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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 4563 | . . 3 ⊢ (𝑥 ∈ 𝒫 𝐵 ↔ 𝑥 ⊆ 𝐵) | |
| 2 | 1 | ralbii 3111 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3928 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4902 | . 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 2145 ∀wral 3079 ⊆ wss 3907 𝒫 cpw 4558 ∪ cuni 4868 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-tru 1566 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-ral 3080 df-v 3459 df-ss 3924 df-pw 4560 df-uni 4869 |
| This theorem is referenced by: pwssb 5063 elpwpw 5064 elpwuni 5067 intss2 5070 rintn0 5071 dftr4 5218 uniixp 8907 fipwss 9377 dffi3 9379 uniwf 9779 numacn 10021 dfac12lem2 10116 fin23lem32 10316 isf34lem4 10349 isf34lem5 10350 fin1a2lem12 10383 itunitc1 10392 fpwwe2lem11 10614 tsksuc 10735 unirnioo 13467 restid 17476 mrcuni 17667 isacs3lem 18588 dmdprdd 20062 dprdfeq0 20085 dprdres 20091 dprdss 20092 dprdz 20093 subgdmdprd 20097 subgdprd 20098 dprd2dlem1 20104 dprd2da 20105 dmdprdsplit2lem 20108 ablfac1b 20133 lssintcl 21054 lbsextlem2 21252 lbsextlem3 21253 cssmre 21803 topgele 23048 topontopn 23058 unitg 23085 fctop 23122 cctop 23124 ppttop 23125 epttop 23127 mretopd 23210 resttopon 23279 ordtuni 23308 conncompcld 23552 islocfin 23635 kgentopon 23656 txuni2 23683 ptuni2 23694 ptbasfi 23699 xkouni 23717 prdstopn 23746 txdis 23750 txcmplem2 23760 xkococnlem 23777 qtoptop2 23817 qtopuni 23820 tgqtop 23830 opnfbas 23960 neifil 23998 filunibas 23999 trfil1 24004 flimfil 24087 cldsubg 24229 tgpconncompeqg 24230 tgpconncomp 24231 tsmsxplem1 24271 utoptop 24352 unirnblps 24537 unirnbl 24538 setsmstopn 24596 tngtopn 24768 bndth 25078 bcthlem5 25448 ovolficcss 25589 ovollb 25599 voliunlem2 25671 voliunlem3 25672 uniioovol 25699 uniioombl 25709 opnmbllem 25721 ubthlem1 31131 hsupcl 31600 hsupss 31602 hsupunss 31604 hsupval2 31670 fnpreimac 32927 unicls 34210 pwsiga 34437 sigainb 34443 insiga 34444 pwldsys 34464 ddemeas 34543 omssubadd 34607 cvmsss2 35637 dfon2lem2 36145 ntruni 36700 clsint2 36702 neibastop1 36732 neibastop2lem 36733 neibastop3 36735 topmeet 36737 topjoin 36738 fnemeet1 36739 fnemeet2 36740 fnejoin1 36741 opnmbllem0 38167 heiborlem1 38322 elrfi 43287 pwpwuni 45635 0ome 47101 |
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