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Mirrors > Home > ILE Home > Th. List > wnfc | GIF version |
Description: Extend wff definition to include the not-free predicate for classes. |
Ref | Expression |
---|---|
vx | setvar x |
cA | class A |
Ref | Expression |
---|---|
wnfc | wff ℲxA |
Colors of variables: wff set class |
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