“The paper derives a third-order linear differential equation for the partition function, a key result.”

“The consistent orderings are in one-to-one correspondence with the Jacobians associated with all field redefinitions of a set of canonical degrees of freedom. For each admissible operator ordering--or equivalently, each path-integral measure--we identify a definite, positive Hilbert-space inner product. All such prescriptions define the same quantum theory, in the sense that they lead to identical physical observables.”

“The article focuses on Bohmian quantum cosmology within the framework of the Wheeler-DeWitt equation.”