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| Mirrors > Home > MPE Home > Th. List > 1ne2 | Structured version Visualization version GIF version | ||
| Description: 1 is not equal to 2. (Contributed by NM, 19-Oct-2012.) |
| Ref | Expression |
|---|---|
| 1ne2 | ⊢ 1 ≠ 2 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1re 11261 | . 2 ⊢ 1 ∈ ℝ | |
| 2 | 1lt2 12437 | . 2 ⊢ 1 < 2 | |
| 3 | 1, 2 | ltneii 11374 | 1 ⊢ 1 ≠ 2 |
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