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| Mirrors > Home > MPE Home > Th. List > grumap | Structured version Visualization version GIF version | ||
| Description: A Grothendieck universe contains all powers of its elements. (Contributed by Mario Carneiro, 9-Jun-2013.) |
| Ref | Expression |
|---|---|
| grumap | ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → (𝐴 ↑m 𝐵) ∈ 𝑈) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp1 1154 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → 𝑈 ∈ Univ) | |
| 2 | gruxp 10787 | . . . 4 ⊢ ((𝑈 ∈ Univ ∧ 𝐵 ∈ 𝑈 ∧ 𝐴 ∈ 𝑈) → (𝐵 × 𝐴) ∈ 𝑈) | |
| 3 | 2 | 3com23 1144 | . . 3 ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → (𝐵 × 𝐴) ∈ 𝑈) |
| 4 | grupw 10775 | . . 3 ⊢ ((𝑈 ∈ Univ ∧ (𝐵 × 𝐴) ∈ 𝑈) → 𝒫 (𝐵 × 𝐴) ∈ 𝑈) | |
| 5 | 1, 3, 4 | syl2anc 595 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → 𝒫 (𝐵 × 𝐴) ∈ 𝑈) |
| 6 | mapsspw 8872 | . . 3 ⊢ (𝐴 ↑m 𝐵) ⊆ 𝒫 (𝐵 × 𝐴) | |
| 7 | 6 | a1i 11 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → (𝐴 ↑m 𝐵) ⊆ 𝒫 (𝐵 × 𝐴)) |
| 8 | gruss 10776 | . 2 ⊢ ((𝑈 ∈ Univ ∧ 𝒫 (𝐵 × 𝐴) ∈ 𝑈 ∧ (𝐴 ↑m 𝐵) ⊆ 𝒫 (𝐵 × 𝐴)) → (𝐴 ↑m 𝐵) ∈ 𝑈) | |
| 9 | 1, 5, 7, 8 | syl3anc 1398 | 1 ⊢ ((𝑈 ∈ Univ ∧ 𝐴 ∈ 𝑈 ∧ 𝐵 ∈ 𝑈) → (𝐴 ↑m 𝐵) ∈ 𝑈) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1103 ∈ wcel 2143 ⊆ wss 3905 𝒫 cpw 4562 × cxp 5659 (class class class)co 7410 ↑m cmap 8820 Univcgru 10770 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-1st 7982 df-2nd 7983 df-map 8822 df-pm 8823 df-gru 10771 |
| This theorem is referenced by: gruixp 10789 |
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