S4 Modal Logic System
S4 is a modal logic system defined by reflexivity and transitivity axioms…
Non-Alethic Modal Logic
A branch of modal logic exploring modes of truth beyond necessity and…
Multi-Modal Logic
Multi-modal logic extends classical modal logic by integrating multiple distinct types of…
Modal Operators in Logic
Modal operators like necessity (◻) and possibility (◊) alter a statement's truth…
Logic of Questions and Answers (Erotetic Logic)
Erotetic logic, also known as the logic of questions and answers, formalizes…
Knower’s Paradox
A paradox in epistemic logic concerning self-reference, where a statement claims its…
Fitch Paradox
The Fitch paradox, a puzzle in epistemic logic, challenges our understanding of…
Epistemic Modal Logic
A specialized field of modal logic focusing on formalizing reasoning about knowledge…