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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 4190 | . 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 2167 Vcvv 2763 ⊆ wss 3157 𝒫 cpw 3606 |
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 ax-sep 4152 |
| This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-v 2765 df-in 3163 df-ss 3170 df-pw 3608 |
| This theorem is referenced by: elpwi2 4192 axpweq 4205 genpelxp 7595 ltexprlempr 7692 recexprlempr 7716 cauappcvgprlemcl 7737 cauappcvgprlemladd 7742 caucvgprlemcl 7760 caucvgprprlemcl 7788 uzf 9621 ixxf 9990 fzf 10104 cncfval 14892 reldvg 14999 dvfvalap 15001 plyval 15052 |
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