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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 4559 | . . 3 ⊢ (𝑥 ∈ 𝒫 𝐵 ↔ 𝑥 ⊆ 𝐵) | |
| 2 | 1 | ralbii 3107 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3925 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4898 | . 2 ⊢ (∪ 𝐴 ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) | |
| 5 | 2, 3, 4 | 3bitr4i 305 | 1 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∪ 𝐴 ⊆ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 208 ∈ wcel 2141 ∀wral 3075 ⊆ wss 3904 𝒫 cpw 4554 ∪ cuni 4864 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-tru 1562 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-ral 3076 df-v 3455 df-ss 3921 df-pw 4556 df-uni 4865 |
| This theorem is referenced by: pwssb 5057 elpwpw 5058 elpwuni 5061 intss2 5064 rintn0 5065 dftr4 5212 uniixp 8899 fipwss 9372 dffi3 9374 uniwf 9774 numacn 10002 dfac12lem2 10098 fin23lem32 10298 isf34lem4 10331 isf34lem5 10332 fin1a2lem12 10365 itunitc1 10374 fpwwe2lem11 10596 tsksuc 10717 unirnioo 13450 restid 17445 mrcuni 17636 isacs3lem 18557 dmdprdd 20024 dprdfeq0 20047 dprdres 20053 dprdss 20054 dprdz 20055 subgdmdprd 20059 subgdprd 20060 dprd2dlem1 20066 dprd2da 20067 dmdprdsplit2lem 20070 ablfac1b 20095 lssintcl 21011 lbsextlem2 21209 lbsextlem3 21210 cssmre 21725 topgele 22970 topontopn 22980 unitg 23007 fctop 23044 cctop 23046 ppttop 23047 epttop 23049 mretopd 23132 resttopon 23201 ordtuni 23230 conncompcld 23474 islocfin 23557 kgentopon 23578 txuni2 23605 ptuni2 23616 ptbasfi 23621 xkouni 23639 prdstopn 23668 txdis 23672 txcmplem2 23682 xkococnlem 23699 qtoptop2 23739 qtopuni 23742 tgqtop 23752 opnfbas 23882 neifil 23920 filunibas 23921 trfil1 23926 flimfil 24009 cldsubg 24151 tgpconncompeqg 24152 tgpconncomp 24153 tsmsxplem1 24193 utoptop 24274 unirnblps 24459 unirnbl 24460 setsmstopn 24518 tngtopn 24690 bndth 25000 bcthlem5 25370 ovolficcss 25511 ovollb 25521 voliunlem2 25593 voliunlem3 25594 uniioovol 25621 uniioombl 25631 opnmbllem 25643 ubthlem1 31019 hsupcl 31488 hsupss 31490 hsupunss 31492 hsupval2 31558 fnpreimac 32822 unicls 34161 pwsiga 34388 sigainb 34394 insiga 34395 pwldsys 34415 ddemeas 34494 omssubadd 34558 cvmsss2 35588 dfon2lem2 36096 ntruni 36651 clsint2 36653 neibastop1 36683 neibastop2lem 36684 neibastop3 36686 topmeet 36688 topjoin 36689 fnemeet1 36690 fnemeet2 36691 fnejoin1 36692 opnmbllem0 38119 heiborlem1 38274 elrfi 43239 pwpwuni 45601 0ome 47067 |
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