Assessment of the Exact Solutions of the Space and Time Fractional Benjamin-Bona-Mahony Equation via the G ′ / G -Expansion Method, Modified Simple Equation Method, and Liu’s Theorem

Exact travelling wave solutions to the space and time fractional Benjamin-Bona-Mahony (BBM) equation defined in the sense of Jumarie’s modified Riemann-Liouville derivative via the ( G ′ / G ) expansion and the modified simple equation methods are presented in this paper. A fractional complex transformation was applied to turn the fractional BBM equation into an equivalent integer order ordinary differential equation. New complex type travelling wave solutions to the space and time fractional BBM equation were obtained with Liu’s theorem. The modified simple equation method is not effective for constructing solutions to the fractional BBM equation.