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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 7375 ctssdccl 7451 ctssdc 7453 finacn 7560 pw1if 7584 exmidapne 7626 acnccim 7638 genpassl 7891 genpassu 7892 1idprl 7957 1idpru 7958 sup3exmid 9287 indval0 9297 eqreznegel 10014 iccid 10327 fzsplit2 10455 fzsplit3 10458 fzsn 10472 fzpr 10484 uzsplit 10499 fzoval 10555 infssuzex 10666 frec2uzrand 10842 bitsmod 12723 bitscmp 12725 divsfval 13649 mhmpropd 13773 eqgid 14029 ghmmhmb 14057 ghmpropd 14086 ablnsg 14138 opprsubgg 14390 opprunitd 14417 unitpropdg 14455 opprsubrngg 14519 subsubrng2 14523 subrngpropd 14524 subsubrg2 14554 subrgpropd 14561 rhmpropd 14562 ringunitsap0 14594 drnguiap 14609 lssats2 14751 lsspropdg 14768 discld 15237 restsn 15281 restdis 15285 cndis 15342 cnpdis 15343 tx1cn 15370 tx2cn 15371 blpnf 15501 blininf 15525 blres 15535 xmetec 15538 metrest 15607 xmetxpbl 15609 cnbl0 15635 reopnap 15647 bl2ioo 15651 cncfmet 15693 limcdifap 15763 gausslemma2dlem1a 16177 ushgredgedg 16467 ushgredgedgloop 16469 clwwlknun 16682 eupth2lemsfi 16719 |
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