Higher-Order Logic
Higher-order logic extends first-order logic by enabling quantification over predicates and other…
Existential Variable in Predicate Logic
An existential variable is a placeholder in predicate logic, bound by an…
Existential Instantiation: Inferring Existence from Generic Statements
Existential instantiation is a logical rule enabling the inference of a specific…
Existential Generalization
Existential generalization is a rule of inference that permits concluding that something…
Domain of Discourse: Defining the Scope of Logic
The domain of discourse is the set of all objects under consideration…