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| Mirrors > Home > MPE Home > Th. List > Mathboxes > tmachlem-tpitem | Structured version Visualization version GIF version | ||
| Description: Topology lemma. (Contributed by Ender Ting, 27-Jul-2026.) |
| Ref | Expression |
|---|---|
| tmach.finalph | ⊢ (𝜑 → 𝑈 ∈ Fin) |
| tmach.exindex | ⊢ (𝜑 → 𝐼 ∈ V) |
| tmach.tapelist | ⊢ (𝜑 → 𝑇 = (𝑈 ↑m 𝐼)) |
| tmach.scanmap | ⊢ (𝜑 → 𝑆:𝑇⟶(𝒫 𝐼 ∩ Fin)) |
| tmach.agreemap | ⊢ (𝜑 → 𝐴 = (𝑧 ∈ 𝑇 ↦ {𝑦 ∈ 𝑇 ∣ (𝑦 ↾ (𝑆‘𝑧)) = (𝑧 ↾ (𝑆‘𝑧))})) |
| tmach.agreement | ⊢ (𝜑 → ∀𝑧 ∈ 𝑇 ∀𝑦 ∈ (𝐴‘𝑧)(𝑆‘𝑦) = (𝑆‘𝑧)) |
| Ref | Expression |
|---|---|
| tmachlem-tpitem | ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐼) → ((𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)‘𝑎) = 𝒫 𝑈) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2760 | . 2 ⊢ (𝑖 ∈ 𝐼 ↦ 𝒫 𝑈) = (𝑖 ∈ 𝐼 ↦ 𝒫 𝑈) | |
| 2 | eqidd 2761 | . 2 ⊢ (𝑖 = 𝑎 → 𝒫 𝑈 = 𝒫 𝑈) | |
| 3 | simpr 490 | . 2 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐼) → 𝑎 ∈ 𝐼) | |
| 4 | tmach.finalph | . . . 4 ⊢ (𝜑 → 𝑈 ∈ Fin) | |
| 5 | 4 | pwexd 5340 | . . 3 ⊢ (𝜑 → 𝒫 𝑈 ∈ V) |
| 6 | 5 | adantr 486 | . 2 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐼) → 𝒫 𝑈 ∈ V) |
| 7 | 1, 2, 3, 6 | fvmptd3 7017 | 1 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐼) → ((𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)‘𝑎) = 𝒫 𝑈) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ∀wral 3076 {crab 3412 Vcvv 3450 ∩ cin 4089 𝒫 cpw 4556 ↦ cmpt 5185 ↾ cres 5652 ⟶wf 6534 ‘cfv 6538 (class class class)co 7420 ↑m cmap 8847 Fincfn 8973 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pow 5326 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-iota 6494 df-fun 6540 df-fv 6546 |
| This theorem is used by: tmachlem-tpopen 47951 |
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