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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 4628 opthprc 4828 inimasn 5208 dmsnopg 5262 dfco2a 5291 iotaeq 5349 fun11iun 5663 relndmfv 5731 ssimaex 5767 unpreima 5836 respreima 5839 fconstfvm 5936 reldm 6424 suppimacnvfn 6490 suppcofn 6510 rntpos 6532 frecsuclem 6681 iserd 6837 erth 6857 ecidg 6877 mapdm0 6941 mapfset 6949 map0e 6971 ixpiinm 7010 pw2f1odclem 7138 fifo 7319 ordiso2 7381 ctssdccl 7457 ctssdc 7459 finacn 7566 pw1if 7590 exmidapne 7632 acnccim 7644 genpassl 7897 genpassu 7898 1idprl 7963 1idpru 7964 sup3exmid 9295 indval0 9306 eqreznegel 10030 iccid 10344 fzsplit2 10472 fzsplit3 10475 fzsn 10489 fzpr 10501 uzsplit 10516 fzoval 10572 infssuzex 10683 frec2uzrand 10863 bitsmod 12748 bitscmp 12750 divsfval 13708 mhmpropd 13832 eqgid 14088 ghmmhmb 14116 ghmpropd 14145 cntzval 14153 resscntz 14166 ablnsg 14228 idjusnfi 14270 gsum2d2fi 14274 opprsubgg 14499 opprunitd 14526 unitpropdg 14564 opprsubrngg 14628 subsubrng2 14632 subrngpropd 14633 subsubrg2 14663 subrgpropd 14670 rhmpropd 14671 ringunitsap0 14703 drnguiap 14718 lssats2 14860 lsspropdg 14877 discld 15362 restsn 15406 restdis 15410 cndis 15467 cnpdis 15468 tx1cn 15495 tx2cn 15496 blpnf 15626 blininf 15650 blres 15660 xmetec 15663 metrest 15732 xmetxpbl 15734 cnbl0 15760 reopnap 15772 bl2ioo 15776 cncfmet 15818 limcdifap 15888 gausslemma2dlem1a 16382 ushgredgedg 16672 ushgredgedgloop 16674 clwwlknun 16887 eupth2lemsfi 16924 |
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