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| Mirrors > Home > ILE Home > Th. List > sspwuni | Unicode version | ||
| Description: Subclass relationship for power class and union. (Contributed by NM, 18-Jul-2006.) |
| Ref | Expression |
|---|---|
| sspwuni |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 2824 |
. . . 4
| |
| 2 | 1 | elpw 3694 |
. . 3
|
| 3 | 2 | ralbii 2556 |
. 2
|
| 4 | dfss3 3236 |
. 2
| |
| 5 | unissb 3965 |
. 2
| |
| 6 | 3, 4, 5 | 3bitr4i 212 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-v 2823 df-in 3226 df-ss 3233 df-pw 3690 df-uni 3936 |
| This theorem is used by: pwssb 4098 elpwpw 4099 elpwuni 4102 rintm 4105 dftr4 4234 iotass 5355 tfrlemibfn 6599 tfr1onlembfn 6615 tfrcllembfn 6628 uniixp 7003 fipwssg 7313 unirnioo 10375 restid 13604 lssintclm 14721 topgele 15130 topontopn 15138 unitg 15163 epttop 15191 resttopon 15272 txuni2 15357 txdis 15378 unirnblps 15523 unirnbl 15524 |
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