A student in the modal logic interim course studies how subjunctives compare with conditional probabilities in probability theory. Tomis Kapitan, Presidential Teaching Professor in the philosophy ...

Modal logic, an extension of classical logic, investigates the modes of truth such as necessity and possibility. Its development has been closely intertwined with advances in proof theory, ...

Modal Reasoning: The study of logic that incorporates modalities—such as necessity, possibility, and knowledge—to characterise different states or conditions.

In 1958 Arnould Bayart, 1911-1998, produced a semantics for first and secondorder S5 modal logic, and in 1959 a completeness proof for first-order S5, and what he calls a 'quasi-completeness' proof ...

Tradition states that above the entrance to Plato’s Academy were inscribed the words, “Let no one ignorant of geometry enter here.” A student in the modal logic interim course studies how subjunctives ...