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| Mirrors > Home > MPE Home > Th. List > acufl | Structured version Visualization version GIF version | ||
| Description: The axiom of choice implies the ultrafilter lemma. (Contributed by Mario Carneiro, 26-Aug-2015.) |
| Ref | Expression |
|---|---|
| acufl | ⊢ (CHOICE → UFL = V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | vex 3454 | . . . . . . 7 ⊢ 𝑥 ∈ V | |
| 2 | 1 | pwex 5341 | . . . . . 6 ⊢ 𝒫 𝑥 ∈ V |
| 3 | 2 | pwex 5341 | . . . . 5 ⊢ 𝒫 𝒫 𝑥 ∈ V |
| 4 | dfac10 10219 | . . . . . 6 ⊢ (CHOICE ↔ dom card = V) | |
| 5 | 4 | biimpi 219 | . . . . 5 ⊢ (CHOICE → dom card = V) |
| 6 | 3, 5 | eleqtrrid 2867 | . . . 4 ⊢ (CHOICE → 𝒫 𝒫 𝑥 ∈ dom card) |
| 7 | numufl 24239 | . . . 4 ⊢ (𝒫 𝒫 𝑥 ∈ dom card → 𝑥 ∈ UFL) | |
| 8 | 6, 7 | syl 18 | . . 3 ⊢ (CHOICE → 𝑥 ∈ UFL) |
| 9 | 1 | a1i 11 | . . 3 ⊢ (CHOICE → 𝑥 ∈ V) |
| 10 | 8, 9 | 2thd 268 | . 2 ⊢ (CHOICE → (𝑥 ∈ UFL ↔ 𝑥 ∈ V)) |
| 11 | 10 | eqrdv 2758 | 1 ⊢ (CHOICE → UFL = V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 Vcvv 3450 𝒫 cpw 4556 dom cdm 5650 cardccrd 10019 CHOICEwac 10197 UFLcufl 24224 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-se 5604 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-isom 6547 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-rpss 7739 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8302 df-wrecs 8333 df-recs 8382 df-rdg 8421 df-1o 8479 df-2o 8480 df-oadd 8483 df-er 8720 df-en 8977 df-dom 8978 df-fin 8980 df-fi 9406 df-dju 9985 df-card 10023 df-ac 10198 df-fbas 21680 df-fg 21681 df-fil 24170 df-ufil 24225 df-ufl 24226 |
| This theorem is used by: ptcmp 24382 dfac21 44161 |
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