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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 4563 | . 2 ⊢ (𝐴 ∈ 𝒫 𝐵 → 𝐴 ⊆ 𝐵) | |
| 2 | ssexg 5270 | . . . 4 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ V) | |
| 3 | elpwg 4559 | . . . . 5 ⊢ (𝐴 ∈ V → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) | |
| 4 | 3 | biimparc 479 | . . . 4 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐴 ∈ V) → 𝐴 ∈ 𝒫 𝐵) |
| 5 | 2, 4 | syldan 592 | . . 3 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ 𝒫 𝐵) |
| 6 | 5 | expcom 413 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 ⊆ 𝐵 → 𝐴 ∈ 𝒫 𝐵)) |
| 7 | 1, 6 | impbid2 226 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∈ wcel 2114 Vcvv 3442 ⊆ wss 3903 𝒫 cpw 4556 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5243 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-3an 1089 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rab 3402 df-v 3444 df-in 3910 df-ss 3920 df-pw 4558 |
| This theorem is referenced by: elpw2 5281 rabelpw 5283 difelpw 5301 pw2f1olem 9021 fineqvlem 9178 elfir 9330 r1sscl 9709 tskwe 9874 dfac8alem 9951 acni2 9968 fin1ai 10215 fin2i 10217 fin23lem7 10238 fin23lem11 10239 isfin2-2 10241 fin23lem39 10272 isf34lem1 10294 isf34lem2 10295 isf34lem4 10299 isf34lem5 10300 fin1a2lem12 10333 canthnumlem 10571 tsken 10677 tskss 10681 gruss 10719 ismre 17521 mreintcl 17526 mremre 17535 submre 17536 mrcval 17545 mrccl 17546 mrcun 17557 ismri 17566 acsfiel 17589 isacs1i 17592 catcoppccl 18053 acsdrsel 18478 acsdrscl 18481 acsficl 18482 pmtrval 19392 pmtrrn 19398 istopg 22851 uniopn 22853 iscld 22983 ntrval 22992 clsval 22993 discld 23045 mretopd 23048 neival 23058 isnei 23059 lpval 23095 restdis 23134 ordtbaslem 23144 ordtuni 23146 cndis 23247 tgcmp 23357 hauscmplem 23362 comppfsc 23488 elkgen 23492 xkoopn 23545 elqtop 23653 kqffn 23681 isfbas 23785 filss 23809 snfbas 23822 elfg 23827 ufilss 23861 fixufil 23878 cfinufil 23884 ufinffr 23885 ufilen 23886 fin1aufil 23888 flimclslem 23940 hauspwpwf1 23943 supnfcls 23976 flimfnfcls 23984 ptcmplem1 24008 tsmsfbas 24084 blfvalps 24339 blfps 24362 blf 24363 bcthlem5 25296 minveclem3b 25396 sigaclcuni 34295 sigaclcu2 34297 pwsiga 34307 erdsze2lem2 35417 cvmsval 35479 cvmsss2 35487 neibastop2lem 36573 tailf 36588 pibt2 37661 fin2so 37847 sdclem1 37983 elrfirn 43041 elrfirn2 43042 istopclsd 43046 nacsfix 43058 dnnumch1 43390 inpw 49173 |
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