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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 3700 | . 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 3689 |
| 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 2214 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-sn 3695 |
| This theorem is referenced by: dmsnsnsng 5240 cnvsng 5248 ressn 5303 f1osng 5657 fsng 5850 fsn2g 5852 funopsn 5860 fnressn 5870 fvsng 5880 2nd1st 6374 dfmpo 6419 cnvf1olem 6420 suppsnopdc 6450 tpostpos 6495 tfrlemi1 6563 tfr1onlemaccex 6579 tfrcllemaccex 6592 elixpsn 6970 ixpsnf1o 6971 en1bg 7040 mapsnend 7052 mapsnen 7053 xpassen 7081 fztp 10412 fzsuc2 10413 fseq1p1m1 10428 fseq1m1p1 10429 zfz1isolemsplit 11210 zfz1isolem1 11212 s1val 11305 s1eq 11307 s1prc 11311 fsumm1 12102 fprodm1 12284 divalgmod 12613 ennnfonelemg 13154 ennnfonelemp1 13157 ennnfonelem1 13158 ennnfonelemnn0 13173 setsvalg 13242 strsetsid 13245 imasex 13518 imasival 13519 imasaddvallemg 13528 mulgval 13839 isunitd 14251 lspsnneg 14568 lspsnsub 14569 lmodindp1 14576 lidl0 14637 rsp0 14641 ridl0 14658 zrhrhmb 14770 znval 14784 psrval 14814 txdis 15142 upgr1een 16119 1loopgruspgr 16298 wkslem1 16315 wkslem2 16316 iswlk 16318 loopclwwlkn1b 16414 clwwlkn1loopb 16415 eupth2lem3lem3fi 16465 |
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