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Mirrors > Home > MPE Home > Th. List > nesymir | Structured version Visualization version GIF version |
Description: Inference associated with nesym 2991. (Contributed by BJ, 7-Jul-2018.) (Proof shortened by Wolf Lammen, 25-Nov-2019.) |
Ref | Expression |
---|---|
nesymir.1 | ⊢ ¬ 𝐴 = 𝐵 |
Ref | Expression |
---|---|
nesymir | ⊢ 𝐵 ≠ 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nesymir.1 | . . 3 ⊢ ¬ 𝐴 = 𝐵 | |
2 | 1 | neir 2937 | . 2 ⊢ 𝐴 ≠ 𝐵 |
3 | 2 | necomi 2989 | 1 ⊢ 𝐵 ≠ 𝐴 |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 = wceq 1533 ≠ wne 2934 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-9 2108 ax-ext 2697 |
This theorem depends on definitions: df-bi 206 df-an 396 df-ex 1774 df-cleq 2718 df-ne 2935 |
This theorem is referenced by: relowlpssretop 36751 |
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