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| Mirrors > Home > ILE Home > Th. List > necomd | GIF version | ||
| Description: Deduction from commutative law for inequality. (Contributed by NM, 12-Feb-2008.) |
| Ref | Expression |
|---|---|
| necomd.1 | ⊢ (𝜑 → 𝐴 ≠ 𝐵) |
| Ref | Expression |
|---|---|
| necomd | ⊢ (𝜑 → 𝐵 ≠ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | necomd.1 | . 2 ⊢ (𝜑 → 𝐴 ≠ 𝐵) | |
| 2 | necom 2498 | . 2 ⊢ (𝐴 ≠ 𝐵 ↔ 𝐵 ≠ 𝐴) | |
| 3 | 1, 2 | sylib 122 | 1 ⊢ (𝜑 → 𝐵 ≠ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ≠ wne 2414 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-5 1496 ax-gen 1498 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-cleq 2227 df-ne 2415 |
| This theorem is referenced by: ifnefals 3671 difsnb 3842 0nelop 4369 frecabcl 6643 fidifsnen 7138 tpfidisj 7202 omp1eomlem 7398 difinfsnlem 7403 fodjuomnilemdc 7448 en2eleq 7511 en2other2 7512 netap 7584 2omotaplemap 7587 ltned 8403 lt0ne0 8720 zdceq 9673 zneo 9700 xrlttri3 10152 qdceq 10631 flqltnz 10674 seqf1oglem1 10908 nn0opthd 11112 hashdifpr 11213 hashtpgim 11245 cats1un 11441 sumtp 12128 nninfctlemfo 12764 isprm2lem 12841 oddprm 12985 pcmpt 13069 ennnfonelemex 13252 perfectlem2 15997 lgsneg 16026 lgseisenlem4 16075 lgsquadlem1 16079 lgsquadlem3 16081 lgsquad2 16085 2lgsoddprm 16115 funvtxval0d 16157 umgrvad2edg 16335 1hegrvtxdg1rfi 16434 vdegp1bid 16439 umgr2cwwk2dif 16548 eupth2lem3lem4fi 16597 pw1ndom3lem 16902 pw1ndom3 16903 |
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