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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 3084 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ⊆ 𝐵) |
| 3 | dfss3 3924 | . 2 ⊢ (𝐴 ⊆ 𝒫 𝐵 ↔ ∀𝑥 ∈ 𝐴 𝑥 ∈ 𝒫 𝐵) | |
| 4 | unissb 4898 | . 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 3052 ⊆ wss 3903 𝒫 cpw 4556 ∪ cuni 4865 |
| 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 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-ral 3053 df-v 3444 df-ss 3920 df-pw 4558 df-uni 4866 |
| This theorem is referenced by: pwssb 5058 elpwpw 5059 elpwuni 5062 intss2 5065 rintn0 5066 dftr4 5213 uniixp 8871 fipwss 9344 dffi3 9346 uniwf 9743 numacn 9971 dfac12lem2 10067 fin23lem32 10266 isf34lem4 10299 isf34lem5 10300 fin1a2lem12 10333 itunitc1 10342 fpwwe2lem11 10564 tsksuc 10685 unirnioo 13377 restid 17365 mrcuni 17556 isacs3lem 18477 dmdprdd 19942 dprdfeq0 19965 dprdres 19971 dprdss 19972 dprdz 19973 subgdmdprd 19977 subgdprd 19978 dprd2dlem1 19984 dprd2da 19985 dmdprdsplit2lem 19988 ablfac1b 20013 lssintcl 20927 lbsextlem2 21126 lbsextlem3 21127 cssmre 21660 topgele 22886 topontopn 22896 unitg 22923 fctop 22960 cctop 22962 ppttop 22963 epttop 22965 mretopd 23048 resttopon 23117 ordtuni 23146 conncompcld 23390 islocfin 23473 kgentopon 23494 txuni2 23521 ptuni2 23532 ptbasfi 23537 xkouni 23555 prdstopn 23584 txdis 23588 txcmplem2 23598 xkococnlem 23615 qtoptop2 23655 qtopuni 23658 tgqtop 23668 opnfbas 23798 neifil 23836 filunibas 23837 trfil1 23842 flimfil 23925 cldsubg 24067 tgpconncompeqg 24068 tgpconncomp 24069 tsmsxplem1 24109 utoptop 24190 unirnblps 24375 unirnbl 24376 setsmstopn 24434 tngtopn 24606 bndth 24925 bcthlem5 25296 ovolficcss 25438 ovollb 25448 voliunlem2 25520 voliunlem3 25521 uniioovol 25548 uniioombl 25558 opnmbllem 25570 ubthlem1 30957 hsupcl 31426 hsupss 31428 hsupunss 31430 hsupval2 31496 fnpreimac 32759 unicls 34080 pwsiga 34307 sigainb 34313 insiga 34314 pwldsys 34334 ddemeas 34413 omssubadd 34477 cvmsss2 35487 dfon2lem2 35995 ntruni 36540 clsint2 36542 neibastop1 36572 neibastop2lem 36573 neibastop3 36575 topmeet 36577 topjoin 36578 fnemeet1 36579 fnemeet2 36580 fnejoin1 36581 opnmbllem0 37901 heiborlem1 38056 elrfi 43045 pwpwuni 45411 0ome 46881 |
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