Studia Logica: An International Journal for Symbolic Logic, Vol. 43, No. 3 (1984), pp. 203-216 (14 pages) We propose a first order modal logic, the QS4E-logic, obtained by adding to the well-known ...

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 ...

The Journal of Philosophical Logic provides a forum for work at the crossroads of philosophy and logic, old and new, with contributions ranging from conceptual to technical. Accordingly, the Journal ...

Dynamic logic offers a formal framework to reason about actions, transitions and the evolution of systems over time. It extends classical modal logic by incorporating operators that capture state ...

Modal Logic, originally conceived as the logic of necessity and possibility, has developed into a powerful mathematical discipline that deals with (restricted) description languages for talking about ...

Graeme Forbes (DPhil, Oxford, 1980) works mainly in semantics, metaphysics, and logic. He has interests in compositionality, intensionality, modal metaphysics, and modal logic. His book Attitude ...

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 ...