We cannot eliminate • λ at this stage yet. We are here treating • λ as a shorthand for a function of the symplectic space which we have yet to determine and not as an independent variable. For notational consistency, define u 1 = • λ from now on. The above Hamiltonian with the p λ term is the "naive Hamiltonian". Note that since, on-shell, the constraint must be satisfied, one cannot distinguish, on-shell, between the naive Hamiltonian and the above Hamiltonian with the undetermined coefficient, • λ = u 1.