Propositional Calculus(redirected from Truth-functional propositional logic)
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propositional calculus[‚präp·ə′zish·ən·əl ′kal·kyə·ləs]
a branch of mathematical logic in which the formal axiomatic method is used to study complex (compound) propositions, which are put together from simple (elementary, unanalyzable) propositions with the help of the logical connectives “and,” “or,” “if… then,” and “not.” Moreover, the goal is set of determining propositional forms of general significance in one sense or another, that is, those formulas that upon any substitution of propositions in place of the variables give propositions that are true in the appropriate sense.
a branch of mathematical logic that studies the logical forms of compound propositions formed from simpler propositions by means of such connectives as “and”; “or”; “if …, then …”; and “not” (negation).