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 ...

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 ...

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 ...

God is by definition a perfect being. It is more perfect to exist than to not exist. Therefore, God exists. Just given these simple ideas, a few axioms, and a fondness for pushing around abstract ...

This is a preview. Log in through your library . Abstract Modal logics have proven to be a very successful tool for reasoning about games. However, until now, although logics have been put forward for ...

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 ...

In 1959, a paper appeared in The Journal of Symbolic Logic, with the unimpressive-sounding title “A Completeness Theorem in Modal Logic.” A completeness theorem is a guarantee that every universal ...

A simple, bivalent semantics is defined for Łukasiewicz's 4-valued modal logic Łm4. It is shown that according to this semantics, the essential presupposition underlying Łm4 is the following: A is a ...

Papers on related subjects will also be considered. (1) Full papers for publication in the proceedings and presentation at the conference. (2) Short presentations intended for presentation at the ...