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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 4561 | . . 3 ⊢ (𝑥 ∈ 𝒫 𝐵 ↔ 𝑥 ⊆ 𝐵) | |
| 2 | 1 | ralbii 3108 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3897 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4900 | . 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 |
| This proof depends on syntax axioms: ↔ wb 209 ∈ wcel 2144 ∀wral 3076 ⊆ wss 3895 𝒫 cpw 4556 ∪ cuni 4866 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-v 3452 df-ss 3896 df-pw 4558 df-uni 4867 |
| This theorem is used by: pwssb 5060 elpwpw 5061 elpwuni 5064 intss2 5067 rintn0 5068 dftr4 5217 uniixp 8952 fipwss 9424 dffi3 9426 uniwf 9831 numacn 10131 dfac12lem2 10226 fin23lem32 10425 isf34lem4 10458 isf34lem5 10459 fin1a2lem12 10492 itunitc1 10501 fpwwe2lem11 10729 tsksuc 10850 unirnioo 13583 restid 17609 mrcuni 17800 isacs3lem 18721 dmdprdd 20220 dprdfeq0 20243 dprdres 20249 dprdss 20250 dprdz 20251 subgdmdprd 20255 subgdprd 20256 dprd2dlem1 20262 dprd2da 20263 dmdprdsplit2lem 20266 ablfac1b 20291 lssintcl 21244 lbsextlem2 21442 lbsextlem3 21443 cssmre 22004 topgele 23253 topontopn 23263 unitg 23290 fctop 23327 cctop 23329 ppttop 23330 epttop 23332 mretopd 23415 resttopon 23484 ordtuni 23513 conncompcld 23757 islocfin 23841 kgentopon 23862 txuni2 23889 ptuni2 23900 ptbasfi 23905 xkouni 23923 prdstopn 23952 txdis 23956 txcmplem2 23966 xkococnlem 23983 qtoptop2 24023 qtopuni 24026 tgqtop 24036 opnfbas 24166 neifil 24204 filunibas 24205 trfil1 24210 flimfil 24293 cldsubg 24435 tgpconncompeqg 24436 tgpconncomp 24437 tsmsxplem1 24477 utoptop 24558 unirnblps 24743 unirnbl 24744 setsmstopn 24802 tngtopn 24974 bndth 25284 bcthlem5 25654 ovolficcss 25795 ovollb 25805 voliunlem2 25877 voliunlem3 25878 uniioovol 25905 uniioombl 25915 opnmbllem 25927 ubthlem1 31477 hsupcl 31946 hsupss 31948 hsupunss 31950 hsupval2 32016 fnpreimac 33311 reff 34517 unicls 34581 pwsiga 34808 sigainb 34815 insiga 34816 pwldsys 34836 ddemeas 34915 omssubadd 34978 cvmsss2 36125 dfon2lem2 36638 ntruni 37207 clsint2 37209 neibastop1 37239 neibastop2lem 37240 neibastop3 37242 topmeet 37244 topjoin 37245 fnemeet1 37246 fnemeet2 37247 fnejoin1 37248 opnmbllem0 38667 heiborlem1 38838 elrfi 43798 pwpwuni 46167 0ome 47632 |
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