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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 2504 | . 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 2420 |
| 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 623 ax-in2 624 ax-5 1500 ax-gen 1502 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-cleq 2231 df-ne 2421 |
| This theorem is referenced by: ifnefals 3685 difsnb 3856 0nelop 4386 frecabcl 6664 fidifsnen 7166 tpfidisj 7230 omp1eomlem 7428 difinfsnlem 7433 fodjuomnilemdc 7478 en2eleq 7541 en2other2 7542 netap 7614 2omotaplemap 7617 ltned 8433 lt0ne0 8750 zdceq 9703 zneo 9730 xrlttri3 10182 qdceq 10662 flqltnz 10705 seqf1oglem1 10939 nn0opthd 11143 hashdifpr 11244 hashtpgim 11280 cats1un 11476 sumtp 12164 nninfctlemfo 12800 isprm2lem 12877 oddprm 13021 pcmpt 13105 ennnfonelemex 13288 perfectlem2 16097 lgsneg 16126 lgseisenlem4 16175 lgsquadlem1 16179 lgsquadlem3 16181 lgsquad2 16185 2lgsoddprm 16215 funvtxval0d 16257 umgrvad2edg 16435 1hegrvtxdg1rfi 16534 vdegp1bid 16539 umgr2cwwk2dif 16648 eupth2lem3lem4fi 16697 pw1ndom3lem 17002 pw1ndom3 17003 |
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