## predicate calculus

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## predicate logic

<*logic*>

(Or "predicate calculus") An extension of propositional logic with separate symbols for predicates, subjects, and quantifiers.

For example, where propositional logic might assign a single symbol P to the proposition "All men are mortal", predicate logic can define the predicate M(x) which asserts that the subject, x, is mortal and bind x with the universal quantifier ("For all"):

All x . M(x)Higher-order predicate logic allows predicates to be the subjects of other predicates.

Last updated: 2002-05-21

### Nearby terms:

predecessor ♦ predicate calculus ♦ **predicate logic** ♦ predict ♦ predomain

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