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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 2973 | . 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 2203 {crab 2524 |
| 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 2214 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-rab 2529 df-v 2815 |
| This theorem is referenced by: unimax 3948 undifexmid 4306 frind 4473 ordtriexmidlem2 4642 ordtriexmid 4643 ontriexmidim 4644 ordtri2orexmid 4645 onsucelsucexmid 4652 0elsucexmid 4687 ordpwsucexmid 4692 ordtri2or2exmid 4693 ontri2orexmidim 4694 canth 6001 acexmidlema 6041 acexmidlemb 6042 isnumi 7478 genpelvl 7827 genpelvu 7828 cauappcvgprlemladdru 7971 cauappcvgprlem1 7974 caucvgprlem1 7994 sup3exmid 9231 supinfneg 9927 infsupneg 9928 supminfex 9929 ublbneg 9945 negm 9947 infssuzex 10593 hashinfuni 11140 gcddvds 12659 dvdslegcd 12660 bezoutlemsup 12705 uzwodc 12733 lcmval 12760 dvdslcm 12766 isprm2lem 12813 eupth2lem3lem3fi 16465 eupth2lem3lem6fi 16466 eupth2lem3lem4fi 16468 |
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