Herbrand's theorem

E238234

Herbrand's theorem is a fundamental result in mathematical logic and proof theory that characterizes the validity of first-order formulas via finite sets of ground instances, forming a basis for automated theorem proving.

All labels observed (6)

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Statements (45)

Predicate Object
instanceOf mathematical theorem
result in mathematical logic
result in proof theory
appliesTo Skolemized formulas
prenex form formulas
assumes classical first-order logic
characterizes validity of first-order formulas
concerns first-order logic
first-order predicate calculus
concernsProperty satisfiability of first-order formulas
unsatisfiability of sets of clauses
field automated theorem proving
mathematical logic
proof theory
formalizes connection between models and ground instances
hasConsequence existence of Herbrand disjunctions
reduction of first-order entailment to propositional entailment over ground instances
hasVersion Herbrand's theorem for unsatisfiability
linked to: Herbrand's theorem

Herbrand's theorem for validity
linked to: Herbrand's theorem
historicalPeriod 20th century
implies existence of finite set of ground instances for valid formulas
influenced development of Prolog
development of automated deduction
development of logic programming
introducedBy Jacques Herbrand
isAbout elimination of quantifiers via ground instances
reduction of first-order reasoning to propositional reasoning
namedAfter Jacques Herbrand
provides basis for automated theorem proving
foundation for resolution methods
foundation for sequent calculi for first-order logic
foundation for tableau methods
relatedTo Gödel's completeness theorem
Skolemization
compactness theorem
resolution principle
semantic tableaux
relates first-order validity to propositional validity
usedIn automated theorem provers
model checking of first-order properties
proof search procedures
usesConcept Herbrand base
Herbrand universe
ground instance
ground term

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Referenced by (11)

Full triples — surface form annotated when it differs from this entity's canonical label.

Jacques Herbrand knownFor Herbrand's theorem
Jacques Herbrand theoremNamedAfter Herbrand's theorem
Herbrand's theorem hasVersion Herbrand's theorem for unsatisfiability
linked to: Herbrand's theorem
Herbrand's theorem hasVersion Herbrand's theorem for validity
linked to: Herbrand's theorem
Herbrand universe appearsIn Herbrand’s theorem
linked to: Herbrand's theorem
Herbrand expansion relatedTo Herbrand theorem
linked to: Herbrand's theorem
Herbrand disjunction isCentralTo Herbrand's theorem
Herbrand disjunction occursIn Herbrand-style proof calculi
linked to: Herbrand's theorem
Davis–Putnam algorithm relatedConcept Herbrand’s theorem
linked to: Herbrand's theorem
Herbrand interpretation roleIn Herbrand’s theorem
linked to: Herbrand's theorem