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Related theorems GIF version |
| Description: Extend class notation to include operations. Note that the syntax is simply three class symbols in a row surrounded by parentheses. |
| Ref | Expression |
|---|---|
| cA | class A |
| cB | class B |
| cF | class F |
| Ref | Expression |
|---|---|
| co | class (AFB) |
| Colors of variables: wff set class |