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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 2232 |
. 2
| |
| 2 | eqriv.1 |
. 2
| |
| 3 | 1, 2 | mpgbir 1506 |
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-gen 1502 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is used by: eqid 2238 sb8ab 2362 cbvabw 2363 cbvab 2364 vjust 2822 nfccdeq 3049 csbcow 3158 difeqri 3349 uneqri 3371 incom 3421 ineqri 3424 difin 3468 invdif 3473 indif 3474 difundi 3483 indifdir 3487 rabsnif 3778 pwv 3934 uniun 3954 intun 4001 intpr 4002 iuncom 4018 iuncom4 4019 iun0 4069 0iun 4070 iunin2 4076 iunun 4091 iunxun 4092 iunxiun 4094 iinpw 4103 inuni 4291 unidif0 4304 unipw 4357 snnex 4594 unon 4658 xpiundi 4833 xpiundir 4834 0xp 4855 iunxpf 4928 cnvuni 4966 dmiun 4990 dmuni 4991 epini 5158 rniun 5198 cnvresima 5277 imaco 5293 rnco 5294 dfmpt3 5506 imaiun 5966 opabex3d 6350 opabex3 6351 ecid 6872 qsid 6874 mapval2 6959 ixpin 7005 dfz2 9722 infssuzex 10677 dfrp2 10709 1nprm 12911 infpn2 13399 cntrval 14145 mgpplusg 14306 mgpbas 14309 ringidval 14349 rrgval 14654 2idlval 14923 cnfldui 15008 zrhval 15036 asclfval 15105 plyun0 15928 edgval 16467 clwwlkn0 16815 clwwlknonmpo 16835 clwwlknon 16836 clwwlk0on0 16838 |
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