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 ...

Studia Logica: An International Journal for Symbolic Logic, Vol. 60, No. 1, Natural Deduction (Jan., 1998), pp. 161-208 (48 pages) We present and discuss various formalizations of Modal Logics in ...

The unification problem in a normal modal logic is to determine, given a formula φ, whether there exists a substitution σ such that σ(φ) is in that logic. In that case, σ is a unifier of φ. We shall ...

15:00 - 15:15 Katsuhiko Sano and Sakiko Yamasaki: Subformula property and Craig interpolation theorem of sequent calculi for tense logics Valentin Shehtman and Dmitry Shkatov: Some prospects for ...

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 ...

Dominic Gregory joined the Department in September 2004, after spending three years as a Research Fellow at Jesus College, Cambridge. He did his postgraduate work at Trinity College, Cambridge, and he ...

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 ...