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Mirrors > Home > ILE Home > Th. List > necomi | GIF version |
Description: Inference from commutative law for inequality. (Contributed by NM, 17-Oct-2012.) |
Ref | Expression |
---|---|
necomi.1 | ⊢ 𝐴 ≠ 𝐵 |
Ref | Expression |
---|---|
necomi | ⊢ 𝐵 ≠ 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | necomi.1 | . 2 ⊢ 𝐴 ≠ 𝐵 | |
2 | necom 2392 | . 2 ⊢ (𝐴 ≠ 𝐵 ↔ 𝐵 ≠ 𝐴) | |
3 | 1, 2 | mpbi 144 | 1 ⊢ 𝐵 ≠ 𝐴 |
Colors of variables: wff set class |
Syntax hints: ≠ wne 2308 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-5 1423 ax-gen 1425 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-cleq 2132 df-ne 2309 |
This theorem is referenced by: 0nep0 4089 xp01disj 6330 xp01disjl 6331 djulclb 6940 djuinr 6948 pnfnemnf 7820 mnfnepnf 7821 ltneii 7860 1ne0 8788 0ne2 8925 fzprval 9862 0tonninf 10212 1tonninf 10213 |
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