We present a dynamic epistemic logic for knowledge change of rational agents. Existing approaches only deal with partial public announcements, that means an announcement may lead to an inconsistent state. We introduce an extension of the multi-modal logic  S5   n  featuring total public announcements where an update cannot result in an inconsistency. We also study total public announcements in the context of common knowledge and relativized common knowledge.
['David Steiner', 'Thomas Studer']
Total Public Announcements