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, a field ...

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 ...

Do you suffer from anxiety in your everyday life? This blog shows how a form of logic known as alethic modal logic can be used with logic-based therapy (LBT) to construct the emotional reasoning that ...

There are two different modal logics: the logic T assuming contingency and the logic K = assuming logical determinism. In the paper, I show that the Aristotelian treatise On Interpretation (Περί ...

Kit Fine (Philos Perspect 8:1–16, 1994) famously objected against the idea that essence can be successfully analyzed in terms of de re necessity. In response, Iwant to explore a novel, interesting, ...

Alethic modal logic studies reasoning by using modalities of truth such as possibility, impossibility, and necessity. Because the premises and conclusions of the chains of emotional reasoning involved ...