1. Department of Mathematics, Dalian University of Technology, Dalian 116023, China;2. Department of Mathematics, East China Normal University, Shanghai 200062, China
Abstract:
Some new Hamiltonian canonical system are discussed for a series of partial differential equations in Mathematics and Physics. It includes the Hamiltonian formalism for the symmetry second_order equation with the variable coefficients, the new nonhomogeneous Hamiltonian representation for fourth_order symmetry equation with constant coefficients, the one of MKdV equation and KP equation.