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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 2963 | . 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 2202 {crab 2515 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-rab 2520 df-v 2805 |
| This theorem is referenced by: unimax 3932 undifexmid 4289 frind 4455 ordtriexmidlem2 4624 ordtriexmid 4625 ontriexmidim 4626 ordtri2orexmid 4627 onsucelsucexmid 4634 0elsucexmid 4669 ordpwsucexmid 4674 ordtri2or2exmid 4675 ontri2orexmidim 4676 canth 5979 acexmidlema 6019 acexmidlemb 6020 isnumi 7429 genpelvl 7775 genpelvu 7776 cauappcvgprlemladdru 7919 cauappcvgprlem1 7922 caucvgprlem1 7942 sup3exmid 9179 supinfneg 9873 infsupneg 9874 supminfex 9875 ublbneg 9891 negm 9893 infssuzex 10539 hashinfuni 11085 gcddvds 12597 dvdslegcd 12598 bezoutlemsup 12643 uzwodc 12671 lcmval 12698 dvdslcm 12704 isprm2lem 12751 eupth2lem3lem3fi 16394 eupth2lem3lem6fi 16395 eupth2lem3lem4fi 16397 |
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