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Mirrors > Home > MPE Home > Th. List > pwex | Structured version Visualization version GIF version |
Description: Power set axiom expressed in class notation. Axiom 4 of [TakeutiZaring] p. 17. (Contributed by NM, 21-Jun-1993.) (Proof shortened by Andrew Salmon, 25-Jul-2011.) |
Ref | Expression |
---|---|
zfpowcl.1 | ⊢ 𝐴 ∈ V |
Ref | Expression |
---|---|
pwex | ⊢ 𝒫 𝐴 ∈ V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zfpowcl.1 | . 2 ⊢ 𝐴 ∈ V | |
2 | pweq 4161 | . . 3 ⊢ (𝑧 = 𝐴 → 𝒫 𝑧 = 𝒫 𝐴) | |
3 | 2 | eleq1d 2686 | . 2 ⊢ (𝑧 = 𝐴 → (𝒫 𝑧 ∈ V ↔ 𝒫 𝐴 ∈ V)) |
4 | df-pw 4160 | . . 3 ⊢ 𝒫 𝑧 = {𝑦 ∣ 𝑦 ⊆ 𝑧} | |
5 | axpow2 4845 | . . . . . 6 ⊢ ∃𝑥∀𝑦(𝑦 ⊆ 𝑧 → 𝑦 ∈ 𝑥) | |
6 | 5 | bm1.3ii 4784 | . . . . 5 ⊢ ∃𝑥∀𝑦(𝑦 ∈ 𝑥 ↔ 𝑦 ⊆ 𝑧) |
7 | abeq2 2732 | . . . . . 6 ⊢ (𝑥 = {𝑦 ∣ 𝑦 ⊆ 𝑧} ↔ ∀𝑦(𝑦 ∈ 𝑥 ↔ 𝑦 ⊆ 𝑧)) | |
8 | 7 | exbii 1774 | . . . . 5 ⊢ (∃𝑥 𝑥 = {𝑦 ∣ 𝑦 ⊆ 𝑧} ↔ ∃𝑥∀𝑦(𝑦 ∈ 𝑥 ↔ 𝑦 ⊆ 𝑧)) |
9 | 6, 8 | mpbir 221 | . . . 4 ⊢ ∃𝑥 𝑥 = {𝑦 ∣ 𝑦 ⊆ 𝑧} |
10 | 9 | issetri 3210 | . . 3 ⊢ {𝑦 ∣ 𝑦 ⊆ 𝑧} ∈ V |
11 | 4, 10 | eqeltri 2697 | . 2 ⊢ 𝒫 𝑧 ∈ V |
12 | 1, 3, 11 | vtocl 3259 | 1 ⊢ 𝒫 𝐴 ∈ V |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 196 ∀wal 1481 = wceq 1483 ∃wex 1704 ∈ wcel 1990 {cab 2608 Vcvv 3200 ⊆ wss 3574 𝒫 cpw 4158 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-pow 4843 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-v 3202 df-in 3581 df-ss 3588 df-pw 4160 |
This theorem is referenced by: vpwex 4849 p0ex 4853 pp0ex 4855 ord3ex 4856 abexssex 7149 fnpm 7865 canth2 8113 dffi3 8337 r1sucg 8632 r1pwALT 8709 rankuni 8726 rankc2 8734 rankxpu 8739 rankmapu 8741 rankxplim 8742 r0weon 8835 aceq3lem 8943 dfac5lem4 8949 dfac2a 8952 dfac2 8953 ackbij2lem2 9062 ackbij2lem3 9063 fin23lem17 9160 domtriomlem 9264 axdc2lem 9270 axdc3lem 9272 axdclem2 9342 alephsucpw 9392 canthp1lem1 9474 gchac 9503 gruina 9640 npex 9808 axcnex 9968 pnfxr 10092 mnfxr 10096 ixxex 12186 prdsval 16115 prdsds 16124 prdshom 16127 ismre 16250 fnmre 16251 fnmrc 16267 mrcfval 16268 mrisval 16290 wunfunc 16559 catcfuccl 16759 catcxpccl 16847 lubfval 16978 glbfval 16991 issubm 17347 issubg 17594 cntzfval 17753 sylow1lem2 18014 lsmfval 18053 pj1fval 18107 issubrg 18780 lssset 18934 lspfval 18973 islbs 19076 lbsext 19163 lbsexg 19164 sraval 19176 aspval 19328 ocvfval 20010 cssval 20026 isobs 20064 islinds 20148 istopon 20717 dmtopon 20727 fncld 20826 leordtval2 21016 cnpfval 21038 iscnp2 21043 kgenf 21344 xkoopn 21392 xkouni 21402 dfac14 21421 xkoccn 21422 prdstopn 21431 xkoco1cn 21460 xkoco2cn 21461 xkococn 21463 xkoinjcn 21490 isfbas 21633 uzrest 21701 acufl 21721 alexsubALTlem2 21852 tsmsval2 21933 ustfn 22005 ustn0 22024 ishtpy 22771 vitali 23382 sspval 27578 shex 28069 hsupval 28193 fpwrelmap 29508 fpwrelmapffs 29509 isrnsigaOLD 30175 dmvlsiga 30192 eulerpartlem1 30429 eulerpartgbij 30434 eulerpartlemmf 30437 coinflippv 30545 ballotlemoex 30547 reprval 30688 kur14lem9 31196 mpstval 31432 mclsrcl 31458 mclsval 31460 heibor1lem 33608 heibor 33620 idlval 33812 psubspset 35030 paddfval 35083 pclfvalN 35175 polfvalN 35190 psubclsetN 35222 docafvalN 36411 djafvalN 36423 dicval 36465 dochfval 36639 djhfval 36686 islpolN 36772 mzpclval 37288 eldiophb 37320 rpnnen3 37599 dfac11 37632 rgspnval 37738 clsk1independent 38344 dmvolsal 40564 ovnval 40755 smfresal 40995 sprbisymrel 41749 uspgrex 41758 uspgrbisymrelALT 41763 issubmgm 41789 lincop 42197 setrec2fun 42439 vsetrec 42446 elpglem3 42456 |
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