Examlex
The two main approaches to measuring GDP are the
Quantifier Negation
The process of applying negation to a statement that contains a quantifier, altering its scope and possibly changing the quantifier type (for example, from universal to existential).
Existential Generalization
A logical operation that infers the existence of at least one object in a domain that satisfies a given proposition.
Existential Instantiation
A logical rule that deduces the existence of at least one instance of a predicate from a general statement.
Symbolize
The act of representing objects, actions, or ideas through symbols or a system of notation.
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