In this paper, the problem of determining the most general Lie point symmetries group and
conservation laws of a well known nonlinear hyperbolic PDE in mathematical physics called …

Using the Lie classical method, the potential symmetry of the generalized hyperbolic
quasilinear and Boussinesq equations is investigated. To find these symmetries in specific …

In the present paper, the equivalence problem for fourth-order differential operators with one
variable under general fiber-preserving transformation using the Cartan method of …

New explicit Lie algebras are introduced for which the nonlinear integrable couplings of the
Li soliton hierarchy are obtained. Then, the nonlinear integrable couplings of Li soliton …