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Theorem cnllycmp 22494
Description: The topology on the complex numbers is locally compact. (Contributed by Mario Carneiro, 2-Mar-2015.)
Hypothesis
Ref Expression
cnllycmp.1 𝐽 = (TopOpen‘ℂfld)
Assertion
Ref Expression
cnllycmp 𝐽 ∈ 𝑛-Locally Comp

Proof of Theorem cnllycmp
Dummy variables 𝑠 𝑟 𝑢 𝑤 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 cnllycmp.1 . . 3 𝐽 = (TopOpen‘ℂfld)
21cnfldtop 22329 . 2 𝐽 ∈ Top
3 cnxmet 22318 . . . . 5 (abs ∘ − ) ∈ (∞Met‘ℂ)
41cnfldtopn 22327 . . . . . 6 𝐽 = (MetOpen‘(abs ∘ − ))
54mopni2 22049 . . . . 5 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑥𝐽𝑦𝑥) → ∃𝑟 ∈ ℝ+ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)
63, 5mp3an1 1402 . . . 4 ((𝑥𝐽𝑦𝑥) → ∃𝑟 ∈ ℝ+ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)
72a1i 11 . . . . . . 7 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝐽 ∈ Top)
83a1i 11 . . . . . . . . 9 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (abs ∘ − ) ∈ (∞Met‘ℂ))
9 elssuni 4397 . . . . . . . . . . . 12 (𝑥𝐽𝑥 𝐽)
109ad2antrr 757 . . . . . . . . . . 11 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑥 𝐽)
111cnfldtopon 22328 . . . . . . . . . . . 12 𝐽 ∈ (TopOn‘ℂ)
1211toponunii 20489 . . . . . . . . . . 11 ℂ = 𝐽
1310, 12syl6sseqr 3614 . . . . . . . . . 10 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑥 ⊆ ℂ)
14 simplr 787 . . . . . . . . . 10 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑦𝑥)
1513, 14sseldd 3568 . . . . . . . . 9 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑦 ∈ ℂ)
16 rphalfcl 11690 . . . . . . . . . . 11 (𝑟 ∈ ℝ+ → (𝑟 / 2) ∈ ℝ+)
1716ad2antrl 759 . . . . . . . . . 10 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑟 / 2) ∈ ℝ+)
1817rpxrd 11705 . . . . . . . . 9 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑟 / 2) ∈ ℝ*)
194blopn 22056 . . . . . . . . 9 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑦 ∈ ℂ ∧ (𝑟 / 2) ∈ ℝ*) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ∈ 𝐽)
208, 15, 18, 19syl3anc 1317 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ∈ 𝐽)
21 blcntr 21969 . . . . . . . . 9 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑦 ∈ ℂ ∧ (𝑟 / 2) ∈ ℝ+) → 𝑦 ∈ (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))
228, 15, 17, 21syl3anc 1317 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑦 ∈ (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))
23 opnneip 20675 . . . . . . . 8 ((𝐽 ∈ Top ∧ (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ∈ 𝐽𝑦 ∈ (𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ∈ ((nei‘𝐽)‘{𝑦}))
247, 20, 22, 23syl3anc 1317 . . . . . . 7 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ∈ ((nei‘𝐽)‘{𝑦}))
25 blssm 21974 . . . . . . . . 9 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑦 ∈ ℂ ∧ (𝑟 / 2) ∈ ℝ*) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ⊆ ℂ)
268, 15, 18, 25syl3anc 1317 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ⊆ ℂ)
2712sscls 20612 . . . . . . . 8 ((𝐽 ∈ Top ∧ (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ⊆ ℂ) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ⊆ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))))
