Definition of existential quantifier in English:
A formal expression used in asserting that something exists of which a stated general proposition can be said to be true.
- By contraposition and the definition of the existential quantifier, the latter axiom is equivalent to x = x y (y = x).
- The epsilon calculus is, in its most basic form, an extension of first-order predicate logic with an ‘epsilon operation’ that picks out, for any true existential formula, a witness to the existential quantifier.
- In each case, the proposition expressed is argued to be that which would be expressed if the indefinite determiner were replaced by the existential quantifier.
Definition of existential quantifier in:
- British & World English dictionary
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