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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 3680 | . 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 1397 {csn 3669 |
| 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 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-11 1554 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-sn 3675 |
| This theorem is referenced by: dmsnsnsng 5214 cnvsng 5222 ressn 5277 f1osng 5626 fsng 5820 fsn2g 5822 funopsn 5830 fnressn 5840 fvsng 5850 2nd1st 6343 dfmpo 6388 cnvf1olem 6389 tpostpos 6430 tfrlemi1 6498 tfr1onlemaccex 6514 tfrcllemaccex 6527 elixpsn 6904 ixpsnf1o 6905 en1bg 6974 mapsnen 6986 xpassen 7014 fztp 10313 fzsuc2 10314 fseq1p1m1 10329 fseq1m1p1 10330 zfz1isolemsplit 11103 zfz1isolem1 11105 s1val 11198 s1eq 11200 s1prc 11204 fsumm1 11995 fprodm1 12177 divalgmod 12506 ennnfonelemg 13042 ennnfonelemp1 13045 ennnfonelem1 13046 ennnfonelemnn0 13061 setsvalg 13130 strsetsid 13133 imasex 13406 imasival 13407 imasaddvallemg 13416 mulgval 13727 isunitd 14139 lspsnneg 14453 lspsnsub 14454 lmodindp1 14461 lidl0 14522 rsp0 14526 ridl0 14543 zrhrhmb 14655 znval 14669 psrval 14699 txdis 15020 upgr1een 15994 1loopgruspgr 16173 wkslem1 16190 wkslem2 16191 iswlk 16193 loopclwwlkn1b 16289 clwwlkn1loopb 16290 eupth2lem3lem3fi 16340 |
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