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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 3910 | . 2 ⊢ (𝐵 ∈ V → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) | |
3 | 1, 2 | ax-mp 7 | 1 ⊢ (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵) |
Colors of variables: wff set class |
Syntax hints: ↔ wb 98 ∈ wcel 1393 Vcvv 2557 ⊆ wss 2917 𝒫 cpw 3359 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 |
This theorem depends on definitions: df-bi 110 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-v 2559 df-in 2924 df-ss 2931 df-pw 3361 |
This theorem is referenced by: axpweq 3924 genpelxp 6609 ltexprlempr 6706 recexprlempr 6730 cauappcvgprlemcl 6751 cauappcvgprlemladd 6756 caucvgprlemcl 6774 caucvgprprlemcl 6802 uzf 8476 ixxf 8767 fzf 8878 |
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