| 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 3637 | . 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 2147 {cab 2741 Vcvv 3454 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 |
| This theorem is used by: elint 4916 opabidw 5502 opabid 5503 oprabidw 7474 oprabid 7475 soseq 8203 tfrlem3a 8412 fsetfcdm 8910 cardprclem 10087 iunfictbso 10220 aceq3lem 10226 dfac5lem4 10232 kmlem9 10264 domtriomlem 10547 ltexprlem3 11150 ltexprlem4 11151 reclem2pr 11160 reclem3pr 11161 supsrlem 11223 supaddc 12311 supadd 12312 supmul1 12313 supmullem1 12314 supmullem2 12315 supmul 12316 01sqrexlem6 15443 infcvgaux2i 16056 mertenslem1 16082 mertenslem2 16083 4sqlem12 17163 conjnmzb 19496 sylow3lem2 19872 mdetunilem9 22965 txuni2 23914 xkoopn 23938 met2ndci 24871 2sqlem8 27783 2sqlem11 27786 madef 28252 eulerpartlemt 35073 eulerpartlemr 35076 eulerpartlemn 35083 acwer1prclem 35851 onprcf1acwevdlem1 36045 subfacp1lem3 36114 subfacp1lem5 36116 dfttc4lem1 37494 dfttc4lem2 37495 rdgssun 38493 finxpsuclem 38512 heiborlem1 38937 heiborlem6 38942 heiborlem8 38944 cllem0 44759 brpermmodel 46188 fsetsnf 48326 fsetsnfo 48328 cfsetsnfsetf 48333 cfsetsnfsetf1 48334 cfsetsnfsetfo 48335 |
| Copyright terms: Public domain | W3C validator |