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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 4541 | . . 3 ⊢ (𝑥 ∈ 𝒫 𝐵 ↔ 𝑥 ⊆ 𝐵) | |
| 2 | 1 | ralbii 3086 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3911 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4878 | . 2 ⊢ (∪ 𝐴 ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) | |
| 5 | 2, 3, 4 | 3bitr4i 304 | 1 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∪ 𝐴 ⊆ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 ∈ wcel 2119 ∀wral 3054 ⊆ wss 3890 𝒫 cpw 4536 ∪ cuni 4845 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-tru 1550 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-ral 3055 df-v 3434 df-ss 3907 df-pw 4538 df-uni 4846 |
| This theorem is referenced by: pwssb 5037 elpwpw 5038 elpwuni 5041 intss2 5044 rintn0 5045 dftr4 5192 uniixp 8866 fipwss 9339 dffi3 9341 uniwf 9741 numacn 9969 dfac12lem2 10065 fin23lem32 10264 isf34lem4 10297 isf34lem5 10298 fin1a2lem12 10331 itunitc1 10340 fpwwe2lem11 10562 tsksuc 10683 unirnioo 13400 restid 17394 mrcuni 17585 isacs3lem 18506 dmdprdd 19974 dprdfeq0 19997 dprdres 20003 dprdss 20004 dprdz 20005 subgdmdprd 20009 subgdprd 20010 dprd2dlem1 20016 dprd2da 20017 dmdprdsplit2lem 20020 ablfac1b 20045 lssintcl 20961 lbsextlem2 21159 lbsextlem3 21160 cssmre 21675 topgele 22920 topontopn 22930 unitg 22957 fctop 22994 cctop 22996 ppttop 22997 epttop 22999 mretopd 23082 resttopon 23151 ordtuni 23180 conncompcld 23424 islocfin 23507 kgentopon 23528 txuni2 23555 ptuni2 23566 ptbasfi 23571 xkouni 23589 prdstopn 23618 txdis 23622 txcmplem2 23632 xkococnlem 23649 qtoptop2 23689 qtopuni 23692 tgqtop 23702 opnfbas 23832 neifil 23870 filunibas 23871 trfil1 23876 flimfil 23959 cldsubg 24101 tgpconncompeqg 24102 tgpconncomp 24103 tsmsxplem1 24143 utoptop 24224 unirnblps 24409 unirnbl 24410 setsmstopn 24468 tngtopn 24640 bndth 24950 bcthlem5 25320 ovolficcss 25461 ovollb 25471 voliunlem2 25543 voliunlem3 25544 uniioovol 25571 uniioombl 25581 opnmbllem 25593 ubthlem1 30966 hsupcl 31435 hsupss 31437 hsupunss 31439 hsupval2 31505 fnpreimac 32769 unicls 34094 pwsiga 34321 sigainb 34327 insiga 34328 pwldsys 34348 ddemeas 34427 omssubadd 34491 cvmsss2 35509 dfon2lem2 36017 ntruni 36562 clsint2 36564 neibastop1 36594 neibastop2lem 36595 neibastop3 36597 topmeet 36599 topjoin 36600 fnemeet1 36601 fnemeet2 36602 fnejoin1 36603 opnmbllem0 38030 heiborlem1 38185 elrfi 43150 pwpwuni 45512 0ome 46979 |
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