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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 10496 fzsuc2 10497 fseq1p1m1 10512 fseq1m1p1 10513 zfz1isolemsplit 11305 zfz1isolem1 11307 s1val 11400 s1eq 11402 s1prc 11406 fsumm1 12201 fprodm1 12383 divalgmod 12712 ennnfonelemg 13345 ennnfonelemp1 13348 ennnfonelem1 13349 ennnfonelemnn0 13364 setsvalg 13433 strsetsid 13436 imasex 13677 imasival 13678 imasaddvallemg 13687 mulgval 13976 isunitd 14464 lspsnneg 14808 lspsnsub 14809 lmodindp1 14816 lidl0 14877 rsp0 14881 ridl0 14898 zrhrhmb 15008 znval 15022 psrval 15101 txdis 15430 upgr1een 16487 1loopgruspgr 16666 wkslem1 16683 wkslem2 16684 iswlk 16686 loopclwwlkn1b 16782 clwwlkn1loopb 16783 eupth2lem3lem3fi 16833 wexmiddifxylem 17167 |
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