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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 3931 | . 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 103 ∈ wcel 1433 Vcvv 2601 ⊆ wss 2973 𝒫 cpw 3382 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-v 2603 df-in 2979 df-ss 2986 df-pw 3384 |
This theorem is referenced by: axpweq 3945 genpelxp 6701 ltexprlempr 6798 recexprlempr 6822 cauappcvgprlemcl 6843 cauappcvgprlemladd 6848 caucvgprlemcl 6866 caucvgprprlemcl 6894 uzf 8622 ixxf 8921 fzf 9033 |
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