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| Mirrors > Home > MPE Home > Th. List > wunsets | Structured version Visualization version GIF version | ||
| Description: Closure of structure replacement in a weak universe. (Contributed by Mario Carneiro, 12-Jan-2017.) |
| Ref | Expression |
|---|---|
| wunsets.1 | ⊢ (𝜑 → 𝑈 ∈ WUni) |
| wunsets.2 | ⊢ (𝜑 → 𝑆 ∈ 𝑈) |
| wunsets.3 | ⊢ (𝜑 → 𝐴 ∈ 𝑈) |
| Ref | Expression |
|---|---|
| wunsets | ⊢ (𝜑 → (𝑆 sSet 𝐴) ∈ 𝑈) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wunsets.2 | . . 3 ⊢ (𝜑 → 𝑆 ∈ 𝑈) | |
| 2 | wunsets.3 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑈) | |
| 3 | setsvalg 17221 | . . 3 ⊢ ((𝑆 ∈ 𝑈 ∧ 𝐴 ∈ 𝑈) → (𝑆 sSet 𝐴) = ((𝑆 ↾ (V ∖ dom {𝐴})) ∪ {𝐴})) | |
| 4 | 1, 2, 3 | syl2anc 595 | . 2 ⊢ (𝜑 → (𝑆 sSet 𝐴) = ((𝑆 ↾ (V ∖ dom {𝐴})) ∪ {𝐴})) |
| 5 | wunsets.1 | . . 3 ⊢ (𝜑 → 𝑈 ∈ WUni) | |
| 6 | 5, 1 | wunres 10711 | . . 3 ⊢ (𝜑 → (𝑆 ↾ (V ∖ dom {𝐴})) ∈ 𝑈) |
| 7 | 5, 2 | wunsn 10696 | . . 3 ⊢ (𝜑 → {𝐴} ∈ 𝑈) |
| 8 | 5, 6, 7 | wunun 10690 | . 2 ⊢ (𝜑 → ((𝑆 ↾ (V ∖ dom {𝐴})) ∪ {𝐴}) ∈ 𝑈) |
| 9 | 4, 8 | eqeltrd 2863 | 1 ⊢ (𝜑 → (𝑆 sSet 𝐴) ∈ 𝑈) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 Vcvv 3455 ∖ cdif 3902 ∪ cun 3903 {csn 4589 dom cdm 5661 ↾ cres 5663 (class class class)co 7410 WUnicwun 10680 sSet csts 17218 |
| 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-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-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-br 5110 df-opab 5174 df-tr 5219 df-id 5556 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-res 5673 df-iota 6492 df-fun 6538 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-wun 10682 df-sets 17219 |
| This theorem is referenced by: wunress 17304 catcoppccl 18169 |
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