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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 4546 | . . 3 ⊢ (𝑥 ∈ 𝒫 𝐵 ↔ 𝑥 ⊆ 𝐵) | |
| 2 | 1 | ralbii 3083 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3910 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4883 | . 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 3051 ⊆ wss 3889 𝒫 cpw 4541 ∪ cuni 4850 |
| 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 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-v 3431 df-ss 3906 df-pw 4543 df-uni 4851 |
| This theorem is referenced by: pwssb 5043 elpwpw 5044 elpwuni 5047 intss2 5050 rintn0 5051 dftr4 5198 uniixp 8869 fipwss 9342 dffi3 9344 uniwf 9743 numacn 9971 dfac12lem2 10067 fin23lem32 10266 isf34lem4 10299 isf34lem5 10300 fin1a2lem12 10333 itunitc1 10342 fpwwe2lem11 10564 tsksuc 10685 unirnioo 13402 restid 17396 mrcuni 17587 isacs3lem 18508 dmdprdd 19976 dprdfeq0 19999 dprdres 20005 dprdss 20006 dprdz 20007 subgdmdprd 20011 subgdprd 20012 dprd2dlem1 20018 dprd2da 20019 dmdprdsplit2lem 20022 ablfac1b 20047 lssintcl 20959 lbsextlem2 21157 lbsextlem3 21158 cssmre 21673 topgele 22895 topontopn 22905 unitg 22932 fctop 22969 cctop 22971 ppttop 22972 epttop 22974 mretopd 23057 resttopon 23126 ordtuni 23155 conncompcld 23399 islocfin 23482 kgentopon 23503 txuni2 23530 ptuni2 23541 ptbasfi 23546 xkouni 23564 prdstopn 23593 txdis 23597 txcmplem2 23607 xkococnlem 23624 qtoptop2 23664 qtopuni 23667 tgqtop 23677 opnfbas 23807 neifil 23845 filunibas 23846 trfil1 23851 flimfil 23934 cldsubg 24076 tgpconncompeqg 24077 tgpconncomp 24078 tsmsxplem1 24118 utoptop 24199 unirnblps 24384 unirnbl 24385 setsmstopn 24443 tngtopn 24615 bndth 24925 bcthlem5 25295 ovolficcss 25436 ovollb 25446 voliunlem2 25518 voliunlem3 25519 uniioovol 25546 uniioombl 25556 opnmbllem 25568 ubthlem1 30941 hsupcl 31410 hsupss 31412 hsupunss 31414 hsupval2 31480 fnpreimac 32743 unicls 34047 pwsiga 34274 sigainb 34280 insiga 34281 pwldsys 34301 ddemeas 34380 omssubadd 34444 cvmsss2 35456 dfon2lem2 35964 ntruni 36509 clsint2 36511 neibastop1 36541 neibastop2lem 36542 neibastop3 36544 topmeet 36546 topjoin 36547 fnemeet1 36548 fnemeet2 36549 fnejoin1 36550 opnmbllem0 37977 heiborlem1 38132 elrfi 43126 pwpwuni 45488 0ome 46957 |
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