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| Mirrors > Home > ILE Home > Th. List > elpw2 | GIF version | ||
| Description: Membership in a power class. Theorem 86 of [Suppes] p. 47. (Contributed by NM, 11-Oct-2007.) |
| Ref | Expression |
|---|---|
| elpw2.1 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| elpw2 | ⊢ (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elpw2.1 | . 2 ⊢ 𝐵 ∈ V | |
| 2 | elpw2g 4204 | . 2 ⊢ (𝐵 ∈ V → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∈ wcel 2177 Vcvv 2773 ⊆ wss 3167 𝒫 cpw 3617 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2188 ax-sep 4166 |
| This theorem depends on definitions: df-bi 117 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-v 2775 df-in 3173 df-ss 3180 df-pw 3619 |
| This theorem is referenced by: elpwi2 4206 axpweq 4219 genpelxp 7631 ltexprlempr 7728 recexprlempr 7752 cauappcvgprlemcl 7773 cauappcvgprlemladd 7778 caucvgprlemcl 7796 caucvgprprlemcl 7824 uzf 9658 ixxf 10027 fzf 10141 cncfval 15088 reldvg 15195 dvfvalap 15197 plyval 15248 |
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