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| Description: The power set of the power set of the union of a set does not belong to the set. This theorem provides a way of constructing a new set that doesn't belong to a given set. |
| Ref | Expression |
|---|---|
| 2pwuninel |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sdomirr 5535 |
. . 3
| |
| 2 | ssdom2g 5468 |
. . . . 5
| |
| 3 | domsdomtr 5539 |
. . . . . . 7
| |
| 4 | 3 | ex 402 |
. . . . . 6
|
| 5 | canth2g 5549 |
. . . . . . 7
| |
| 6 | pwexb 3852 |
. . . . . . . 8
| |
| 7 | canth2g 5549 |
. . . . . . . 8
| |
| 8 | 6, 7 | sylbi 216 |
. . . . . . 7
|
| 9 | sdomtr 5537 |
. . . . . . 7
| |
| 10 | 5, 8, 9 | syl11anc 524 |
. . . . . 6
|
| 11 | 4, 10 | syl5com 63 |
. . . . 5
|
| 12 | 2, 11 | syld 30 |
. . . 4
|
| 13 | elssuni 3206 |
. . . 4
| |
| 14 | 12, 13 | syl5 20 |
. . 3
|
| 15 | 1, 14 | mtoi 122 |
. 2
|
| 16 | elisset 2299 |
. . . 4
| |
| 17 | pwexb 3852 |
. . . . 5
| |
| 18 | 6, 17 | bitri 190 |
. . . 4
|
| 19 | 16, 18 | sylibr 217 |
. . 3
|
| 20 | 19 | con3i 114 |
. 2
|
| 21 | 15, 20 | pm2.61i 140 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: mnfnre 6666 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-13 1311 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-rep 3428 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3an 860 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-ral 2109 df-rex 2110 df-rab 2112 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-uni 3178 df-br 3339 df-opab 3396 df-id 3586 df-xp 4000 df-rel 4001 df-cnv 4002 df-co 4003 df-dm 4004 df-rn 4005 df-res 4006 df-ima 4007 df-fun 4008 df-fn 4009 df-f 4010 df-f1 4011 df-fo 4012 df-f1o 4013 df-fv 4014 df-er 5318 df-en 5427 df-dom 5428 df-sdom 5429 |