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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 3716 | . 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 1402 {csn 3705 |
| 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 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-sn 3711 |
| This theorem is referenced by: dmsnsnsng 5260 cnvsng 5268 ressn 5323 f1osng 5677 fsng 5872 fsn2g 5874 funopsn 5882 fnressn 5892 fvsng 5902 2nd1st 6404 dfmpo 6449 cnvf1olem 6450 suppsnopdc 6480 tpostpos 6525 tfrlemi1 6593 tfr1onlemaccex 6609 tfrcllemaccex 6622 elixpsn 7007 ixpsnf1o 7008 en1bg 7077 mapsnend 7089 mapsnen 7090 xpassen 7118 fztp 10463 fzsuc2 10464 fseq1p1m1 10479 fseq1m1p1 10480 zfz1isolemsplit 11268 zfz1isolem1 11270 s1val 11363 s1eq 11365 s1prc 11369 fsumm1 12161 fprodm1 12343 divalgmod 12672 ennnfonelemg 13272 ennnfonelemp1 13275 ennnfonelem1 13276 ennnfonelemnn0 13291 setsvalg 13360 strsetsid 13363 imasex 13603 imasival 13604 imasaddvallemg 13613 mulgval 13902 isunitd 14386 lspsnneg 14729 lspsnsub 14730 lmodindp1 14737 lidl0 14798 rsp0 14802 ridl0 14819 zrhrhmb 14929 znval 14943 psrval 14973 txdis 15301 upgr1een 16279 1loopgruspgr 16458 wkslem1 16475 wkslem2 16476 iswlk 16478 loopclwwlkn1b 16574 clwwlkn1loopb 16575 eupth2lem3lem3fi 16625 |
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