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Mirrors > Home > MPE Home > Th. List > pwnex | Structured version Visualization version Unicode version |
Description: The class of all power sets is a proper class. See also snnex 6966. (Contributed by BJ, 2-May-2021.) |
Ref | Expression |
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pwnex |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | abnex 6965 |
. . 3
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2 | df-nel 2898 |
. . 3
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3 | 1, 2 | sylibr 224 |
. 2
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4 | vpwex 4849 |
. . 3
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5 | vex 3203 |
. . . 4
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6 | 5 | pwid 4174 |
. . 3
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7 | 4, 6 | pm3.2i 471 |
. 2
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8 | 3, 7 | mpg 1724 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-pow 4843 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-nel 2898 df-ral 2917 df-rex 2918 df-v 3202 df-in 3581 df-ss 3588 df-pw 4160 df-sn 4178 df-uni 4437 df-iun 4522 |
This theorem is referenced by: topnex 20800 |
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