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| Mirrors > Home > ILE Home > Th. List > elpwi | GIF version | ||
| Description: Subset relation implied by membership in a power class. (Contributed by NM, 17-Feb-2007.) |
| Ref | Expression |
|---|---|
| elpwi | ⊢ (𝐴 ∈ 𝒫 𝐵 → 𝐴 ⊆ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elpwg 3696 | . 2 ⊢ (𝐴 ∈ 𝒫 𝐵 → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) | |
| 2 | 1 | ibi 176 | 1 ⊢ (𝐴 ∈ 𝒫 𝐵 → 𝐴 ⊆ 𝐵) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ⊆ wss 3220 𝒫 cpw 3688 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-in 3226 df-ss 3233 df-pw 3690 |
| This theorem is used by: elpwid 3700 elelpwi 3701 elpw2g 4294 eldifpw 4625 iunpw 4628 f1opw2 6299 pw1dc1 7225 fi0 7314 2omap 7324 2omapfi 7326 pw1m 7589 pw1on 7591 indval0 9306 hashfibclem 11304 lspf 14835 cnntr 15451 edgssv2en 16645 pw1map 17230 |
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