The thesis that, in a system of natural deduction, the meaning of a logical constant is given by some or all of its introduction and elimination rules has been developed recently in the work of ...

Catalog description: Introduction to deductive logic. Topics include: basic concepts of deductive logic; techniques of formal proof in propositional and predicate logic. 3 units. Prerequisites: No ...

Studia Logica: An International Journal for Symbolic Logic, Vol. 48, No. 4 (1989), pp. 449-459 (11 pages) We prove that the intuitionistic sentential calculus is Ł-decidable (decidable in the sense of ...

Logic is among the oldest and most foundational of the university disciplines. The goal is to equip students with most general possible framework for sound and rigorous reasoning — one that works ...