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Related theorems GIF version |
| Description: Extend the definition of a wff to include the isomorphism property. (Read: H is an R, S isomorphism of A onto B.) |
| Ref | Expression |
|---|---|
| cA | class A |
| cB | class B |
| cR | class R |
| cS | class S |
| cH | class H |
| Ref | Expression |
|---|---|
| wiso | wff H Isom R, S (A, B) |
| Colors of variables: wff set class |