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more about quantifier
## quantifier |

2 definitions found From WordNet r 1.6 [wn]: quantifier n 1: a word (such as `some' or `all` or `no') that binds the variables in a logical proposition 2: a word that expresses a quantity (as `fifteen' or `many') From The Free On-line Dictionary of Computing (13 Mar 01) [foldoc]: quantifier An operator in mathematics and logic specifying for which values of a variable a formula is true. Universally quantified means "for all values" (written with an inverted A, {LaTeX} \forall) and existentially quantified means "there exists some value" (written with a reversed E, {LaTeX} \exists). To be unambiguous, the set to which the values of the variable belong should be specified, though this is often omitted when it is clear from the context. E.g. Forall x . P(x) <=> not (Exists x . not P(x)) meaning that any x (in some unspecified set) has property P which is equivalent to saying that there does not exist any x which does not have the property. If a variable is not quantified then it is a {free variable}. In {logic programming} this usually means that it is actually universally quantified. See also {first order logic}.

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