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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 3992 | . 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 1438 Vcvv 2619 ⊆ wss 2999 𝒫 cpw 3429 |
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 665 ax-5 1381 ax-7 1382 ax-gen 1383 ax-ie1 1427 ax-ie2 1428 ax-8 1440 ax-10 1441 ax-11 1442 ax-i12 1443 ax-bndl 1444 ax-4 1445 ax-17 1464 ax-i9 1468 ax-ial 1472 ax-i5r 1473 ax-ext 2070 ax-sep 3957 |
This theorem depends on definitions: df-bi 115 df-tru 1292 df-nf 1395 df-sb 1693 df-clab 2075 df-cleq 2081 df-clel 2084 df-nfc 2217 df-v 2621 df-in 3005 df-ss 3012 df-pw 3431 |
This theorem is referenced by: axpweq 4006 genpelxp 7068 ltexprlempr 7165 recexprlempr 7189 cauappcvgprlemcl 7210 cauappcvgprlemladd 7215 caucvgprlemcl 7233 caucvgprprlemcl 7261 uzf 9020 ixxf 9314 fzf 9426 cncfval 11583 |
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