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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 2309 | . 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 1331 ≠ wne 2308 |
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 2309 |
This theorem is referenced by: neneq 2330 necon2bi 2363 necon2i 2364 pm2.21ddne 2391 nelrdva 2891 neq0r 3377 0inp0 4090 pwntru 4122 nndceq0 4531 frecabcl 6296 frecsuclem 6303 nnsucsssuc 6388 phpm 6759 diffisn 6787 en2eqpr 6801 fival 6858 omp1eomlem 6979 difinfsnlem 6984 difinfsn 6985 ctmlemr 6993 fodjuomnilemdc 7016 indpi 7150 nqnq0pi 7246 ltxrlt 7830 sup3exmid 8715 elnnz 9064 xrnemnf 9564 xrnepnf 9565 xrlttri3 9583 nltpnft 9597 ngtmnft 9600 xrpnfdc 9625 xrmnfdc 9626 xleaddadd 9670 fzprval 9862 fxnn0nninf 10211 iseqf1olemklt 10258 seq3f1olemqsumkj 10271 expnnval 10296 xrmaxrecl 11024 fsumcl2lem 11167 dvdsle 11542 mod2eq1n2dvds 11576 nndvdslegcd 11654 gcdnncl 11656 divgcdnn 11663 sqgcd 11717 eucalgf 11736 eucalginv 11737 lcmeq0 11752 lcmgcdlem 11758 qredeu 11778 rpdvds 11780 cncongr2 11785 divnumden 11874 divdenle 11875 phibndlem 11892 ennnfonelemk 11913 ennnfonelemjn 11915 ennnfonelemp1 11919 ennnfonelemim 11937 isxmet2d 12517 dvexp2 12845 nnsf 13199 peano4nninf 13200 exmidsbthrlem 13217 refeq 13223 trilpolemeq1 13233 |
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