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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 23340 | . . . . 5 ⊢ (𝑈 ∈ Fin → 𝒫 𝑈 ∈ Top) | |
| 4 | 2, 3 | syl 18 | . . . 4 ⊢ (𝜑 → 𝒫 𝑈 ∈ Top) |
| 5 | 4 | ralrimivw 3162 | . . 3 ⊢ (𝜑 → ∀𝑖 ∈ 𝐼 𝒫 𝑈 ∈ Top) |
| 6 | eqid 2763 | . . . 4 ⊢ (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) = (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) | |
| 7 | 6 | ptunimpt 23941 | . . 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 5422 | . . . . 5 ⊢ ∪ 𝒫 𝑈 = 𝑈 | |
| 10 | 9 | a1i 11 | . . . 4 ⊢ (𝜑 → ∪ 𝒫 𝑈 = 𝑈) |
| 11 | 10 | oveq1d 7455 | . . 3 ⊢ (𝜑 → (∪ 𝒫 𝑈 ↑m 𝐼) = (𝑈 ↑m 𝐼)) |
| 12 | 10, 2 | eqeltrd 2864 | . . . 4 ⊢ (𝜑 → ∪ 𝒫 𝑈 ∈ Fin) |
| 13 | ixpconstg 8959 | . . . 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 2808 | . 2 ⊢ (𝜑 → X𝑖 ∈ 𝐼 ∪ 𝒫 𝑈 = 𝑇) |
| 17 | 8, 16 | eqtr3d 2800 | 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 2147 ∀wral 3080 {crab 3416 Vcvv 3454 ∩ cin 4092 𝒫 cpw 4560 ∪ cuni 4870 ↦ cmpt 5189 ↾ cres 5657 ⟶wf 6551 ‘cfv 6555 (class class class)co 7440 ↑m cmap 8872 Xcixp 8950 Fincfn 8998 ∏tcpt 17635 Topctop 23238 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 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 6380 df-on 6381 df-lim 6382 df-suc 6383 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-ov 7443 df-oprab 7444 df-mpo 7445 df-om 7899 df-1o 8501 df-2o 8502 df-map 8874 df-ixp 8951 df-en 8999 df-fin 9002 df-fi 9427 df-topgen 17640 df-pt 17641 df-top 23239 df-bases 23291 |
| This theorem is used by: tmachlem-extpcover 48158 tmachlem-exagreecover 48159 |
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