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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 3662. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| velpw | ⊢ (𝑥 ∈ 𝒫 𝐴 ↔ 𝑥 ⊆ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 2806 | . 2 ⊢ 𝑥 ∈ V | |
| 2 | 1 | elpw 3662 | 1 ⊢ (𝑥 ∈ 𝒫 𝐴 ↔ 𝑥 ⊆ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∈ wcel 2202 ⊆ wss 3201 𝒫 cpw 3656 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-v 2805 df-in 3207 df-ss 3214 df-pw 3658 |
| This theorem is referenced by: ordpwsucss 4671 fabexg 5532 abexssex 6296 qsss 6806 mapval2 6890 pmsspw 6895 uniixp 6933 exmidpw 7143 exmidpweq 7144 pw1fin 7145 pw1dc0el 7146 fival 7212 npsspw 7734 restsspw 13395 subsubrng2 14293 subsubrg2 14324 lssintclm 14463 istopon 14807 isbasis2g 14839 tgval2 14845 unitg 14856 distop 14879 cldss2 14900 ntreq0 14926 discld 14930 neisspw 14942 restdis 14978 cnntr 15019 exmidnotnotr 16710 |
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