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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 |
| Syntax hints: → wi 4 ↔ wb 105 ∀wal 1400 = wceq 1402 ∈ wcel 2209 |
| 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-5 1500 ax-gen 1502 ax-17 1579 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-cleq 2231 |
| This theorem is referenced by: eqrdav 2237 abbi 2357 eqabdv 2369 csbcomg 3170 csbabg 3209 uneq1 3376 ineq1 3425 difin2 3493 difsn 3850 intmin4 3996 iunconstm 4018 iinconstm 4019 dfiun2g 4042 iindif2m 4078 iinin2m 4079 iunxsng 4086 iunxsngf 4088 iunpw 4624 opthprc 4824 inimasn 5203 dmsnopg 5257 dfco2a 5286 iotaeq 5344 fun11iun 5658 ssimaex 5761 unpreima 5827 respreima 5830 fconstfvm 5927 reldm 6413 suppimacnvfn 6479 suppcofn 6499 rntpos 6521 frecsuclem 6670 iserd 6826 erth 6846 ecidg 6866 mapdm0 6930 mapfset 6938 map0e 6960 ixpiinm 6999 pw2f1odclem 7127 fifo 7307 ordiso2 7368 ctssdccl 7444 ctssdc 7446 finacn 7553 pw1if 7577 exmidapne 7619 acnccim 7631 genpassl 7884 genpassu 7885 1idprl 7950 1idpru 7951 sup3exmid 9280 eqreznegel 9996 iccid 10309 fzsplit2 10436 fzsplit3 10439 fzsn 10453 fzpr 10465 uzsplit 10480 fzoval 10536 infssuzex 10647 frec2uzrand 10823 bitsmod 12704 bitscmp 12706 divsfval 13629 mhmpropd 13753 eqgid 14009 ghmmhmb 14037 ghmpropd 14066 ablnsg 14118 opprsubgg 14366 opprunitd 14393 unitpropdg 14431 opprsubrngg 14495 subsubrng2 14499 subrngpropd 14500 subsubrg2 14530 subrgpropd 14537 rhmpropd 14538 ringunitsap0 14570 drnguiap 14585 lssats2 14726 lsspropdg 14743 discld 15163 restsn 15207 restdis 15211 cndis 15268 cnpdis 15269 tx1cn 15296 tx2cn 15297 blpnf 15427 blininf 15451 blres 15461 xmetec 15464 metrest 15533 xmetxpbl 15535 cnbl0 15561 reopnap 15573 bl2ioo 15577 cncfmet 15619 limcdifap 15689 gausslemma2dlem1a 16094 ushgredgedg 16384 ushgredgedgloop 16386 clwwlknun 16599 eupth2lemsfi 16636 |
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