| Metamath Proof Explorer |
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Related theorems GIF version |
| Description: Extend class notation to include the intersection of two classes (read: "A intersect B"). |
| Ref | Expression |
|---|---|
| cA | class A |
| cB | class B |
| Ref | Expression |
|---|---|
| cin | class (A ∩ B) |
| Colors of variables: wff set class |