287, 26, 27syl2anc 690 . . . . . . 7 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ⊆ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))))
29 rpxr 11672 . . . . . . . . . . 11 (𝑟 ∈ ℝ+𝑟 ∈ ℝ*)
3029ad2antrl 759 . . . . . . . . . 10 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → 𝑟 ∈ ℝ*)
31 rphalflt 11692 . . . . . . . . . . 11 (𝑟 ∈ ℝ+ → (𝑟 / 2) < 𝑟)
3231ad2antrl 759 . . . . . . . . . 10 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑟 / 2) < 𝑟)
334blsscls 22063 . . . . . . . . . 10 ((((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑦 ∈ ℂ) ∧ ((𝑟 / 2) ∈ ℝ*𝑟 ∈ ℝ* ∧ (𝑟 / 2) < 𝑟)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ (𝑦(ball‘(abs ∘ − ))𝑟))
348, 15, 18, 30, 32, 33syl23anc 1324 . . . . . . . . 9 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ (𝑦(ball‘(abs ∘ − ))𝑟))
35 simprr 791 . . . . . . . . 9 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)
3634, 35sstrd 3577 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ 𝑥)
3736, 13sstrd 3577 . . . . . . 7 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ ℂ)
3812ssnei2 20672 . . . . . . 7 (((𝐽 ∈ Top ∧ (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ∈ ((nei‘𝐽)‘{𝑦})) ∧ ((𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ⊆ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∧ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ ℂ)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ ((nei‘𝐽)‘{𝑦}))
397, 24, 28, 37, 38syl22anc 1318 . . . . . 6 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ ((nei‘𝐽)‘{𝑦}))
40 vex 3175 . . . . . . . 8 𝑥 ∈ V
4140elpw2 4750 . . . . . . 7 (((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ 𝒫 𝑥 ↔ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ 𝑥)
4236, 41sylibr 222 . . . . . 6 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ 𝒫 𝑥)
4339, 42elind 3759 . . . . 5 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ (((nei‘𝐽)‘{𝑦}) ∩ 𝒫 𝑥))
4412clscld 20603 . . . . . . 7 ((𝐽 ∈ Top ∧ (𝑦(ball‘(abs ∘ − ))(𝑟 / 2)) ⊆ ℂ) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ (Clsd‘𝐽))
457, 26, 44syl2anc 690 . . . . . 6 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ (Clsd‘𝐽))
4615abscld 13969 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (abs‘𝑦) ∈ ℝ)
4717rpred 11704 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝑟 / 2) ∈ ℝ)
4846, 47readdcld 9925 . . . . . . 7 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((abs‘𝑦) + (𝑟 / 2)) ∈ ℝ)
49 eqid 2609 . . . . . . . . . 10 {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)} = {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)}
504, 49blcls 22062 . . . . . . . . 9 (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑦 ∈ ℂ ∧ (𝑟 / 2) ∈ ℝ*) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)})
518, 15, 18, 50syl3anc 1317 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)})
52 simpr 475 . . . . . . . . . . . . 13 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → 𝑧 ∈ ℂ)
5315adantr 479 . . . . . . . . . . . . 13 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → 𝑦 ∈ ℂ)
5452, 53abs2difd 13990 . . . . . . . . . . . 12 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → ((abs‘𝑧) − (abs‘𝑦)) ≤ (abs‘(𝑧𝑦)))
