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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 3082 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3922 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4896 | . 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 2113 ∀wral 3051 ⊆ wss 3901 𝒫 cpw 4554 ∪ cuni 4863 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1544 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-v 3442 df-ss 3918 df-pw 4556 df-uni 4864 |
| This theorem is referenced by: pwssb 5056 elpwpw 5057 elpwuni 5060 intss2 5063 rintn0 5064 dftr4 5211 uniixp 8859 fipwss 9332 dffi3 9334 uniwf 9731 numacn 9959 dfac12lem2 10055 fin23lem32 10254 isf34lem4 10287 isf34lem5 10288 fin1a2lem12 10321 itunitc1 10330 fpwwe2lem11 10552 tsksuc 10673 unirnioo 13365 restid 17353 mrcuni 17544 isacs3lem 18465 dmdprdd 19930 dprdfeq0 19953 dprdres 19959 dprdss 19960 dprdz 19961 subgdmdprd 19965 subgdprd 19966 dprd2dlem1 19972 dprd2da 19973 dmdprdsplit2lem 19976 ablfac1b 20001 lssintcl 20915 lbsextlem2 21114 lbsextlem3 21115 cssmre 21648 topgele 22874 topontopn 22884 unitg 22911 fctop 22948 cctop 22950 ppttop 22951 epttop 22953 mretopd 23036 resttopon 23105 ordtuni 23134 conncompcld 23378 islocfin 23461 kgentopon 23482 txuni2 23509 ptuni2 23520 ptbasfi 23525 xkouni 23543 prdstopn 23572 txdis 23576 txcmplem2 23586 xkococnlem 23603 qtoptop2 23643 qtopuni 23646 tgqtop 23656 opnfbas 23786 neifil 23824 filunibas 23825 trfil1 23830 flimfil 23913 cldsubg 24055 tgpconncompeqg 24056 tgpconncomp 24057 tsmsxplem1 24097 utoptop 24178 unirnblps 24363 unirnbl 24364 setsmstopn 24422 tngtopn 24594 bndth 24913 bcthlem5 25284 ovolficcss 25426 ovollb 25436 voliunlem2 25508 voliunlem3 25509 uniioovol 25536 uniioombl 25546 opnmbllem 25558 ubthlem1 30945 hsupcl 31414 hsupss 31416 hsupunss 31418 hsupval2 31484 fnpreimac 32749 unicls 34060 pwsiga 34287 sigainb 34293 insiga 34294 pwldsys 34314 ddemeas 34393 omssubadd 34457 cvmsss2 35468 dfon2lem2 35976 ntruni 36521 clsint2 36523 neibastop1 36553 neibastop2lem 36554 neibastop3 36556 topmeet 36558 topjoin 36559 fnemeet1 36560 fnemeet2 36561 fnejoin1 36562 opnmbllem0 37853 heiborlem1 38008 elrfi 42932 pwpwuni 45298 0ome 46769 |
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