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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 4545. (Contributed by BJ, 2-May-2021.) |
| Ref | Expression |
|---|---|
| pwnex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | abnex 4544 |
. . 3
| |
| 2 | df-nel 2498 |
. . 3
| |
| 3 | 1, 2 | sylibr 134 |
. 2
|
| 4 | vpwex 4269 |
. . 3
| |
| 5 | vex 2805 |
. . . 4
| |
| 6 | 5 | pwid 3667 |
. . 3
|
| 7 | 4, 6 | pm3.2i 272 |
. 2
|
| 8 | 3, 7 | mpg 1499 |
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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-un 4530 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-nel 2498 df-ral 2515 df-rex 2516 df-v 2804 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-uni 3894 df-iun 3972 |
| This theorem is referenced by: topnex 14809 |
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