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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 4216 | . 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 2178 Vcvv 2776 ⊆ wss 3174 𝒫 cpw 3626 |
| 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 2189 ax-sep 4178 |
| This theorem depends on definitions: df-bi 117 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-v 2778 df-in 3180 df-ss 3187 df-pw 3628 |
| This theorem is referenced by: elpwi2 4218 axpweq 4231 genpelxp 7659 ltexprlempr 7756 recexprlempr 7780 cauappcvgprlemcl 7801 cauappcvgprlemladd 7806 caucvgprlemcl 7824 caucvgprprlemcl 7852 uzf 9686 ixxf 10055 fzf 10169 cncfval 15159 reldvg 15266 dvfvalap 15268 plyval 15319 |
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