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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 23219 | . . . . 5 ⊢ (𝑈 ∈ Fin → 𝒫 𝑈 ∈ Top) | |
| 4 | 2, 3 | syl 18 | . . . 4 ⊢ (𝜑 → 𝒫 𝑈 ∈ Top) |
| 5 | 4 | ralrimivw 3160 | . . 3 ⊢ (𝜑 → ∀𝑖 ∈ 𝐼 𝒫 𝑈 ∈ Top) |
| 6 | eqid 2762 | . . . 4 ⊢ (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) = (∏t‘(𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)) | |
| 7 | 6 | ptunimpt 23820 | . . 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 5429 | . . . . 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 2862 | . . . 4 ⊢ (𝜑 → ∪ 𝒫 𝑈 ∈ Fin) |
| 13 | ixpconstg 8916 | . . . 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 2807 | . 2 ⊢ (𝜑 → X𝑖 ∈ 𝐼 ∪ 𝒫 𝑈 = 𝑇) |
| 17 | 8, 16 | eqtr3d 2799 | 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 3078 {crab 3414 Vcvv 3453 ∩ cin 3901 𝒫 cpw 4560 ∪ cuni 4870 ↦ cmpt 5190 ↾ cres 5661 ⟶wf 6533 ‘cfv 6537 (class class class)co 7416 ↑m cmap 8829 Xcixp 8907 Fincfn 8955 ∏tcpt 17525 Topctop 23117 |
| 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 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 |
| 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 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-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-int 4911 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7866 df-1o 8458 df-2o 8459 df-map 8831 df-ixp 8908 df-en 8956 df-fin 8959 df-fi 9384 df-topgen 17530 df-pt 17531 df-top 23118 df-bases 23170 |
| This theorem is used by: tmachlem-extpcover 47758 tmachlem-exagreecover 47759 |
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