Description: 1 and 0 are distinct. Axiom 13 of 22 for real and complex numbers, justified by Theorem ax1ne0 . (Contributed by NM, 29-Jan-1995)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | ax-1ne0 | |- 1 =/= 0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 0 | c1 | |- 1 |
|
| 1 | cc0 | |- 0 |
|
| 2 | 0 1 | wne | |- 1 =/= 0 |