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| Mirrors > Home > ILE Home > Th. List > velpw | GIF version | ||
| Description: Setvar variable membership in a power class (common case). See elpw 3655. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| velpw | ⊢ (𝑥 ∈ 𝒫 𝐴 ↔ 𝑥 ⊆ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 2802 | . 2 ⊢ 𝑥 ∈ V | |
| 2 | 1 | elpw 3655 | 1 ⊢ (𝑥 ∈ 𝒫 𝐴 ↔ 𝑥 ⊆ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∈ wcel 2200 ⊆ wss 3197 𝒫 cpw 3649 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 df-in 3203 df-ss 3210 df-pw 3651 |
| This theorem is referenced by: ordpwsucss 4659 fabexg 5515 abexssex 6276 qsss 6749 mapval2 6833 pmsspw 6838 uniixp 6876 exmidpw 7081 exmidpweq 7082 pw1fin 7083 pw1dc0el 7084 fival 7148 npsspw 7669 restsspw 13297 subsubrng2 14194 subsubrg2 14225 lssintclm 14363 istopon 14702 isbasis2g 14734 tgval2 14740 unitg 14751 distop 14774 cldss2 14795 ntreq0 14821 discld 14825 neisspw 14837 restdis 14873 cnntr 14914 |
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