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| Mirrors > Home > MPE Home > Th. List > Mathboxes > setsv | Structured version Visualization version GIF version | ||
| Description: The value of the structure replacement function is a set. (Contributed by AV, 10-Nov-2021.) |
| Ref | Expression |
|---|---|
| setsv | ⊢ ((𝑆 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝑆 sSet 〈𝐴, 𝐵〉) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | setsval 17249 | . 2 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝑆 sSet 〈𝐴, 𝐵〉) = ((𝑆 ↾ (V ∖ {𝐴})) ∪ {〈𝐴, 𝐵〉})) | |
| 2 | resexg 6028 | . . 3 ⊢ (𝑆 ∈ 𝑉 → (𝑆 ↾ (V ∖ {𝐴})) ∈ V) | |
| 3 | snex 5412 | . . . 4 ⊢ {〈𝐴, 𝐵〉} ∈ V | |
| 4 | 3 | a1i 11 | . . 3 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → {〈𝐴, 𝐵〉} ∈ V) |
| 5 | unexg 7751 | . . 3 ⊢ (((𝑆 ↾ (V ∖ {𝐴})) ∈ V ∧ {〈𝐴, 𝐵〉} ∈ V) → ((𝑆 ↾ (V ∖ {𝐴})) ∪ {〈𝐴, 𝐵〉}) ∈ V) | |
| 6 | 2, 4, 5 | syl2an2r 698 | . 2 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → ((𝑆 ↾ (V ∖ {𝐴})) ∪ {〈𝐴, 𝐵〉}) ∈ V) |
| 7 | 1, 6 | eqeltrd 2865 | 1 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝑆 sSet 〈𝐴, 𝐵〉) ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2146 Vcvv 3457 ∖ cdif 3903 ∪ cun 3904 {csn 4591 〈cop 4597 ↾ cres 5665 (class class class)co 7419 sSet csts 17245 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-pr 5406 ax-un 7742 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-sbc 3747 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-res 5675 df-iota 6496 df-fun 6542 df-fv 6548 df-ov 7422 df-oprab 7423 df-mpo 7424 df-sets 17246 |
| This theorem is used by: (None) |
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