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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 3658. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| velpw | ⊢ (𝑥 ∈ 𝒫 𝐴 ↔ 𝑥 ⊆ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 2805 | . 2 ⊢ 𝑥 ∈ V | |
| 2 | 1 | elpw 3658 | 1 ⊢ (𝑥 ∈ 𝒫 𝐴 ↔ 𝑥 ⊆ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∈ wcel 2202 ⊆ wss 3200 𝒫 cpw 3652 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-v 2804 df-in 3206 df-ss 3213 df-pw 3654 |
| This theorem is referenced by: ordpwsucss 4665 fabexg 5524 abexssex 6286 qsss 6762 mapval2 6846 pmsspw 6851 uniixp 6889 exmidpw 7099 exmidpweq 7100 pw1fin 7101 pw1dc0el 7102 fival 7168 npsspw 7690 restsspw 13331 subsubrng2 14228 subsubrg2 14259 lssintclm 14397 istopon 14736 isbasis2g 14768 tgval2 14774 unitg 14785 distop 14808 cldss2 14829 ntreq0 14855 discld 14859 neisspw 14871 restdis 14907 cnntr 14948 |
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