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| Mirrors > Home > MPE Home > Th. List > elab2 | Structured version Visualization version GIF version | ||
| Description: Membership in a class abstraction, using implicit substitution. (Contributed by NM, 13-Sep-1995.) |
| Ref | Expression |
|---|---|
| elab2.1 | ⊢ 𝐴 ∈ V |
| elab2.2 | ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) |
| elab2.3 | ⊢ 𝐵 = {𝑥 ∣ 𝜑} |
| Ref | Expression |
|---|---|
| elab2 | ⊢ (𝐴 ∈ 𝐵 ↔ 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elab2.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | elab2.2 | . . 3 ⊢ (𝑥 = 𝐴 → (𝜑 ↔ 𝜓)) | |
| 3 | elab2.3 | . . 3 ⊢ 𝐵 = {𝑥 ∣ 𝜑} | |
| 4 | 2, 3 | elab2g 3633 | . 2 ⊢ (𝐴 ∈ V → (𝐴 ∈ 𝐵 ↔ 𝜓)) |
| 5 | 1, 4 | ax-mp 5 | 1 ⊢ (𝐴 ∈ 𝐵 ↔ 𝜓) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1569 ∈ wcel 2144 {cab 2738 Vcvv 3450 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 |
| This theorem is used by: elint 4912 opabidw 5497 opabid 5498 oprabidw 7451 oprabid 7452 soseq 8176 tfrlem3a 8385 fsetfcdm 8883 cardprclem 10061 iunfictbso 10194 aceq3lem 10200 dfac5lem4 10206 kmlem9 10238 domtriomlem 10521 ltexprlem3 11124 ltexprlem4 11125 reclem2pr 11134 reclem3pr 11135 supsrlem 11197 supaddc 12285 supadd 12286 supmul1 12287 supmullem1 12288 supmullem2 12289 supmul 12290 01sqrexlem6 15415 infcvgaux2i 16028 mertenslem1 16054 mertenslem2 16055 4sqlem12 17135 conjnmzb 19468 sylow3lem2 19843 mdetunilem9 22936 txuni2 23885 xkoopn 23909 met2ndci 24842 2sqlem8 27754 2sqlem11 27757 madef 28223 eulerpartlemt 35046 eulerpartlemr 35049 eulerpartlemn 35056 acwer1prclem 35808 onprcf1acwevdlem1 35957 subfacp1lem3 36016 subfacp1lem5 36018 dfttc4lem1 37391 dfttc4lem2 37392 rdgssun 38377 finxpsuclem 38396 heiborlem1 38821 heiborlem6 38826 heiborlem8 38828 cllem0 44643 brpermmodel 46069 fsetsnf 48197 fsetsnfo 48199 cfsetsnfsetf 48204 cfsetsnfsetf1 48205 cfsetsnfsetfo 48206 |
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