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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 3684 | . 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 3673 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-sn 3679 |
| This theorem is referenced by: dmsnsnsng 5221 cnvsng 5229 ressn 5284 f1osng 5635 fsng 5828 fsn2g 5830 funopsn 5838 fnressn 5848 fvsng 5858 2nd1st 6352 dfmpo 6397 cnvf1olem 6398 suppsnopdc 6428 tpostpos 6473 tfrlemi1 6541 tfr1onlemaccex 6557 tfrcllemaccex 6570 elixpsn 6947 ixpsnf1o 6948 en1bg 7017 mapsnen 7029 xpassen 7057 fztp 10358 fzsuc2 10359 fseq1p1m1 10374 fseq1m1p1 10375 zfz1isolemsplit 11148 zfz1isolem1 11150 s1val 11243 s1eq 11245 s1prc 11249 fsumm1 12040 fprodm1 12222 divalgmod 12551 ennnfonelemg 13087 ennnfonelemp1 13090 ennnfonelem1 13091 ennnfonelemnn0 13106 setsvalg 13175 strsetsid 13178 imasex 13451 imasival 13452 imasaddvallemg 13461 mulgval 13772 isunitd 14184 lspsnneg 14499 lspsnsub 14500 lmodindp1 14507 lidl0 14568 rsp0 14572 ridl0 14589 zrhrhmb 14701 znval 14715 psrval 14745 txdis 15071 upgr1een 16048 1loopgruspgr 16227 wkslem1 16244 wkslem2 16245 iswlk 16247 loopclwwlkn1b 16343 clwwlkn1loopb 16344 eupth2lem3lem3fi 16394 |
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