The Journal of Symbolic Logic (JSL) was founded in 1936 and it has become the leading research journal in the field. It is issued quarterly. Volume 71, being published during 2006, will consist of ...

The Modal Predicate Calculus gives rise to issues surrounding the Barcan formulas, their converses, and necessary existence. I examine these issues by means of the Quantified Argument Calculus (Quarc) ...

The study of monadic algebraic structures in combination with fuzzy logic offers a robust framework for modelling and analysing uncertainty and graded truth. These frameworks extend classical ...