Syntactic foundations for unawareness of theorems
Spyros Galanis · 2009
We provide a complete and sound ax-iomatization of the set-theoretic model of Galanis [2007]. By constructing a syntax with several knowledge modalities, one for each sub-language, we are able to allow for agents to make mistakes about the knowledge of others without discarding the truth axiom. Comparing the present axiom system with that of Heifetz et al. [2008a] we find that neither is a generalization of the other.