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| Mirrors > Home > MPE Home > Th. List > Mathboxes > tmachlem-tpbase | Structured version Visualization version GIF version | ||
| Description: The base set of product topology of tapes is the set of tapes. (Contributed by Ender Ting, 28-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-tpbase | ⊢ (𝜑 → ∪ (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) = 𝑇) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tmach.exindex | . . 3 ⊢ (𝜑 → 𝐼 ∈ V) | |
| 2 | tmach.finalph | . . . . 5 ⊢ (𝜑 → 𝑈 ∈ Fin) | |
| 3 | distop 23252 | . . . . 5 ⊢ (𝑈 ∈ Fin → 𝒫 𝑈 ∈ Top) | |
| 4 | 2, 3 | syl 18 | . . . 4 ⊢ (𝜑 → 𝒫 𝑈 ∈ Top) |
| 5 | 4 | ralrimivw 3158 | . . 3 ⊢ (𝜑 → ∀𝑖 ∈ 𝐼 𝒫 𝑈 ∈ Top) |
| 6 | eqid 2760 | . . . 4 ⊢ (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) = (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) | |
| 7 | 6 | ptunimpt 23853 | . . 3 ⊢ ((𝐼 ∈ V ∧ ∀𝑖 ∈ 𝐼 𝒫 𝑈 ∈ Top) → X𝑖 ∈ 𝐼 ∪ 𝒫 𝑈 = ∪ (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈))) |
| 8 | 1, 5, 7 | syl2anc 596 | . 2 ⊢ (𝜑 → X𝑖 ∈ 𝐼 ∪ 𝒫 𝑈 = ∪ (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈))) |
| 9 | unipw 5425 | . . . . 5 ⊢ ∪ 𝒫 𝑈 = 𝑈 | |
| 10 | 9 | a1i 11 | . . . 4 ⊢ (𝜑 → ∪ 𝒫 𝑈 = 𝑈) |
| 11 | 10 | oveq1d 7431 | . . 3 ⊢ (𝜑 → (∪ 𝒫 𝑈 ↑m 𝐼) = (𝑈 ↑m 𝐼)) |
| 12 | 10, 2 | eqeltrd 2860 | . . . 4 ⊢ (𝜑 → ∪ 𝒫 𝑈 ∈ Fin) |
| 13 | ixpconstg 8920 | . . . 4 ⊢ ((𝐼 ∈ V ∧ ∪ 𝒫 𝑈 ∈ Fin) → X𝑖 ∈ 𝐼 ∪ 𝒫 𝑈 = (∪ 𝒫 𝑈 ↑m 𝐼)) | |
| 14 | 1, 12, 13 | syl2anc 596 | . . 3 ⊢ (𝜑 → X𝑖 ∈ 𝐼 ∪ 𝒫 𝑈 = (∪ 𝒫 𝑈 ↑m 𝐼)) |
| 15 | tmach.tapelist | . . 3 ⊢ (𝜑 → 𝑇 = (𝑈 ↑m 𝐼)) | |
| 16 | 11, 14, 15 | 3eqtr4d 2805 | . 2 ⊢ (𝜑 → X𝑖 ∈ 𝐼 ∪ 𝒫 𝑈 = 𝑇) |
| 17 | 8, 16 | eqtr3d 2797 | 1 ⊢ (𝜑 → ∪ (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) = 𝑇) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 ∀wral 3076 {crab 3412 Vcvv 3450 ∩ cin 3898 𝒫 cpw 4557 ∪ cuni 4867 ↦ cmpt 5186 ↾ cres 5657 ⟶wf 6531 ‘cfv 6535 (class class class)co 7416 ↑m cmap 8833 Xcixp 8911 Fincfn 8959 ∏tcpt 17548 Topctop 23150 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7742 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-ord 6362 df-on 6363 df-lim 6364 df-suc 6365 df-iota 6491 df-fun 6537 df-fn 6538 df-f 6539 df-f1 6540 df-fo 6541 df-f1o 6542 df-fv 6543 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7869 df-1o 8462 df-2o 8463 df-map 8835 df-ixp 8912 df-en 8960 df-fin 8963 df-fi 9388 df-topgen 17553 df-pt 17554 df-top 23151 df-bases 23203 |
| This theorem is used by: tmachlem-extpcover 47838 tmachlem-exagreecover 47839 |
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