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| Mirrors > Home > MPE Home > Th. List > Mathboxes > clsneikex | Structured version Visualization version GIF version | ||
| Description: If closure and neighborhoods functions are related, the closure function exists. (Contributed by RP, 27-Jun-2021.) |
| Ref | Expression |
|---|---|
| clsnei.o | ⊢ 𝑂 = (𝑖 ∈ V, 𝑗 ∈ V ↦ (𝑘 ∈ (𝒫 𝑗 ↑m 𝑖) ↦ (𝑙 ∈ 𝑗 ↦ {𝑚 ∈ 𝑖 ∣ 𝑙 ∈ (𝑘‘𝑚)}))) |
| clsnei.p | ⊢ 𝑃 = (𝑛 ∈ V ↦ (𝑝 ∈ (𝒫 𝑛 ↑m 𝒫 𝑛) ↦ (𝑜 ∈ 𝒫 𝑛 ↦ (𝑛 ∖ (𝑝‘(𝑛 ∖ 𝑜)))))) |
| clsnei.d | ⊢ 𝐷 = (𝑃‘𝐵) |
| clsnei.f | ⊢ 𝐹 = (𝒫 𝐵𝑂𝐵) |
| clsnei.h | ⊢ 𝐻 = (𝐹 ∘ 𝐷) |
| clsnei.r | ⊢ (𝜑 → 𝐾𝐻𝑁) |
| Ref | Expression |
|---|---|
| clsneikex | ⊢ (𝜑 → 𝐾 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | clsnei.p | . 2 ⊢ 𝑃 = (𝑛 ∈ V ↦ (𝑝 ∈ (𝒫 𝑛 ↑m 𝒫 𝑛) ↦ (𝑜 ∈ 𝒫 𝑛 ↦ (𝑛 ∖ (𝑝‘(𝑛 ∖ 𝑜)))))) | |
| 2 | clsnei.d | . 2 ⊢ 𝐷 = (𝑃‘𝐵) | |
| 3 | clsnei.h | . . . . 5 ⊢ 𝐻 = (𝐹 ∘ 𝐷) | |
| 4 | clsnei.r | . . . . 5 ⊢ (𝜑 → 𝐾𝐻𝑁) | |
| 5 | 2, 3, 4 | clsneibex 44209 | . . . 4 ⊢ (𝜑 → 𝐵 ∈ V) |
| 6 | clsnei.o | . . . . . . 7 ⊢ 𝑂 = (𝑖 ∈ V, 𝑗 ∈ V ↦ (𝑘 ∈ (𝒫 𝑗 ↑m 𝑖) ↦ (𝑙 ∈ 𝑗 ↦ {𝑚 ∈ 𝑖 ∣ 𝑙 ∈ (𝑘‘𝑚)}))) | |
| 7 | pwexg 5320 | . . . . . . . 8 ⊢ (𝐵 ∈ V → 𝒫 𝐵 ∈ V) | |
| 8 | 7 | adantl 481 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝒫 𝐵 ∈ V) |
| 9 | simpr 484 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝐵 ∈ V) | |
| 10 | clsnei.f | . . . . . . 7 ⊢ 𝐹 = (𝒫 𝐵𝑂𝐵) | |
| 11 | 6, 8, 9, 10 | fsovf1od 44123 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝐹:(𝒫 𝐵 ↑m 𝒫 𝐵)–1-1-onto→(𝒫 𝒫 𝐵 ↑m 𝐵)) |
| 12 | f1ofn 6772 | . . . . . 6 ⊢ (𝐹:(𝒫 𝐵 ↑m 𝒫 𝐵)–1-1-onto→(𝒫 𝒫 𝐵 ↑m 𝐵) → 𝐹 Fn (𝒫 𝐵 ↑m 𝒫 𝐵)) | |
| 13 | 11, 12 | syl 17 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝐹 Fn (𝒫 𝐵 ↑m 𝒫 𝐵)) |
| 14 | 1, 2, 9 | dssmapf1od 44128 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝐷:(𝒫 𝐵 ↑m 𝒫 𝐵)–1-1-onto→(𝒫 𝐵 ↑m 𝒫 𝐵)) |
| 15 | f1of 6771 | . . . . . 6 ⊢ (𝐷:(𝒫 𝐵 ↑m 𝒫 𝐵)–1-1-onto→(𝒫 𝐵 ↑m 𝒫 𝐵) → 𝐷:(𝒫 𝐵 ↑m 𝒫 𝐵)⟶(𝒫 𝐵 ↑m 𝒫 𝐵)) | |
| 16 | 14, 15 | syl 17 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝐷:(𝒫 𝐵 ↑m 𝒫 𝐵)⟶(𝒫 𝐵 ↑m 𝒫 𝐵)) |
| 17 | 4 | adantr 480 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝐾𝐻𝑁) |
| 18 | 3 | breqi 5101 | . . . . . 6 ⊢ (𝐾𝐻𝑁 ↔ 𝐾(𝐹 ∘ 𝐷)𝑁) |
| 19 | 17, 18 | sylib 218 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → 𝐾(𝐹 ∘ 𝐷)𝑁) |
| 20 | 13, 16, 19 | brcoffn 44137 | . . . 4 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → (𝐾𝐷(𝐷‘𝐾) ∧ (𝐷‘𝐾)𝐹𝑁)) |
| 21 | 5, 20 | mpdan 687 | . . 3 ⊢ (𝜑 → (𝐾𝐷(𝐷‘𝐾) ∧ (𝐷‘𝐾)𝐹𝑁)) |
| 22 | 21 | simpld 494 | . 2 ⊢ (𝜑 → 𝐾𝐷(𝐷‘𝐾)) |
| 23 | 1, 2, 22 | ntrclsiex 44160 | 1 ⊢ (𝜑 → 𝐾 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 {crab 3397 Vcvv 3438 ∖ cdif 3896 𝒫 cpw 4551 class class class wbr 5095 ↦ cmpt 5176 ∘ ccom 5625 Fn wfn 6484 ⟶wf 6485 –1-1-onto→wf1o 6488 ‘cfv 6489 (class class class)co 7355 ∈ cmpo 7357 ↑m cmap 8759 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7677 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4861 df-iun 4945 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-ov 7358 df-oprab 7359 df-mpo 7360 df-1st 7930 df-2nd 7931 df-map 8761 |
| This theorem is referenced by: clsneifv4 44218 |
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