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Syntax Definition wnnf 36724
Description: Syntax for the nonfreeness quantifier.
Hypotheses
Ref Expression
wph wff 𝜑
vx setvar 𝑥
Assertion
Ref Expression
wnnf wff Ⅎ'𝑥𝜑
See definition df-bj-nnf 36725 for more information.
Colors of variables: wff setvar class
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