A Truth Table is a way of determining the value of a Propositional formula for all possible values for the variables in the formula.

In this slide we introduce the Truth Tree Method which is a technique proving that a conclusion formula $C$ in Propositional Logic is a logical consequence of a set ...

where ---> and <---> are meant to be the traditional arrows denoting logical implication and logical equivalence. If you don't know propositional calculus, we'll say just a few things to help ease ...

ABSTRACT: In the XII Latin American Symposium on Mathematical Logic we presented a work introducing a Hilbert-style propositional calculus called four-valued Monteiro propositional calculus. This ...

The classical propositional calculus (zero-order logic, classical propositional logic), is the most fundamental two-valued logical system. In this paper we present a proof of inconsistency of the ...

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 ...

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 ...

Charles S. Peirce; Logic; Many-valued logics; Paraconsistency; Three-valued logic Our focus here will be mainly on the formal aspects of the subject. This article aims to provide a new approach to ...