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Notes on coarse grainings and functions of observables
2005
Reports on mathematical physics
Using the Naimark dilation theory we investigate the question under what conditions an observable which is a coarse graining of another observable is a function of it. To this end, conditions for the separability and for the Boolean structure of an observable are given.
doi:10.1016/s0034-4877(05)80030-8
fatcat:io65xzigjncn3lfewauobb4che