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Related theorems GIF version |
| 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 | ⊢ ¬ ℘∪A ∈ A |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sdomirr 4472 | . . 3 ⊢ ¬ ℘∪A ≺ ℘∪A | |
| 2 | uniexb 2907 | . . . 4 ⊢ (A ∈ V ↔ ∪A ∈ V) | |
| 3 | ssdom2g 4409 | . . . . . 6 ⊢ (∪A ∈ V → (℘∪A ⊆ ∪A → ℘∪A ≼ ∪A)) | |
| 4 | domsdomtr 4476 | . . . . . . . 8 ⊢ ((℘∪A ≼ ∪A ⋀ ∪A ≺ ℘∪A) → ℘∪A ≺ ℘∪A) | |
| 5 | canth2g 4485 | . . . . . . . 8 ⊢ (∪A ∈ V → ∪A ≺ ℘∪A) | |
| 6 | 4, 5 | sylan2 451 | . . . . . . 7 ⊢ ((℘∪A ≼ ∪A ⋀ ∪A ∈ V) → ℘∪A ≺ ℘∪A) |
| 7 | 6 | expcom 374 | . . . . . 6 ⊢ (∪A ∈ V → (℘∪A ≼ ∪A → ℘∪A ≺ ℘∪A)) |
| 8 | 3, 7 | syld 27 | . . . . 5 ⊢ (∪A ∈ V → (℘∪A ⊆ ∪A → ℘∪A ≺ ℘∪A)) |
| 9 | elssuni 2526 | . . . . 5 ⊢ (℘∪A ∈ A → ℘∪A ⊆ ∪A) | |
| 10 | 8, 9 | syl5 21 | . . . 4 ⊢ (∪A ∈ V → (℘∪A ∈ A → ℘∪A ≺ ℘∪A)) |
| 11 | 2, 10 | sylbi 199 | . . 3 ⊢ (A ∈ V → (℘∪A ∈ A → ℘∪A ≺ ℘∪A)) |
| 12 | 1, 11 | mtoi 107 | . 2 ⊢ (A ∈ V → ¬ ℘∪A ∈ A) |
| 13 | elisset 1817 | . . . 4 ⊢ (℘∪A ∈ A → ℘∪A ∈ V) | |
| 14 | pwexb 2908 | . . . . 5 ⊢ (∪A ∈ V ↔ ℘∪A ∈ V) | |
| 15 | 2, 14 | bitr 173 | . . . 4 ⊢ (A ∈ V ↔ ℘∪A ∈ V) |
| 16 | 13, 15 | sylibr 200 | . . 3 ⊢ (℘∪A ∈ A → A ∈ V) |
| 17 | 16 | con3i 98 | . 2 ⊢ (¬ A ∈ V → ¬ ℘∪A ∈ A) |
| 18 | 12, 17 | pm2.61i 126 | 1 ⊢ ¬ ℘∪A ∈ A |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 2 → wi 3 ∈ wcel 958 Vcvv 1811 ⊆ wss 2047 ℘cpw 2401 ∪cuni 2503 class class class wbr 2619 ≼ cdom 4365 ≺ csdm 4366 |
| This theorem is referenced by: pnfnre 5496 spwnex3 8655 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-9 965 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-rep 2693 ax-sep 2703 ax-pow 2742 ax-pr 2779 ax-un 2866 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 777 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-ral 1649 df-rex 1650 df-rab 1652 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-uni 2504 df-br 2620 df-opab 2667 df-id 2835 df-xp 3184 df-rel 3185 df-cnv 3186 df-co 3187 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fun 3192 df-fn 3193 df-f 3194 df-f1 3195 df-fo 3196 df-f1o 3197 df-fv 3198 df-er 4261 df-en 4368 df-dom 4369 df-sdom 4370 |