In this paper, we derive three conservation laws and three invariants of motion for the generalized Gardner equation … derivation of these conservation laws and their associated invariants of motion is direct and does not involve the use of … variational principles. It can be easily applied for finding similar invariants of motion for other general types of KdV, Gardner …

minors of order 2 belonging to K(t); (b) several invariants of motion can be derived from the metric tensor; and (c …

(CSNCO) associated to a given Hamiltonian is expressed. We found refined time-dependent invariants of motion (TDIM) for the …

Invariants of motion are constructed departing from the Gibbs entropy. The method we applied also allows us to find the …

expressions for three invariants of motion for solitary wave solutions of the generalized EW equation are also devised. …