The propositional calculus is a branch of logic. It is also called propositional logic, statement logic, … 展开

Although propositional logic (also called propositional calculus) had been hinted by earlier philosophers, it was developed into a formal logic (Stoic logic) by Chrysippus in the 3rd century BC and expanded by his successor … 展开

Propositional logic, as currently studied in universities, is a specification of a standard of logical consequence in which only the meanings of propositional connectives are considered in evaluating the conditions for the truth of a sen… 展开

An argument is defined as a pair of things, namely a set of sentences, called the premises, and a sentence, called the conclusion. The conclusion is claimed to follow from the premises, and the premises are claimed to s… 展开

Propositional logic is typically studied through a formal system in which formulas of a formal language are interpreted to represent propositions. This formal language is the basis for proof systems, which allow a conclusion to be … 展开

The language (commonly called ) of a propositional calculus is defined in terms of:
1. a set of primitive symbols, called atomic formulas, atomic sentences, atoms, placeholders, prime formulas, proposition letters, sentenc… 展开