We have seen that the language of propositional logic allows us to build up expressions from propositional variables A, B, C, \ldots using propositional connectives like \to, \wedge, \vee, and \neg.

A presentation is provided of a structural approach for the concur rent teaching of introductory propositional calculus and set theory. The existence of isomorphism is shown between each law (or ...

ABSTRACT: Based on the analysis of the properties of Γ-conclusion by means of deduction theorems, completeness theorems and the theory of truth degree of formulas, the present papers introduces the ...