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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 4508 | . 2 ⊢ (𝐴 ∈ 𝒫 𝐵 → 𝐴 ⊆ 𝐵) | |
2 | ssexg 5201 | . . . 4 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ V) | |
3 | elpwg 4502 | . . . . 5 ⊢ (𝐴 ∈ V → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) | |
4 | 3 | biimparc 483 | . . . 4 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐴 ∈ V) → 𝐴 ∈ 𝒫 𝐵) |
5 | 2, 4 | syldan 594 | . . 3 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ 𝒫 𝐵) |
6 | 5 | expcom 417 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 ⊆ 𝐵 → 𝐴 ∈ 𝒫 𝐵)) |
7 | 1, 6 | impbid2 229 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∈ wcel 2112 Vcvv 3398 ⊆ wss 3853 𝒫 cpw 4499 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-ext 2708 ax-sep 5177 |
This theorem depends on definitions: df-bi 210 df-an 400 df-tru 1546 df-ex 1788 df-sb 2073 df-clab 2715 df-cleq 2728 df-clel 2809 df-rab 3060 df-v 3400 df-in 3860 df-ss 3870 df-pw 4501 |
This theorem is referenced by: elpw2 5223 elpwi2OLD 5225 pwnss 5226 difelpw 5228 rabelpw 5229 pw2f1olem 8727 fineqvlem 8868 elfir 9009 r1sscl 9366 tskwe 9531 dfac8alem 9608 acni2 9625 fin1ai 9872 fin2i 9874 fin23lem7 9895 fin23lem11 9896 isfin2-2 9898 fin23lem39 9929 isf34lem1 9951 isf34lem2 9952 isf34lem4 9956 isf34lem5 9957 fin1a2lem12 9990 canthnumlem 10227 tsken 10333 tskss 10337 gruss 10375 ismre 17047 mreintcl 17052 mremre 17061 submre 17062 mrcval 17067 mrccl 17068 mrcun 17079 ismri 17088 acsfiel 17111 isacs1i 17114 catcoppccl 17577 catcoppcclOLD 17578 acsdrsel 18003 acsdrscl 18006 acsficl 18007 pmtrval 18797 pmtrrn 18803 istopg 21746 uniopn 21748 iscld 21878 ntrval 21887 clsval 21888 discld 21940 mretopd 21943 neival 21953 isnei 21954 lpval 21990 restdis 22029 ordtbaslem 22039 ordtuni 22041 cndis 22142 tgcmp 22252 hauscmplem 22257 comppfsc 22383 elkgen 22387 xkoopn 22440 elqtop 22548 kqffn 22576 isfbas 22680 filss 22704 snfbas 22717 elfg 22722 ufilss 22756 fixufil 22773 cfinufil 22779 ufinffr 22780 ufilen 22781 fin1aufil 22783 flimclslem 22835 hauspwpwf1 22838 supnfcls 22871 flimfnfcls 22879 ptcmplem1 22903 tsmsfbas 22979 blfvalps 23235 blfps 23258 blf 23259 bcthlem5 24179 minveclem3b 24279 sigaclcuni 31752 sigaclcu2 31754 pwsiga 31764 erdsze2lem2 32833 cvmsval 32895 cvmsss2 32903 neibastop2lem 34235 tailf 34250 pibt2 35274 fin2so 35450 sdclem1 35587 elrfirn 40161 elrfirn2 40162 istopclsd 40166 nacsfix 40178 dnnumch1 40513 inpw 45780 |
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