions of the main equation. The stability analysis of acquired numerical schemes has been examined by the Von Neumann method. Also, the error norms L_۲ and L_\infty with mass, energy, and momentum conservation constants I_۱, I_۲, and I_۳, respectively are calculated to illustrate how perfect solutions this new algorithm applied to the problem generates and the ones produced are compared with those in the literature. These new results exhibit that the algorithm presented in this paper is more accurate and successful, and easily applicable to other non-linear partial differential equations (PDEs) as the present equation.

B-splines, Lie-Trotter splitting, Collocation method, Generalized Equal Width equation