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Mirrors > Home > ILE Home > Th. List > neneqd | GIF version |
Description: Deduction eliminating inequality definition. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) |
Ref | Expression |
---|---|
neneqd.1 | ⊢ (𝜑 → 𝐴 ≠ 𝐵) |
Ref | Expression |
---|---|
neneqd | ⊢ (𝜑 → ¬ 𝐴 = 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | neneqd.1 | . 2 ⊢ (𝜑 → 𝐴 ≠ 𝐵) | |
2 | df-ne 2310 | . 2 ⊢ (𝐴 ≠ 𝐵 ↔ ¬ 𝐴 = 𝐵) | |
3 | 1, 2 | sylib 121 | 1 ⊢ (𝜑 → ¬ 𝐴 = 𝐵) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 = wceq 1332 ≠ wne 2309 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 |
This theorem depends on definitions: df-bi 116 df-ne 2310 |
This theorem is referenced by: neneq 2331 necon2bi 2364 necon2i 2365 pm2.21ddne 2392 nelrdva 2895 neq0r 3382 0inp0 4098 pwntru 4130 nndceq0 4539 frecabcl 6304 frecsuclem 6311 nnsucsssuc 6396 phpm 6767 diffisn 6795 en2eqpr 6809 fival 6866 omp1eomlem 6987 difinfsnlem 6992 difinfsn 6993 ctmlemr 7001 fodjuomnilemdc 7024 indpi 7174 nqnq0pi 7270 ltxrlt 7854 sup3exmid 8739 elnnz 9088 xrnemnf 9594 xrnepnf 9595 xrlttri3 9613 nltpnft 9627 ngtmnft 9630 xrpnfdc 9655 xrmnfdc 9656 xleaddadd 9700 fzprval 9893 fxnn0nninf 10242 iseqf1olemklt 10289 seq3f1olemqsumkj 10302 expnnval 10327 xrmaxrecl 11056 fsumcl2lem 11199 dvdsle 11578 mod2eq1n2dvds 11612 nndvdslegcd 11690 gcdnncl 11692 divgcdnn 11699 sqgcd 11753 eucalgf 11772 eucalginv 11773 lcmeq0 11788 lcmgcdlem 11794 qredeu 11814 rpdvds 11816 cncongr2 11821 divnumden 11910 divdenle 11911 phibndlem 11928 ennnfonelemk 11949 ennnfonelemjn 11951 ennnfonelemp1 11955 ennnfonelemim 11973 isxmet2d 12556 dvexp2 12884 logbgcd1irraplemexp 13093 nnsf 13374 peano4nninf 13375 exmidsbthrlem 13392 refeq 13398 trilpolemeq1 13408 dceqnconst 13423 |
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