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existential quantifier
(redirected from Existential quantification)

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existential quantifier
n
(Philosophy / Logic) Logic a formal device, for which the conventional symbol is ∃, which indicates that the open sentence that follows is true of at least one member of the relevant universe of interpretation, as (∃x) Fx meaning ``something is (an) F,'' ``something Fs,'' or ``there are (some) Fs.''
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Noun1.existential quantifier - a logical quantifier of a proposition that asserts the existence of at least one thing for which the proposition is true
logical quantifier, quantifier - (logic) a word (such as `some' or `all' or `no') that binds the variables in a logical proposition


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This is due to the fact that universal quantification is abundant in our natural language use, but expressing it in SQL requires the negation of existential quantification, which can be quite unintuitive.
 
 
 
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