Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > gruwun | Structured version Visualization version GIF version |
Description: A nonempty Grothendieck universe is a weak universe. (Contributed by Mario Carneiro, 2-Jan-2017.) |
Ref | Expression |
---|---|
gruwun | ⊢ ((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) → 𝑈 ∈ WUni) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | grutr 10595 | . . 3 ⊢ (𝑈 ∈ Univ → Tr 𝑈) | |
2 | 1 | adantr 482 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) → Tr 𝑈) |
3 | simpr 486 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) → 𝑈 ≠ ∅) | |
4 | gruuni 10602 | . . . . 5 ⊢ ((𝑈 ∈ Univ ∧ 𝑥 ∈ 𝑈) → ∪ 𝑥 ∈ 𝑈) | |
5 | 4 | adantlr 713 | . . . 4 ⊢ (((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∪ 𝑥 ∈ 𝑈) |
6 | grupw 10597 | . . . . 5 ⊢ ((𝑈 ∈ Univ ∧ 𝑥 ∈ 𝑈) → 𝒫 𝑥 ∈ 𝑈) | |
7 | 6 | adantlr 713 | . . . 4 ⊢ (((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → 𝒫 𝑥 ∈ 𝑈) |
8 | grupr 10599 | . . . . . 6 ⊢ ((𝑈 ∈ Univ ∧ 𝑥 ∈ 𝑈 ∧ 𝑦 ∈ 𝑈) → {𝑥, 𝑦} ∈ 𝑈) | |
9 | 8 | ad4ant134 1174 | . . . . 5 ⊢ ((((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) ∧ 𝑦 ∈ 𝑈) → {𝑥, 𝑦} ∈ 𝑈) |
10 | 9 | ralrimiva 3140 | . . . 4 ⊢ (((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈) |
11 | 5, 7, 10 | 3jca 1128 | . . 3 ⊢ (((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) ∧ 𝑥 ∈ 𝑈) → (∪ 𝑥 ∈ 𝑈 ∧ 𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈)) |
12 | 11 | ralrimiva 3140 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) → ∀𝑥 ∈ 𝑈 (∪ 𝑥 ∈ 𝑈 ∧ 𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈)) |
13 | iswun 10506 | . . 3 ⊢ (𝑈 ∈ Univ → (𝑈 ∈ WUni ↔ (Tr 𝑈 ∧ 𝑈 ≠ ∅ ∧ ∀𝑥 ∈ 𝑈 (∪ 𝑥 ∈ 𝑈 ∧ 𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈)))) | |
14 | 13 | adantr 482 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) → (𝑈 ∈ WUni ↔ (Tr 𝑈 ∧ 𝑈 ≠ ∅ ∧ ∀𝑥 ∈ 𝑈 (∪ 𝑥 ∈ 𝑈 ∧ 𝒫 𝑥 ∈ 𝑈 ∧ ∀𝑦 ∈ 𝑈 {𝑥, 𝑦} ∈ 𝑈)))) |
15 | 2, 3, 12, 14 | mpbir3and 1342 | 1 ⊢ ((𝑈 ∈ Univ ∧ 𝑈 ≠ ∅) → 𝑈 ∈ WUni) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1087 ∈ wcel 2104 ≠ wne 2941 ∀wral 3062 ∅c0 4262 𝒫 cpw 4539 {cpr 4567 ∪ cuni 4844 Tr wtr 5198 WUnicwun 10502 Univcgru 10592 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-ral 3063 df-rex 3072 df-rab 3287 df-v 3439 df-sbc 3722 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-tr 5199 df-id 5500 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-fv 6466 df-ov 7310 df-oprab 7311 df-mpo 7312 df-map 8648 df-wun 10504 df-gru 10593 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |