Wang, Yanjing and Seligman, Jeremy
Advances in Modal Logic Vol.12, College Publications: 611—628, 2018
Publication year: 2018

Abstract: In standard epistemic logic, agent names are usually assumed to be common knowledge implicitly. This is unreasonable for various applications. Inspired by term modal logic and assignment operators in dynamic logic, we introduce a lightweight modal predicate logic where names can be non-rigid. The language can handle various de dicto and de re distinctions in a natural way. The main technical result is a complete axiomatisation of this logic over S5 models.