Free Variable

An occurrence of a variable in a logic formula which is not inside the scope of a quantifier.

See also

Bound, Quantifier, Sentence

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Curry, H. B. Foundations of Mathematical Logic. New York: Dover, p. 112, 1977.

Referenced on Wolfram|Alpha

Free Variable

Cite this as:

Weisstein, Eric W. "Free Variable." From MathWorld--A Wolfram Web Resource.

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