| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > cop | Structured version Visualization version GIF version | ||
| Description: Extend class notation to include ordered pair. |
| Ref | Expression |
|---|---|
| cA | class 𝐴 |
| cB | class 𝐵 |
| Ref | Expression |
|---|---|
| cop | class 〈𝐴, 𝐵〉 |
| Colors of variables: wff setvar class |
| Copyright terms: Public domain | W3C validator |