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| Mirrors > Home > ILE Home > Th. List > sneqd | Unicode version | ||
| Description: Equality deduction for singletons. (Contributed by NM, 22-Jan-2004.) |
| Ref | Expression |
|---|---|
| sneqd.1 |
|
| Ref | Expression |
|---|---|
| sneqd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sneqd.1 |
. 2
| |
| 2 | sneq 3720 |
. 2
| |
| 3 | 1, 2 | syl 14 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on 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 proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-sn 3715 |
| This theorem is used by: dmsnsnsng 5265 cnvsng 5273 ressn 5328 f1osng 5682 fsng 5881 fsn2g 5883 funopsn 5891 fnressn 5901 fvsng 5911 2nd1st 6414 dfmpo 6459 cnvf1olem 6460 suppsnopdc 6490 tpostpos 6535 tfrlemi1 6603 tfr1onlemaccex 6619 tfrcllemaccex 6632 elixpsn 7017 ixpsnf1o 7018 en1bg 7087 mapsnend 7099 mapsnen 7100 xpassen 7128 fztp 10487 fzsuc2 10488 fseq1p1m1 10503 fseq1m1p1 10504 zfz1isolemsplit 11292 zfz1isolem1 11294 s1val 11387 s1eq 11389 s1prc 11393 fsumm1 12185 fprodm1 12367 divalgmod 12696 ennnfonelemg 13296 ennnfonelemp1 13299 ennnfonelem1 13300 ennnfonelemnn0 13315 setsvalg 13384 strsetsid 13387 imasex 13628 imasival 13629 imasaddvallemg 13638 mulgval 13927 isunitd 14415 lspsnneg 14759 lspsnsub 14760 lmodindp1 14767 lidl0 14828 rsp0 14832 ridl0 14849 zrhrhmb 14959 znval 14973 psrval 15052 txdis 15380 upgr1een 16377 1loopgruspgr 16556 wkslem1 16573 wkslem2 16574 iswlk 16576 loopclwwlkn1b 16672 clwwlkn1loopb 16673 eupth2lem3lem3fi 16723 wexmiddifxylem 17057 |
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