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| Mirrors > Home > ILE Home > Th. List > eqrdv | GIF version | ||
| Description: Deduce equality of classes from equivalence of membership. (Contributed by NM, 17-Mar-1996.) |
| Ref | Expression |
|---|---|
| eqrdv.1 | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) |
| Ref | Expression |
|---|---|
| eqrdv | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqrdv.1 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) | |
| 2 | 1 | alrimiv 1927 | . 2 ⊢ (𝜑 → ∀𝑥(𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) |
| 3 | dfcleq 2232 | . 2 ⊢ (𝐴 = 𝐵 ↔ ∀𝑥(𝑥 ∈ 𝐴 ↔ 𝑥 ∈ 𝐵)) | |
| 4 | 2, 3 | sylibr 134 | 1 ⊢ (𝜑 → 𝐴 = 𝐵) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 105 ∀wal 1400 = wceq 1402 ∈ wcel 2209 |
| 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-gen 1502 ax-17 1579 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is used by: eqrdav 2237 abbi 2357 eqabdv 2369 csbcomg 3170 csbabg 3209 uneq1 3376 ineq1 3425 difin2 3493 difsn 3852 intmin4 3998 iunconstm 4020 iinconstm 4021 dfiun2g 4044 iindif2m 4080 iinin2m 4081 iunxsng 4088 iunxsngf 4090 iunpw 4626 opthprc 4826 inimasn 5205 dmsnopg 5259 dfco2a 5288 iotaeq 5346 fun11iun 5660 relndmfv 5728 ssimaex 5764 unpreima 5833 respreima 5836 fconstfvm 5933 reldm 6420 suppimacnvfn 6486 suppcofn 6506 rntpos 6528 frecsuclem 6677 iserd 6833 erth 6853 ecidg 6873 mapdm0 6937 mapfset 6945 map0e 6967 ixpiinm 7006 pw2f1odclem 7134 fifo 7314 ordiso2 7376 ctssdccl 7452 ctssdc 7454 finacn 7561 pw1if 7585 exmidapne 7627 acnccim 7639 genpassl 7892 genpassu 7893 1idprl 7958 1idpru 7959 sup3exmid 9290 indval0 9300 eqreznegel 10024 iccid 10338 fzsplit2 10466 fzsplit3 10469 fzsn 10483 fzpr 10495 uzsplit 10510 fzoval 10566 infssuzex 10677 frec2uzrand 10857 bitsmod 12742 bitscmp 12744 divsfval 13702 mhmpropd 13826 eqgid 14082 ghmmhmb 14110 ghmpropd 14139 cntzval 14147 resscntz 14160 ablnsg 14222 opprsubgg 14474 opprunitd 14501 unitpropdg 14539 opprsubrngg 14603 subsubrng2 14607 subrngpropd 14608 subsubrg2 14638 subrgpropd 14645 rhmpropd 14646 ringunitsap0 14678 drnguiap 14693 lssats2 14835 lsspropdg 14852 discld 15328 restsn 15372 restdis 15376 cndis 15433 cnpdis 15434 tx1cn 15461 tx2cn 15462 blpnf 15592 blininf 15616 blres 15626 xmetec 15629 metrest 15698 xmetxpbl 15700 cnbl0 15726 reopnap 15738 bl2ioo 15742 cncfmet 15784 limcdifap 15854 gausslemma2dlem1a 16343 ushgredgedg 16633 ushgredgedgloop 16635 clwwlknun 16848 eupth2lemsfi 16885 |
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