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| Mirrors > Home > MPE Home > Th. List > sspwuni | Structured version Visualization version GIF version | ||
| Description: Subclass relationship for power class and union. (Contributed by NM, 18-Jul-2006.) |
| Ref | Expression |
|---|---|
| sspwuni | ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∪ 𝐴 ⊆ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | velpw 4560 | . . 3 ⊢ (𝑥 ∈ 𝒫 𝐵 ↔ 𝑥 ⊆ 𝐵) | |
| 2 | 1 | ralbii 3083 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3923 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4897 | . 2 ⊢ (∪ 𝐴 ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) | |
| 5 | 2, 3, 4 | 3bitr4i 303 | 1 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∪ 𝐴 ⊆ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∈ wcel 2114 ∀wral 3052 ⊆ wss 3902 𝒫 cpw 4555 ∪ cuni 4864 |
| 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 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-v 3443 df-ss 3919 df-pw 4557 df-uni 4865 |
| This theorem is referenced by: pwssb 5057 elpwpw 5058 elpwuni 5061 intss2 5064 rintn0 5065 dftr4 5212 uniixp 8863 fipwss 9336 dffi3 9338 uniwf 9735 numacn 9963 dfac12lem2 10059 fin23lem32 10258 isf34lem4 10291 isf34lem5 10292 fin1a2lem12 10325 itunitc1 10334 fpwwe2lem11 10556 tsksuc 10677 unirnioo 13369 restid 17357 mrcuni 17548 isacs3lem 18469 dmdprdd 19934 dprdfeq0 19957 dprdres 19963 dprdss 19964 dprdz 19965 subgdmdprd 19969 subgdprd 19970 dprd2dlem1 19976 dprd2da 19977 dmdprdsplit2lem 19980 ablfac1b 20005 lssintcl 20919 lbsextlem2 21118 lbsextlem3 21119 cssmre 21652 topgele 22878 topontopn 22888 unitg 22915 fctop 22952 cctop 22954 ppttop 22955 epttop 22957 mretopd 23040 resttopon 23109 ordtuni 23138 conncompcld 23382 islocfin 23465 kgentopon 23486 txuni2 23513 ptuni2 23524 ptbasfi 23529 xkouni 23547 prdstopn 23576 txdis 23580 txcmplem2 23590 xkococnlem 23607 qtoptop2 23647 qtopuni 23650 tgqtop 23660 opnfbas 23790 neifil 23828 filunibas 23829 trfil1 23834 flimfil 23917 cldsubg 24059 tgpconncompeqg 24060 tgpconncomp 24061 tsmsxplem1 24101 utoptop 24182 unirnblps 24367 unirnbl 24368 setsmstopn 24426 tngtopn 24598 bndth 24917 bcthlem5 25288 ovolficcss 25430 ovollb 25440 voliunlem2 25512 voliunlem3 25513 uniioovol 25540 uniioombl 25550 opnmbllem 25562 ubthlem1 30928 hsupcl 31397 hsupss 31399 hsupunss 31401 hsupval2 31467 fnpreimac 32730 unicls 34041 pwsiga 34268 sigainb 34274 insiga 34275 pwldsys 34295 ddemeas 34374 omssubadd 34438 cvmsss2 35449 dfon2lem2 35957 ntruni 36502 clsint2 36504 neibastop1 36534 neibastop2lem 36535 neibastop3 36537 topmeet 36539 topjoin 36540 fnemeet1 36541 fnemeet2 36542 fnejoin1 36543 opnmbllem0 37828 heiborlem1 37983 elrfi 42972 pwpwuni 45338 0ome 46809 |
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