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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 4568 | . . 3 ⊢ (𝑥 ∈ 𝒫 𝐵 ↔ 𝑥 ⊆ 𝐵) | |
| 2 | 1 | ralbii 3111 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3927 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4907 | . 2 ⊢ (∪ 𝐴 ⊆ 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) | |
| 5 | 2, 3, 4 | 3bitr4i 306 | 1 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∪ 𝐴 ⊆ 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 ∈ wcel 2143 ∀wral 3079 ⊆ wss 3906 𝒫 cpw 4563 ∪ cuni 4873 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1573 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ral 3080 df-v 3457 df-ss 3923 df-pw 4565 df-uni 4874 |
| This theorem is referenced by: pwssb 5068 elpwpw 5069 elpwuni 5072 intss2 5075 rintn0 5076 dftr4 5225 uniixp 8920 fipwss 9390 dffi3 9392 uniwf 9792 numacn 10034 dfac12lem2 10129 fin23lem32 10329 isf34lem4 10362 isf34lem5 10363 fin1a2lem12 10396 itunitc1 10405 fpwwe2lem11 10627 tsksuc 10748 unirnioo 13477 restid 17487 mrcuni 17678 isacs3lem 18599 dmdprdd 20072 dprdfeq0 20095 dprdres 20101 dprdss 20102 dprdz 20103 subgdmdprd 20107 subgdprd 20108 dprd2dlem1 20114 dprd2da 20115 dmdprdsplit2lem 20118 ablfac1b 20143 lssintcl 21066 lbsextlem2 21264 lbsextlem3 21265 cssmre 21824 topgele 23068 topontopn 23078 unitg 23105 fctop 23142 cctop 23144 ppttop 23145 epttop 23147 mretopd 23230 resttopon 23299 ordtuni 23328 conncompcld 23572 islocfin 23655 kgentopon 23676 txuni2 23703 ptuni2 23714 ptbasfi 23719 xkouni 23737 prdstopn 23766 txdis 23770 txcmplem2 23780 xkococnlem 23797 qtoptop2 23837 qtopuni 23840 tgqtop 23850 opnfbas 23980 neifil 24018 filunibas 24019 trfil1 24024 flimfil 24107 cldsubg 24249 tgpconncompeqg 24250 tgpconncomp 24251 tsmsxplem1 24291 utoptop 24372 unirnblps 24557 unirnbl 24558 setsmstopn 24616 tngtopn 24788 bndth 25098 bcthlem5 25468 ovolficcss 25609 ovollb 25619 voliunlem2 25691 voliunlem3 25692 uniioovol 25719 uniioombl 25729 opnmbllem 25741 ubthlem1 31203 hsupcl 31672 hsupss 31674 hsupunss 31676 hsupval2 31742 fnpreimac 32996 unicls 34274 pwsiga 34501 sigainb 34507 insiga 34508 pwldsys 34528 ddemeas 34607 omssubadd 34671 cvmsss2 35747 dfon2lem2 36255 ntruni 36819 clsint2 36821 neibastop1 36851 neibastop2lem 36852 neibastop3 36854 topmeet 36856 topjoin 36857 fnemeet1 36858 fnemeet2 36859 fnejoin1 36860 opnmbllem0 38288 heiborlem1 38443 elrfi 43408 pwpwuni 45760 0ome 47226 |
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