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| Mirrors > Home > ILE Home > Th. List > sneqd | GIF version | ||
| Description: Equality deduction for singletons. (Contributed by NM, 22-Jan-2004.) |
| Ref | Expression |
|---|---|
| sneqd.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| sneqd | ⊢ (𝜑 → {𝐴} = {𝐵}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sneqd.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | sneq 3705 | . 2 ⊢ (𝐴 = 𝐵 → {𝐴} = {𝐵}) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → {𝐴} = {𝐵}) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 {csn 3694 |
| 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-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-sn 3700 |
| This theorem is referenced by: dmsnsnsng 5245 cnvsng 5253 ressn 5308 f1osng 5662 fsng 5855 fsn2g 5857 funopsn 5865 fnressn 5875 fvsng 5885 2nd1st 6387 dfmpo 6432 cnvf1olem 6433 suppsnopdc 6463 tpostpos 6508 tfrlemi1 6576 tfr1onlemaccex 6592 tfrcllemaccex 6605 elixpsn 6983 ixpsnf1o 6984 en1bg 7053 mapsnend 7065 mapsnen 7066 xpassen 7094 fztp 10434 fzsuc2 10435 fseq1p1m1 10450 fseq1m1p1 10451 zfz1isolemsplit 11235 zfz1isolem1 11237 s1val 11330 s1eq 11332 s1prc 11336 fsumm1 12127 fprodm1 12309 divalgmod 12638 ennnfonelemg 13238 ennnfonelemp1 13241 ennnfonelem1 13242 ennnfonelemnn0 13257 setsvalg 13326 strsetsid 13329 imasex 13569 imasival 13570 imasaddvallemg 13579 mulgval 13875 isunitd 14351 lspsnneg 14694 lspsnsub 14695 lmodindp1 14702 lidl0 14763 rsp0 14767 ridl0 14784 zrhrhmb 14896 znval 14910 psrval 14940 txdis 15268 upgr1een 16245 1loopgruspgr 16424 wkslem1 16441 wkslem2 16442 iswlk 16444 loopclwwlkn1b 16540 clwwlkn1loopb 16541 eupth2lem3lem3fi 16591 |
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