Group classification of quasilinear third-order evolution equations is given by using the classical infinitesimal Lie method,the technique of equivalence transf
By converting an optimal control problem for nonlinear systems to a Hamiltonian system,a symplecitc-preserving method is proposed.The state and costate variable
This paper addresses the regularity and finite dimensionality of the global attractor for the plate equation on the unbounded domain.The existence of the attrac