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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 2982 | . 2 ⊢ (𝐴 ∈ {𝑥 ∈ 𝐵 ∣ 𝜑} ↔ (𝐴 ∈ 𝐵 ∧ 𝜓)) |
| 3 | 2 | baib 931 | 1 ⊢ (𝐴 ∈ 𝐵 → (𝐴 ∈ {𝑥 ∈ 𝐵 ∣ 𝜑} ↔ 𝜓)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1402 ∈ wcel 2209 {crab 2532 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rab 2537 df-v 2823 |
| This theorem is referenced by: unimax 3964 undifexmid 4325 frind 4492 ordtriexmidlem2 4662 ordtriexmid 4663 ontriexmidim 4664 ordtri2orexmid 4665 onsucelsucexmid 4672 0elsucexmid 4707 ordpwsucexmid 4712 ordtri2or2exmid 4713 ontri2orexmidim 4714 canth 6026 acexmidlema 6066 acexmidlemb 6067 isnumi 7517 genpelvl 7869 genpelvu 7870 cauappcvgprlemladdru 8013 cauappcvgprlem1 8016 caucvgprlem1 8036 sup3exmid 9277 supinfneg 9974 infsupneg 9975 supminfex 9976 ublbneg 9992 negm 9994 infssuzex 10644 hashinfuni 11194 gcddvds 12718 dvdslegcd 12719 bezoutlemsup 12764 uzwodc 12792 lcmval 12819 dvdslcm 12825 isprm2lem 12872 eupth2lem3lem3fi 16625 eupth2lem3lem6fi 16626 eupth2lem3lem4fi 16628 |
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