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Theorem tmachlem-tpitem 47950
Description: Topology lemma. (Contributed by Ender Ting, 27-Jul-2026.)
Hypotheses
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))
Assertion
Ref Expression
tmachlem-tpitem ((𝜑 ∧ 𝑎 ∈ 𝐼) → ((𝑖 ∈ 𝐼 ↦ 𝒫 𝑈)‘𝑎) = 𝒫 𝑈)
Distinct variable groups:   𝑈,𝑎,𝑖,𝑦,𝑧   𝐼,𝑎,𝑖,𝑦,𝑧   𝜑,𝑎,𝑖,𝑦,𝑧   𝑆,𝑎,𝑖,𝑦,𝑧   𝐴,𝑎,𝑖,𝑦,𝑧   𝑇,𝑎,𝑖,𝑦,𝑧

Proof of Theorem tmachlem-tpitem
StepHypRef 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)
54pwexd 5340 . . 3 (𝜑 → 𝒫 𝑈 ∈ V)
65adantr 486 . 2 ((𝜑 ∧ 𝑎 ∈ 𝐼) → 𝒫 𝑈 ∈ V)
71, 2, 3, 6fvmptd3 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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