Existential Variable in Predicate Logic
An existential variable is a placeholder in predicate logic, bound by an…
Existential Quantifier
The existential quantifier (∃) in predicate logic asserts that at least one…
Existential Introduction
A rule of inference in logic that allows the introduction of an…
Existential Instantiation: Inferring Existence from Generic Statements
Existential instantiation is a logical rule enabling the inference of a specific…
Existential Import in Logic
Existential import refers to the assumption that a statement implies the existence…
Existential Generalization
Existential generalization is a rule of inference that permits concluding that something…
Existence Predicate
An existence predicate, often found in free logics, is a logical construct…
Ex Falso Quodlibet: The Principle of Explosion
Ex falso quodlibet, or the principle of explosion, is a logical tenet…
Exclusive Disjunction (XOR)
Exclusive disjunction, or XOR, is a logical operation that yields true only…
Exclusion Negation in Three-Valued Logic
Exclusion negation in three-valued logic strictly denies the truth of a proposition.…