5552abscld 13969 . . . . . . . . . . . . . 14 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (abs‘𝑧) ∈ ℝ)
5646adantr 479 . . . . . . . . . . . . . 14 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (abs‘𝑦) ∈ ℝ)
5755, 56resubcld 10309 . . . . . . . . . . . . 13 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → ((abs‘𝑧) − (abs‘𝑦)) ∈ ℝ)
5852, 53subcld 10243 . . . . . . . . . . . . . 14 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (𝑧𝑦) ∈ ℂ)
5958abscld 13969 . . . . . . . . . . . . 13 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (abs‘(𝑧𝑦)) ∈ ℝ)
6047adantr 479 . . . . . . . . . . . . 13 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (𝑟 / 2) ∈ ℝ)
61 letr 9982 . . . . . . . . . . . . 13 ((((abs‘𝑧) − (abs‘𝑦)) ∈ ℝ ∧ (abs‘(𝑧𝑦)) ∈ ℝ ∧ (𝑟 / 2) ∈ ℝ) → ((((abs‘𝑧) − (abs‘𝑦)) ≤ (abs‘(𝑧𝑦)) ∧ (abs‘(𝑧𝑦)) ≤ (𝑟 / 2)) → ((abs‘𝑧) − (abs‘𝑦)) ≤ (𝑟 / 2)))
6257, 59, 60, 61syl3anc 1317 . . . . . . . . . . . 12 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → ((((abs‘𝑧) − (abs‘𝑦)) ≤ (abs‘(𝑧𝑦)) ∧ (abs‘(𝑧𝑦)) ≤ (𝑟 / 2)) → ((abs‘𝑧) − (abs‘𝑦)) ≤ (𝑟 / 2)))
6354, 62mpand 706 . . . . . . . . . . 11 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → ((abs‘(𝑧𝑦)) ≤ (𝑟 / 2) → ((abs‘𝑧) − (abs‘𝑦)) ≤ (𝑟 / 2)))
6452, 53abssubd 13986 . . . . . . . . . . . . 13 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (abs‘(𝑧𝑦)) = (abs‘(𝑦𝑧)))
65 eqid 2609 . . . . . . . . . . . . . . 15 (abs ∘ − ) = (abs ∘ − )
6665cnmetdval 22316 . . . . . . . . . . . . . 14 ((𝑦 ∈ ℂ ∧ 𝑧 ∈ ℂ) → (𝑦(abs ∘ − )𝑧) = (abs‘(𝑦𝑧)))
6715, 66sylan 486 . . . . . . . . . . . . 13 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (𝑦(abs ∘ − )𝑧) = (abs‘(𝑦𝑧)))
6864, 67eqtr4d 2646 . . . . . . . . . . . 12 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (abs‘(𝑧𝑦)) = (𝑦(abs ∘ − )𝑧))
6968breq1d 4587 . . . . . . . . . . 11 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → ((abs‘(𝑧𝑦)) ≤ (𝑟 / 2) ↔ (𝑦(abs ∘ − )𝑧) ≤ (𝑟 / 2)))
7055, 56, 60lesubadd2d 10475 . . . . . . . . . . 11 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → (((abs‘𝑧) − (abs‘𝑦)) ≤ (𝑟 / 2) ↔ (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))))
7163, 69, 703imtr3d 280 . . . . . . . . . 10 ((((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) ∧ 𝑧 ∈ ℂ) → ((𝑦(abs ∘ − )𝑧) ≤ (𝑟 / 2) → (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))))
7271ralrimiva 2948 . . . . . . . . 9 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ∀𝑧 ∈ ℂ ((𝑦(abs ∘ − )𝑧) ≤ (𝑟 / 2) → (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))))
73 oveq2 6535 . . . . . . . . . . 11 (𝑤 = 𝑧 → (𝑦(abs ∘ − )𝑤) = (𝑦(abs ∘ − )𝑧))
7473breq1d 4587 . . . . . . . . . 10 (𝑤 = 𝑧 → ((𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2) ↔ (𝑦(abs ∘ − )𝑧) ≤ (𝑟 / 2)))
7574ralrab 3334 . . . . . . . . 9 (∀𝑧 ∈ {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)} (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2)) ↔ ∀𝑧 ∈ ℂ ((𝑦(abs ∘ − )𝑧) ≤ (𝑟 / 2) → (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))))
7672, 75sylibr 222 . . . . . . . 8 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ∀𝑧 ∈ {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)} (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2)))
