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| Mirrors > Home > ILE Home > Th. List > eqriv | Unicode version | ||
| Description: Infer equality of classes from equivalence of membership. (Contributed by NM, 5-Aug-1993.) |
| Ref | Expression |
|---|---|
| eqriv.1 |
|
| Ref | Expression |
|---|---|
| eqriv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfcleq 2226 |
. 2
| |
| 2 | eqriv.1 |
. 2
| |
| 3 | 1, 2 | mpgbir 1502 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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-gen 1498 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-cleq 2225 |
| This theorem is referenced by: eqid 2232 sb8ab 2356 cbvabw 2357 cbvab 2358 vjust 2814 nfccdeq 3040 csbcow 3149 difeqri 3339 uneqri 3361 incom 3411 ineqri 3414 difin 3458 invdif 3463 indif 3464 difundi 3473 indifdir 3477 rabsnif 3758 pwv 3913 uniun 3933 intun 3980 intpr 3981 iuncom 3997 iuncom4 3998 iun0 4048 0iun 4049 iunin2 4055 iunun 4070 iunxun 4071 iunxiun 4073 iinpw 4082 inuni 4267 unidif0 4280 unipw 4333 snnex 4569 unon 4633 xpiundi 4808 xpiundir 4809 0xp 4830 iunxpf 4903 cnvuni 4941 dmiun 4965 dmuni 4966 epini 5133 rniun 5173 cnvresima 5252 imaco 5268 rnco 5269 dfmpt3 5481 imaiun 5933 opabex3d 6314 opabex3 6315 ecid 6832 qsid 6834 mapval2 6912 ixpin 6958 dfz2 9650 infssuzex 10593 dfrp2 10623 1nprm 12811 infpn2 13207 rrgval 14407 2idlval 14650 cnfldui 14737 zrhval 14765 plyun0 15601 edgval 16055 clwwlkn0 16403 clwwlknonmpo 16423 clwwlknon 16424 clwwlk0on0 16426 |
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