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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 6287 qsss 6763 mapval2 6847 pmsspw 6852 uniixp 6890 exmidpw 7100 exmidpweq 7101 pw1fin 7102 pw1dc0el 7103 fival 7169 npsspw 7691 restsspw 13350 subsubrng2 14248 subsubrg2 14279 lssintclm 14417 istopon 14756 isbasis2g 14788 tgval2 14794 unitg 14805 distop 14828 cldss2 14849 ntreq0 14875 discld 14879 neisspw 14891 restdis 14927 cnntr 14968 |
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