| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: Define inequality. |
| Ref | Expression |
|---|---|
| df-ne |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cA |
. . 3
| |
| 2 | cB |
. . 3
| |
| 3 | 1, 2 | wne 2017 |
. 2
|
| 4 | 1, 2 | wceq 1298 |
. . 3
|
| 5 | 4 | wn 2 |
. 2
|
| 6 | 3, 5 | wb 163 |
1
|