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| Mirrors > Home > ILE Home > Th. List > elrab3 | GIF version | ||
| Description: Membership in a restricted class abstraction, using implicit substitution. (Contributed by NM, 5-Oct-2006.) |
| Ref | Expression |
|---|---|
| elrab.1 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
| Ref | Expression |
|---|---|
| elrab3 | ⊢ (𝐴 ∈ 𝐵 → (𝐴 ∈ {𝑥 ∈ 𝐵 ∣ 𝜑} ↔ 𝜓)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elrab.1 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 2 | 1 | elrab 2976 | . 2 ⊢ (𝐴 ∈ {𝑥 ∈ 𝐵 ∣ 𝜑} ↔ (𝐴 ∈ 𝐵 ∧ 𝜓)) |
| 3 | 2 | baib 927 | 1 ⊢ (𝐴 ∈ 𝐵 → (𝐴 ∈ {𝑥 ∈ 𝐵 ∣ 𝜑} ↔ 𝜓)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1398 ∈ wcel 2205 {crab 2526 |
| 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-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-rab 2531 df-v 2817 |
| This theorem is referenced by: unimax 3953 undifexmid 4311 frind 4478 ordtriexmidlem2 4647 ordtriexmid 4648 ontriexmidim 4649 ordtri2orexmid 4650 onsucelsucexmid 4657 0elsucexmid 4692 ordpwsucexmid 4697 ordtri2or2exmid 4698 ontri2orexmidim 4699 canth 6009 acexmidlema 6049 acexmidlemb 6050 isnumi 7491 genpelvl 7843 genpelvu 7844 cauappcvgprlemladdru 7987 cauappcvgprlem1 7990 caucvgprlem1 8010 sup3exmid 9248 supinfneg 9945 infsupneg 9946 supminfex 9947 ublbneg 9963 negm 9965 infssuzex 10615 hashinfuni 11165 gcddvds 12684 dvdslegcd 12685 bezoutlemsup 12730 uzwodc 12758 lcmval 12785 dvdslcm 12791 isprm2lem 12838 eupth2lem3lem3fi 16591 eupth2lem3lem6fi 16592 eupth2lem3lem4fi 16594 |
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