| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > gruxp | Structured version Visualization version GIF version | ||
| Description: A Grothendieck universe contains binary cartesian products of its elements. (Contributed by Mario Carneiro, 9-Jun-2013.) |
| Ref | Expression |
|---|---|
| gruxp | ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → (𝐴 × 𝐵) ∈ 𝑈) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | gruun 10825 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → (𝐴 ∪ 𝐵) ∈ 𝑈) | |
| 2 | grupw 10814 | . . . 4 ⊢ ((𝑈 ∈ Univ ∧ (𝐴 ∪ 𝐵) ∈ 𝑈) → 𝒫 (𝐴 ∪ 𝐵) ∈ 𝑈) | |
| 3 | grupw 10814 | . . . . 5 ⊢ ((𝑈 ∈ Univ ∧ 𝒫 (𝐴 ∪ 𝐵) ∈ 𝑈) → 𝒫 𝒫 (𝐴 ∪ 𝐵) ∈ 𝑈) | |
| 4 | xpsspw 5793 | . . . . . 6 ⊢ (𝐴 × 𝐵) ⊆ 𝒫 𝒫 (𝐴 ∪ 𝐵) | |
| 5 | gruss 10815 | . . . . . 6 ⊢ ((𝑈 ∈ Univ ∧ 𝒫 𝒫 (𝐴 ∪ 𝐵) ∈ 𝑈 ∧ (𝐴 × 𝐵) ⊆ 𝒫 𝒫 (𝐴 ∪ 𝐵)) → (𝐴 × 𝐵) ∈ 𝑈) | |
| 6 | 4, 5 | mp3an3 1452 | . . . . 5 ⊢ ((𝑈 ∈ Univ ∧ 𝒫 𝒫 (𝐴 ∪ 𝐵) ∈ 𝑈) → (𝐴 × 𝐵) ∈ 𝑈) |
| 7 | 3, 6 | syldan 591 | . . . 4 ⊢ ((𝑈 ∈ Univ ∧ 𝒫 (𝐴 ∪ 𝐵) ∈ 𝑈) → (𝐴 × 𝐵) ∈ 𝑈) |
| 8 | 2, 7 | syldan 591 | . . 3 ⊢ ((𝑈 ∈ Univ ∧ (𝐴 ∪ 𝐵) ∈ 𝑈) → (𝐴 × 𝐵) ∈ 𝑈) |
| 9 | 8 | 3ad2antl1 1186 | . 2 ⊢ (((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) ∧ (𝐴 ∪ 𝐵) ∈ 𝑈) → (𝐴 × 𝐵) ∈ 𝑈) |
| 10 | 1, 9 | mpdan 687 | 1 ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → (𝐴 × 𝐵) ∈ 𝑈) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1086 ∈ wcel 2109 ∪ cun 3929 ⊆ wss 3931 𝒫 cpw 4580 × cxp 5657 Univcgru 10809 |
| 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 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2708 ax-sep 5271 ax-nul 5281 ax-pow 5340 ax-pr 5407 ax-un 7734 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2810 df-nfc 2886 df-ral 3053 df-rex 3062 df-rab 3421 df-v 3466 df-sbc 3771 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4889 df-iun 4974 df-br 5125 df-opab 5187 df-mpt 5207 df-tr 5235 df-id 5553 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6489 df-fun 6538 df-fn 6539 df-f 6540 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-map 8847 df-gru 10810 |
| This theorem is referenced by: grumap 10827 |
| Copyright terms: Public domain | W3C validator |