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| Mirrors > Home > MPE Home > Th. List > wunccl | Structured version Visualization version GIF version | ||
| Description: The weak universe closure of a set is a weak universe. (Contributed by Mario Carneiro, 2-Jan-2017.) |
| Ref | Expression |
|---|---|
| wunccl | ⊢ (𝐴 ∈ 𝑉 → (wUniCl‘𝐴) ∈ WUni) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wuncval 10857 | . 2 ⊢ (𝐴 ∈ 𝑉 → (wUniCl‘𝐴) = ∩ {𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢}) | |
| 2 | ssrab2 4008 | . . 3 ⊢ {𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢} ⊆ WUni | |
| 3 | wunex 10854 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → ∃𝑢 ∈ WUni 𝐴 ⊆ 𝑢) | |
| 4 | rabn0 4342 | . . . 4 ⊢ ({𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢} ≠ ∅ ↔ ∃𝑢 ∈ WUni 𝐴 ⊆ 𝑢) | |
| 5 | 3, 4 | sylibr 237 | . . 3 ⊢ (𝐴 ∈ 𝑉 → {𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢} ≠ ∅) |
| 6 | intwun 10850 | . . 3 ⊢ (({𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢} ⊆ WUni ∧ {𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢} ≠ ∅) → ∩ {𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢} ∈ WUni) | |
| 7 | 2, 5, 6 | sylancr 599 | . 2 ⊢ (𝐴 ∈ 𝑉 → ∩ {𝑢 ∈ WUni ∣ 𝐴 ⊆ 𝑢} ∈ WUni) |
| 8 | 1, 7 | eqeltrd 2864 | 1 ⊢ (𝐴 ∈ 𝑉 → (wUniCl‘𝐴) ∈ WUni) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2147 ≠ wne 2959 ∃wrex 3090 {crab 3416 ⊆ wss 3900 ∅c0 4281 ∩ cint 4910 ‘cfv 6561 WUnicwun 10815 wUniClcwunm 10816 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-inf2 9672 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-iin 4957 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-ov 7449 df-om 7905 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-1o 8507 df-wun 10817 df-wunc 10818 |
| This theorem is used by: wuncidm 10861 wuncval2 10862 |
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