The Canonical Symmetry and Hamiltonian Formalism. II. Hamiltonian Operators
arXiv:hep-th/9306142
Abstract
It is shown how the canonical symmetry is used to look for the hierarchy of the Hamiltonian operators relevant to the system under consideration. It appears that only the invariance condition can be used to solve the problem.
13 pages, LaTeX file, IHEP 93-69