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| Mirrors > Home > ILE Home > Th. List > pwnex | Unicode version | ||
| Description: The class of all power sets is a proper class. See also snnex 4538. (Contributed by BJ, 2-May-2021.) |
| Ref | Expression |
|---|---|
| pwnex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | abnex 4537 |
. . 3
| |
| 2 | df-nel 2496 |
. . 3
| |
| 3 | 1, 2 | sylibr 134 |
. 2
|
| 4 | vpwex 4262 |
. . 3
| |
| 5 | vex 2802 |
. . . 4
| |
| 6 | 5 | pwid 3664 |
. . 3
|
| 7 | 4, 6 | pm3.2i 272 |
. 2
|
| 8 | 3, 7 | mpg 1497 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4201 ax-pow 4257 ax-un 4523 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-nel 2496 df-ral 2513 df-rex 2514 df-v 2801 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-uni 3888 df-iun 3966 |
| This theorem is referenced by: topnex 14754 |
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