Concept · Foundations

Instantiation

A proof move that goes from a quantified claim to a claim about a specific individual; universal instantiation picks any individual, while existential instantiation introduces a fresh name for a witness.

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Why it matters

Instantiation is how quantified premises become usable in step-by-step derivations.

Where this shows up

Units and lessons using this concept

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Units (1)

Predicate Logic: Quantifiers, Predicates, and Formal StructureStudents move beyond sentence-level structure to analyze internal form with predicates, variables, and quantifiers. They learn to transla…

Lessons (1)

Quantifier Rules in ProofPredicate Logic: Quantifiers, Predicates, and Formal Structure

Other concepts in Foundations

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