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Mirrors > Home > MPE Home > Th. List > elpw2g | Structured version Visualization version GIF version |
Description: Membership in a power class. Theorem 86 of [Suppes] p. 47. (Contributed by NM, 7-Aug-2000.) |
Ref | Expression |
---|---|
elpw2g | ⊢ (𝐵 ∈ 𝑉 → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elpwi 4117 | . 2 ⊢ (𝐴 ∈ 𝒫 𝐵 → 𝐴 ⊆ 𝐵) | |
2 | ssexg 4732 | . . . 4 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ V) | |
3 | elpwg 4116 | . . . . 5 ⊢ (𝐴 ∈ V → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) | |
4 | 3 | biimparc 503 | . . . 4 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐴 ∈ V) → 𝐴 ∈ 𝒫 𝐵) |
5 | 2, 4 | syldan 486 | . . 3 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ 𝒫 𝐵) |
6 | 5 | expcom 450 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 ⊆ 𝐵 → 𝐴 ∈ 𝒫 𝐵)) |
7 | 1, 6 | impbid2 215 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∈ wcel 1977 Vcvv 3173 ⊆ wss 3540 𝒫 cpw 4108 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-v 3175 df-in 3547 df-ss 3554 df-pw 4110 |
This theorem is referenced by: elpw2 4755 pwnss 4756 knatar 6507 pw2f1olem 7949 fineqvlem 8059 elfir 8204 marypha1 8223 r1sscl 8531 tskwe 8659 dfac8alem 8735 acni2 8752 fin1ai 8998 fin2i 9000 fin23lem7 9021 fin23lem11 9022 isfin2-2 9024 fin23lem39 9055 isf34lem1 9077 isf34lem2 9078 isf34lem4 9082 isf34lem5 9083 fin1a2lem12 9116 canthnumlem 9349 canthp1lem2 9354 wunss 9413 tsken 9455 tskss 9459 gruss 9497 ramub1lem1 15568 ismre 16073 mreintcl 16078 mremre 16087 submre 16088 mrcval 16093 mrccl 16094 mrcun 16105 ismri 16114 mreexd 16125 mreexexlem4d 16130 acsfiel 16138 isacs1i 16141 catcoppccl 16581 acsdrsel 16990 acsdrscl 16993 acsficl 16994 pmtrval 17694 pmtrrn 17700 opsrval 19295 istopg 20525 uniopn 20527 iscld 20641 ntrval 20650 clsval 20651 discld 20703 mretopd 20706 neival 20716 isnei 20717 lpval 20753 restdis 20792 ordtbaslem 20802 ordtuni 20804 cncls 20888 cndis 20905 tgcmp 21014 hauscmplem 21019 comppfsc 21145 elkgen 21149 xkoopn 21202 elqtop 21310 kqffn 21338 isfbas 21443 filss 21467 snfbas 21480 elfg 21485 fbasrn 21498 ufilss 21519 fixufil 21536 cfinufil 21542 ufinffr 21543 ufilen 21544 fin1aufil 21546 rnelfmlem 21566 flimclslem 21598 hauspwpwf1 21601 supnfcls 21634 flimfnfcls 21642 ptcmplem1 21666 tsmsfbas 21741 blfvalps 21998 blfps 22021 blf 22022 bcthlem5 22933 minveclem3b 23007 sigaclcuni 29508 sigaclcu2 29510 pwsiga 29520 erdsze2lem2 30440 cvmsval 30502 cvmsss2 30510 neibastop2lem 31525 tailf 31540 fin2so 32566 sdclem1 32709 elrfirn 36276 elrfirn2 36277 istopclsd 36281 nacsfix 36293 dnnumch1 36632 elpwi2 38291 |
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