Certainty independence and the separation of utility and beliefs

The study conducted presents that for a general class of preferences, a separation of a key component of tastes, the utility function, from the other components of the representation is possible only if the decision maker's preference satisfy a mild but not completely innocuous conditions, called 'certainty independence'. The study outlines the axiomatic characterization of the preferences that obtain such separation, which are a subset of the biseperable preferences.