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Theorem clsneikex 44873
Description: If closure and neighborhoods functions are related, the closure function exists. (Contributed by RP, 27-Jun-2021.)
Hypotheses
Ref Expression
clsnei.o 𝑂 = (𝑖 ∈ V, 𝑗 ∈ V ↦ (𝑘 ∈ (𝒫 𝑗m 𝑖) ↦ (𝑙𝑗 ↦ {𝑚𝑖𝑙 ∈ (𝑘𝑚)})))
clsnei.p 𝑃 = (𝑛 ∈ V ↦ (𝑝 ∈ (𝒫 𝑛m 𝒫 𝑛) ↦ (𝑜 ∈ 𝒫 𝑛 ↦ (𝑛 ∖ (𝑝‘(𝑛𝑜))))))
clsnei.d 𝐷 = (𝑃𝐵)
clsnei.f 𝐹 = (𝒫 𝐵𝑂𝐵)
clsnei.h 𝐻 = (𝐹𝐷)
clsnei.r (𝜑𝐾𝐻𝑁)
Assertion
Ref Expression
clsneikex (𝜑𝐾 ∈ (𝒫 𝐵m 𝒫 𝐵))
Distinct variable groups:   𝐵,𝑖,𝑗,𝑘,𝑙,𝑚   𝐵,𝑛,𝑜,𝑝   𝜑,𝑖,𝑗,𝑘,𝑙   𝜑,𝑛,𝑜,𝑝
Allowed substitution hints:   𝜑(𝑚)   𝐷(𝑖, 𝑗, 𝑘, 𝑚, 𝑛, 𝑜, 𝑝, 𝑙)   𝑃(𝑖, 𝑗, 𝑘, 𝑚, 𝑛, 𝑜, 𝑝, 𝑙)   𝐹(𝑖, 𝑗, 𝑘, 𝑚, 𝑛, 𝑜, 𝑝, 𝑙)   𝐻(𝑖, 𝑗, 𝑘, 𝑚, 𝑛, 𝑜, 𝑝, 𝑙)   𝐾(𝑖, 𝑗, 𝑘, 𝑚, 𝑛, 𝑜, 𝑝, 𝑙)   𝑁(𝑖, 𝑗, 𝑘, 𝑚, 𝑛, 𝑜, 𝑝, 𝑙)   𝑂(𝑖, 𝑗, 𝑘, 𝑚, 𝑛, 𝑜, 𝑝, 𝑙)

Proof of Theorem clsneikex
StepHypRef Expression
1 clsnei.p . 2 𝑃 = (𝑛 ∈ V ↦ (𝑝 ∈ (𝒫 𝑛m 𝒫 𝑛) ↦ (𝑜 ∈ 𝒫 𝑛 ↦ (𝑛 ∖ (𝑝‘(𝑛𝑜))))))
2 clsnei.d . 2 𝐷 = (𝑃𝐵)
3 clsnei.h . . . . 5 𝐻 = (𝐹𝐷)
4 clsnei.r . . . . 5 (𝜑𝐾𝐻𝑁)
52, 3, 4clsneibex 44869 . . . 4 (𝜑𝐵 ∈ V)
6 clsnei.o . . . . . . 7 𝑂 = (𝑖 ∈ V, 𝑗 ∈ V ↦ (𝑘 ∈ (𝒫 𝑗m 𝑖) ↦ (𝑙𝑗 ↦ {𝑚𝑖𝑙 ∈ (𝑘𝑚)})))
7 pwexg 5354 . . . . . . . 8 (𝐵 ∈ V → 𝒫 𝐵 ∈ V)
87adantl 487 . . . . . . 7 ((𝜑𝐵 ∈ V) → 𝒫 𝐵 ∈ V)
9 simpr 490 . . . . . . 7 ((𝜑𝐵 ∈ V) → 𝐵 ∈ V)
10 clsnei.f . . . . . . 7 𝐹 = (𝒫 𝐵𝑂𝐵)
116, 8, 9, 10fsovf1od 44783 . . . . . 6 ((𝜑𝐵 ∈ V) → 𝐹:(𝒫 𝐵m 𝒫 𝐵)–1-1-onto→(𝒫 𝒫 𝐵m 𝐵))
12 f1ofn 6828 . . . . . 6 (𝐹:(𝒫 𝐵m 𝒫 𝐵)–1-1-onto→(𝒫 𝒫 𝐵m 𝐵) → 𝐹 Fn (𝒫 𝐵m 𝒫 𝐵))
1311, 12syl 18 . . . . 5 ((𝜑𝐵 ∈ V) → 𝐹 Fn (𝒫 𝐵m 𝒫 𝐵))
141, 2, 9dssmapf1od 44788 . . . . . 6 ((𝜑𝐵 ∈ V) → 𝐷:(𝒫 𝐵m 𝒫 𝐵)–1-1-onto→(𝒫 𝐵m 𝒫 𝐵))
15 f1of 6827 . . . . . 6 (𝐷:(𝒫 𝐵m 𝒫 𝐵)–1-1-onto→(𝒫 𝐵m 𝒫 𝐵) → 𝐷:(𝒫 𝐵m 𝒫 𝐵)⟶(𝒫 𝐵m 𝒫 𝐵))
