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| Description: 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 |
|---|---|
| pwuninel |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sdomirr 4478 |
. . 3
| |
| 2 | uniexb 2913 |
. . . 4
| |
| 3 | ssdom2g 4415 |
. . . . . 6
| |
| 4 | domsdomtr 4482 |
. . . . . . . 8
| |
| 5 | canth2g 4491 |
. . . . . . . 8
| |
| 6 | 4, 5 | sylan2 453 |
. . . . . . 7
|
| 7 | 6 | expcom 374 |
. . . . . 6
|
| 8 | 3, 7 | syld 27 |
. . . . 5
|
| 9 | elssuni 2530 |
. . . . 5
| |
| 10 | 8, 9 | syl5 21 |
. . . 4
|
| 11 | 2, 10 | sylbi 199 |
. . 3
|
| 12 | 1, 11 | mtoi 107 |
. 2
|
| 13 | elisset 1820 |
. . . 4
| |
| 14 | pwexb 2914 |
. . . . 5
| |
| 15 | 2, 14 | bitr 173 |
. . . 4
|
| 16 | 13, 15 | sylibr 200 |
. . 3
|
| 17 | 16 | con3i 98 |
. 2
|
| 18 | 12, 17 | pm2.61i 126 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: pnfnre 5508 spwnex3 8651 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-9 967 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-rep 2698 ax-sep 2708 ax-pow 2748 ax-pr 2785 ax-un 2872 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 779 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-ral 1652 df-rex 1653 df-rab 1655 df-v 1815 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-nul 2284 df-pw 2406 df-sn 2416 df-pr 2417 df-op 2420 df-uni 2508 df-br 2625 df-opab 2672 df-id 2841 df-xp 3190 df-rel 3191 df-cnv 3192 df-co 3193 df-dm 3194 df-rn 3195 df-res 3196 df-ima 3197 df-fun 3198 df-fn 3199 df-f 3200 df-f1 3201 df-fo 3202 df-f1o 3203 df-fv 3204 df-er 4267 df-en 4374 df-dom 4375 df-sdom 4376 |