Lehrer, Ehud; Samet, Dov - EconWPA - 2003
Aumann(1976) has shown that agents who have a common prior cannot have common knowledge of their posteriors for event E … it is common knowledge that the posteriors for E *do* coincide? A necessary and sufficient condition for this is the … existence of a nonempty *finite* event F with the following two properties. First, it is common knowledge at $F$ that the agents …