Truth diagrams (TDs) are introduced as a novel graphical representation for propositional logic (PL). To demonstrate their epistemic efficacy a set of 28 concepts are proposed that any comprehensive ...

In this paper, we first formulate phase semantics for proof-terms of second-order intuitionistic propositional logic by modifying TaitGirard's saturated sets method. Next, we prove the completeness ...

Outline of topics Ever since modern symbolic logic was consolidated (in the mid 1900s), the standard format for an introductory logic class has been to learn the classical predicate calculus in three ...