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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 4551. (Contributed by BJ, 2-May-2021.) |
| Ref | Expression |
|---|---|
| pwnex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | abnex 4550 |
. . 3
| |
| 2 | df-nel 2499 |
. . 3
| |
| 3 | 1, 2 | sylibr 134 |
. 2
|
| 4 | vpwex 4275 |
. . 3
| |
| 5 | vex 2806 |
. . . 4
| |
| 6 | 5 | pwid 3671 |
. . 3
|
| 7 | 4, 6 | pm3.2i 272 |
. 2
|
| 8 | 3, 7 | mpg 1500 |
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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-un 4536 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-nel 2499 df-ral 2516 df-rex 2517 df-v 2805 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-uni 3899 df-iun 3977 |
| This theorem is referenced by: topnex 14880 |
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