| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 3634 | . 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 1570 ∈ wcel 2145 {cab 2739 Vcvv 3451 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 |
| This theorem is used by: elint 4913 opabidw 5498 opabid 5499 oprabidw 7451 oprabid 7452 soseq 8176 tfrlem3a 8384 fsetfcdm 8882 cardprclem 10060 iunfictbso 10193 aceq3lem 10199 dfac5lem4 10205 kmlem9 10237 domtriomlem 10520 ltexprlem3 11123 ltexprlem4 11124 reclem2pr 11133 reclem3pr 11134 supsrlem 11196 supaddc 12284 supadd 12285 supmul1 12286 supmullem1 12287 supmullem2 12288 supmul 12289 01sqrexlem6 15414 infcvgaux2i 16027 mertenslem1 16053 mertenslem2 16054 4sqlem12 17134 conjnmzb 19467 sylow3lem2 19842 mdetunilem9 22935 txuni2 23884 xkoopn 23908 met2ndci 24841 2sqlem8 27753 2sqlem11 27756 madef 28222 eulerpartlemt 35003 eulerpartlemr 35006 eulerpartlemn 35013 acwer1prclem 35759 onprcf1acwevdlem1 35895 subfacp1lem3 35947 subfacp1lem5 35949 dfttc4lem1 37316 dfttc4lem2 37317 rdgssun 38301 finxpsuclem 38320 heiborlem1 38745 heiborlem6 38750 heiborlem8 38752 cllem0 44566 brpermmodel 45992 fsetsnf 48120 fsetsnfo 48122 cfsetsnfsetf 48127 cfsetsnfsetf1 48128 cfsetsnfsetfo 48129 |
| Copyright terms: Public domain | W3C validator |