Particularly useful when expressed in action-angle variables, it is the operator for which eigenvalues are sought in the Schrodinger equation.  
Particularly useful when expressed in action-angle variables, it is the operator for which eigenvalues are sought in the Schrodinger equation.  A function of the canonical positions and momenta, under certain conditions it is equal to the energy of the system.  For ten points, what function of classical mechanics, named for an Irish mathematician, is closely related to the Lagrangian?
Particularly useful when expressed in action-angle variables, it is the operator for which eigenvalues are sought in the Schrodinger equation.  
Hamiltonian