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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 2962 | . 2 ⊢ (𝐴 ∈ {𝑥 ∈ 𝐵 ∣ 𝜑} ↔ (𝐴 ∈ 𝐵 ∧ 𝜓)) |
| 3 | 2 | baib 926 | 1 ⊢ (𝐴 ∈ 𝐵 → (𝐴 ∈ {𝑥 ∈ 𝐵 ∣ 𝜑} ↔ 𝜓)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1397 ∈ wcel 2202 {crab 2514 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-rab 2519 df-v 2804 |
| This theorem is referenced by: unimax 3927 undifexmid 4283 frind 4449 ordtriexmidlem2 4618 ordtriexmid 4619 ontriexmidim 4620 ordtri2orexmid 4621 onsucelsucexmid 4628 0elsucexmid 4663 ordpwsucexmid 4668 ordtri2or2exmid 4669 ontri2orexmidim 4670 canth 5969 acexmidlema 6009 acexmidlemb 6010 isnumi 7386 genpelvl 7732 genpelvu 7733 cauappcvgprlemladdru 7876 cauappcvgprlem1 7879 caucvgprlem1 7899 sup3exmid 9137 supinfneg 9829 infsupneg 9830 supminfex 9831 ublbneg 9847 negm 9849 infssuzex 10494 hashinfuni 11040 gcddvds 12539 dvdslegcd 12540 bezoutlemsup 12585 uzwodc 12613 lcmval 12640 dvdslcm 12646 isprm2lem 12693 eupth2lem3lem3fi 16327 eupth2lem3lem6fi 16328 eupth2lem3lem4fi 16330 |
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