On the solutions and conservation laws for the Sharma-Tasso-Olver equation

Abstract

ABSTRACT:We study the Sharma-Tasso-Olver equation from the Lie symmetry point of view. We derive the Lie point symmetry generators of the equation and classify them to obtain the optimal system of one-dimensional subalgebras of the Lie symmetry algebra of the equation. These subalgebras are then used to construct symmetry reductions for the equation. We obtain the general solution of the nonlinear second-order ordinary differential equation which results from the symmetry reduction for the travelling wave group-invariant solutions of the equation by transforming it into a linear third-order ordinary differential equation through a Riccati transformation. Then we show that one can easily obtain the travelling wave exact group-invariant solutions for the underlying equation by using the general solution of the linearized third-order ordinary differential equation and the Riccati transformation. We also construct conservation laws for the underlying equation by making use of the multiplier method.

The Petrov–Galerkin finite element method for the numerical solution of time-fractional Sharma–Tasso–Olver equation

“…In this present analysis, the Sharma-Tasso-Olver equation has been considered, which plays an essential role both in physics and applied mathematics. In recent years, Sharma-Tasso-Olver equations 2,3 had been paid of more attention due to its numerous implementations in mathematical physics.…”

“…The STO equation appears in many scientific applications such as in plasma physics, quantum field theory, nonlinear optics, dispersive wave phenomena and relativistic physics. 2,5,6 Also it arises as an evolution equation that possesses finitely many symmetries. 8 A number of theoretical issues associated to the STO equation have received substantial attention.…”