Author/Authors :
Dvure?enskij، نويسنده , , Anatolij and Lahti، نويسنده , , Pekka and Pulmannov?، نويسنده , , Sylvia and Ylinen، نويسنده , , Kari، نويسنده ,
Abstract :
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.
