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| Mirrors > Home > MPE Home > Th. List > Mathboxes > clsneifv4 | Structured version Visualization version GIF version | ||
| Description: Value of the closure (interior) function in terms of the neighborhoods (convergents) function. (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) |
| clsneifv.s | ⊢ (𝜑 → 𝑆 ∈ 𝒫 𝐵) |
| Ref | Expression |
|---|---|
| clsneifv4 | ⊢ (𝜑 → (𝐾‘𝑆) = {𝑥 ∈ 𝐵 ∣ ¬ (𝐵 ∖ 𝑆) ∈ (𝑁‘𝑥)}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfin5 3913 | . 2 ⊢ (𝐵 ∩ (𝐾‘𝑆)) = {𝑥 ∈ 𝐵 ∣ 𝑥 ∈ (𝐾‘𝑆)} | |
| 2 | clsnei.o | . . . . . . 7 ⊢ 𝑂 = (𝑖 ∈ V, 𝑗 ∈ V ↦ (𝑘 ∈ (𝒫 𝑗 ↑m 𝑖) ↦ (𝑙 ∈ 𝑗 ↦ {𝑚 ∈ 𝑖 ∣ 𝑙 ∈ (𝑘‘𝑚)}))) | |
| 3 | clsnei.p | . . . . . . 7 ⊢ 𝑃 = (𝑛 ∈ V ↦ (𝑝 ∈ (𝒫 𝑛 ↑m 𝒫 𝑛) ↦ (𝑜 ∈ 𝒫 𝑛 ↦ (𝑛 ∖ (𝑝‘(𝑛 ∖ 𝑜)))))) | |
| 4 | clsnei.d | . . . . . . 7 ⊢ 𝐷 = (𝑃‘𝐵) | |
| 5 | clsnei.f | . . . . . . 7 ⊢ 𝐹 = (𝒫 𝐵𝑂𝐵) | |
| 6 | clsnei.h | . . . . . . 7 ⊢ 𝐻 = (𝐹 ∘ 𝐷) | |
| 7 | clsnei.r | . . . . . . 7 ⊢ (𝜑 → 𝐾𝐻𝑁) | |
| 8 | 2, 3, 4, 5, 6, 7 | clsneikex 44079 | . . . . . 6 ⊢ (𝜑 → 𝐾 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵)) |
| 9 | elmapi 8783 | . . . . . 6 ⊢ (𝐾 ∈ (𝒫 𝐵 ↑m 𝒫 𝐵) → 𝐾:𝒫 𝐵⟶𝒫 𝐵) | |
| 10 | 8, 9 | syl 17 | . . . . 5 ⊢ (𝜑 → 𝐾:𝒫 𝐵⟶𝒫 𝐵) |
| 11 | clsneifv.s | . . . . 5 ⊢ (𝜑 → 𝑆 ∈ 𝒫 𝐵) | |
| 12 | 10, 11 | ffvelcdmd 7023 | . . . 4 ⊢ (𝜑 → (𝐾‘𝑆) ∈ 𝒫 𝐵) |
| 13 | 12 | elpwid 4562 | . . 3 ⊢ (𝜑 → (𝐾‘𝑆) ⊆ 𝐵) |
| 14 | sseqin2 4176 | . . 3 ⊢ ((𝐾‘𝑆) ⊆ 𝐵 ↔ (𝐵 ∩ (𝐾‘𝑆)) = (𝐾‘𝑆)) | |
| 15 | 13, 14 | sylib 218 | . 2 ⊢ (𝜑 → (𝐵 ∩ (𝐾‘𝑆)) = (𝐾‘𝑆)) |
| 16 | 7 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐾𝐻𝑁) |
| 17 | simpr 484 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ 𝐵) | |
| 18 | 11 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑆 ∈ 𝒫 𝐵) |
| 19 | 2, 3, 4, 5, 6, 16, 17, 18 | clsneiel1 44081 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ (𝐾‘𝑆) ↔ ¬ (𝐵 ∖ 𝑆) ∈ (𝑁‘𝑥))) |
| 20 | 19 | rabbidva 3403 | . 2 ⊢ (𝜑 → {𝑥 ∈ 𝐵 ∣ 𝑥 ∈ (𝐾‘𝑆)} = {𝑥 ∈ 𝐵 ∣ ¬ (𝐵 ∖ 𝑆) ∈ (𝑁‘𝑥)}) |
| 21 | 1, 15, 20 | 3eqtr3a 2788 | 1 ⊢ (𝜑 → (𝐾‘𝑆) = {𝑥 ∈ 𝐵 ∣ ¬ (𝐵 ∖ 𝑆) ∈ (𝑁‘𝑥)}) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 {crab 3396 Vcvv 3438 ∖ cdif 3902 ∩ cin 3904 ⊆ wss 3905 𝒫 cpw 4553 class class class wbr 5095 ↦ cmpt 5176 ∘ ccom 5627 ⟶wf 6482 ‘cfv 6486 (class class class)co 7353 ∈ cmpo 7355 ↑m cmap 8760 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7675 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-ov 7356 df-oprab 7357 df-mpo 7358 df-1st 7931 df-2nd 7932 df-map 8762 |
| This theorem is referenced by: (None) |
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