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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 17232 | . . 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 10722 | . . 3 ⊢ (𝜑 → (𝑆 ↾ (V ∖ dom {𝐴})) ∈ 𝑈) |
| 7 | 5, 2 | wunsn 10707 | . . 3 ⊢ (𝜑 → {𝐴} ∈ 𝑈) |
| 8 | 5, 6, 7 | wunun 10701 | . 2 ⊢ (𝜑 → ((𝑆 ↾ (V ∖ dom {𝐴})) ∪ {𝐴}) ∈ 𝑈) |
| 9 | 4, 8 | eqeltrd 2862 | 1 ⊢ (𝜑 → (𝑆 sSet 𝐴) ∈ 𝑈) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2142 Vcvv 3454 ∖ cdif 3901 ∪ cun 3902 {csn 4588 dom cdm 5660 ↾ cres 5662 (class class class)co 7412 WUnicwun 10691 sSet csts 17229 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-pr 5403 ax-un 7734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-sbc 3744 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-tr 5218 df-id 5555 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-res 5672 df-iota 6492 df-fun 6538 df-fv 6544 df-ov 7415 df-oprab 7416 df-mpo 7417 df-wun 10693 df-sets 17230 |
| This theorem is used by: wunress 17315 catcoppccl 18180 |
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