A guide to completeness and complexity for modal logics of knowledge and belief
Artificial Intelligence
Reasoning about knowledge
Modal description logics: modalizing roles
Fundamenta Informaticae
Epistemic Logic for AI and Computer Science
Epistemic Logic for AI and Computer Science
On the model theory of knowledge
On the model theory of knowledge
A Complete Quantified Epistemic Logic for Reasoning about Message Passing Systems
Computational Logic in Multi-Agent Systems
WoLLIC '09 Proceedings of the 16th International Workshop on Logic, Language, Information and Computation
Fundamenta Informaticae - Logic, Language, Information and Computation
Journal of Artificial Intelligence Research
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We consider the monodic formulas of common knowledge predicate logic, which allow applications of epistemic operators to formulas with at most one free variable. We provide finite axiomatizations of the monodic fragment of the most important common knowledge predicate logics (the full logics are known to be not recursively enumerable) and single out a number of their decidable fragments. On the other hand, it is proved that the addition of the equality symbol to the monodic fragment makes it not recursively enumerable.