1614, 15syl 18 . . . . 5 ((𝜑𝐵 ∈ V) → 𝐷:(𝒫 𝐵m 𝒫 𝐵)⟶(𝒫 𝐵m 𝒫 𝐵))
174adantr 486 . . . . . 6 ((𝜑𝐵 ∈ V) → 𝐾𝐻𝑁)
183breqi 5120 . . . . . 6 (𝐾𝐻𝑁𝐾(𝐹𝐷)𝑁)
1917, 18sylib 221 . . . . 5 ((𝜑𝐵 ∈ V) → 𝐾(𝐹𝐷)𝑁)
2013, 16, 19brcoffn 44797 . . . 4 ((𝜑𝐵 ∈ V) → (𝐾𝐷(𝐷𝐾) ∧ (𝐷𝐾)𝐹𝑁))
215, 20mpdan 700 . . 3 (𝜑 → (𝐾𝐷(𝐷𝐾) ∧ (𝐷𝐾)𝐹𝑁))
2221simpld 500 . 2 (𝜑𝐾𝐷(𝐷𝐾))
231, 2, 22ntrclsiex 44820 1 (𝜑𝐾 ∈ (𝒫 𝐵m 𝒫 𝐵))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 401   = wceq 1570  wcel 2146  {crab 3419  Vcvv 3458  cdif 3905  𝒫 cpw 4567   class class class wbr 5114  cmpt 5197  ccom 5670   Fn wfn 6538  wf 6539  1-1-ontowf1o 6542  cfv 6543  (class class class)co 7423  cmpo 7425  m cmap 8833
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 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2738  ax-rep 5243  ax-sep 5262  ax-nul 5274  ax-pow 5341  ax-pr 5409  ax-un 7745
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2570  df-eu 2600  df-clab 2745  df-cleq 2758  df-clel 2841  df-nfc 2915  df-ne 2962  df-ral 3083  df-rex 3093  df-reu 3373  df-rab 3420  df-v 3460  df-sbc 3748  df-csb 3857  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-nul 4290  df-if 4493  df-pw 4569  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4878  df-iun 4963  df-br 5115  df-opab 5179  df-mpt 5198  df-id 5561  df-xp 5672  df-rel 5673  df-cnv 5674  df-co 5675  df-dm 5676  df-rn 5677  df-res 5678  df-ima 5679  df-iota 6499  df-fun 6545  df-fn 6546  df-f 6547  df-f1 6548  df-fo 6549  df-f1o 6550  df-fv 6551  df-ov 7426  df-oprab 7427  df-mpo 7428  df-1st 7995  df-2nd 7996  df-map 8835
This theorem is used by:  clsneifv4  44878
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