77 ssralv 3628 . . . . . . . 8 (((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)} → (∀𝑧 ∈ {𝑤 ∈ ℂ ∣ (𝑦(abs ∘ − )𝑤) ≤ (𝑟 / 2)} (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2)) → ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))))
7851, 76, 77sylc 62 . . . . . . 7 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2)))
79 breq2 4581 . . . . . . . . 9 (𝑠 = ((abs‘𝑦) + (𝑟 / 2)) → ((abs‘𝑧) ≤ 𝑠 ↔ (abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))))
8079ralbidv 2968 . . . . . . . 8 (𝑠 = ((abs‘𝑦) + (𝑟 / 2)) → (∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ 𝑠 ↔ ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))))
8180rspcev 3281 . . . . . . 7 ((((abs‘𝑦) + (𝑟 / 2)) ∈ ℝ ∧ ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ ((abs‘𝑦) + (𝑟 / 2))) → ∃𝑠 ∈ ℝ ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ 𝑠)
8248, 78, 81syl2anc 690 . . . . . 6 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ∃𝑠 ∈ ℝ ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ 𝑠)
83 eqid 2609 . . . . . . . 8 (𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))) = (𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))))
841, 83cnheibor 22493 . . . . . . 7 (((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ⊆ ℂ → ((𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))) ∈ Comp ↔ (((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ (Clsd‘𝐽) ∧ ∃𝑠 ∈ ℝ ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ 𝑠)))
8537, 84syl 17 . . . . . 6 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ((𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))) ∈ Comp ↔ (((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ (Clsd‘𝐽) ∧ ∃𝑠 ∈ ℝ ∀𝑧 ∈ ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))(abs‘𝑧) ≤ 𝑠)))
8645, 82, 85mpbir2and 958 . . . . 5 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → (𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))) ∈ Comp)
87 oveq2 6535 . . . . . . 7 (𝑢 = ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) → (𝐽t 𝑢) = (𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))))
8887eleq1d 2671 . . . . . 6 (𝑢 = ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) → ((𝐽t 𝑢) ∈ Comp ↔ (𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))) ∈ Comp))
8988rspcev 3281 . . . . 5 ((((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2))) ∈ (((nei‘𝐽)‘{𝑦}) ∩ 𝒫 𝑥) ∧ (𝐽t ((cls‘𝐽)‘(𝑦(ball‘(abs ∘ − ))(𝑟 / 2)))) ∈ Comp) → ∃𝑢 ∈ (((nei‘𝐽)‘{𝑦}) ∩ 𝒫 𝑥)(𝐽t 𝑢) ∈ Comp)
9043, 86, 89syl2anc 690 . . . 4 (((𝑥𝐽𝑦𝑥) ∧ (𝑟 ∈ ℝ+ ∧ (𝑦(ball‘(abs ∘ − ))𝑟) ⊆ 𝑥)) → ∃𝑢 ∈ (((nei‘𝐽)‘{𝑦}) ∩ 𝒫 𝑥)(𝐽t 𝑢) ∈ Comp)
916, 90rexlimddv 3016 . . 3 ((𝑥𝐽𝑦𝑥) → ∃𝑢 ∈ (((nei‘𝐽)‘{𝑦}) ∩ 𝒫 𝑥)(𝐽t 𝑢) ∈ Comp)
9291rgen2 2957 . 2 𝑥𝐽𝑦𝑥𝑢 ∈ (((nei‘𝐽)‘{𝑦}) ∩ 𝒫 𝑥)(𝐽t 𝑢) ∈ Comp
93 isnlly 21024 . 2 (𝐽 ∈ 𝑛-Locally Comp ↔ (𝐽 ∈ Top ∧ ∀𝑥𝐽𝑦𝑥𝑢 ∈ (((nei‘𝐽)‘{𝑦}) ∩ 𝒫 𝑥)(𝐽t 𝑢) ∈ Comp))
942, 92, 93mpbir2an 956 1 𝐽 ∈ 𝑛-Locally Comp
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 194  wa 382   = wceq 1474  wcel 1976  wral 2895  wrex 2896  {crab 2899  cin 3538  wss 3539  𝒫 cpw 4107  {csn 4124   cuni 4366   class class class wbr 4577  ccom 5032  cfv 5790  (class class class)co 6527  cc 9790  cr 9791   + caddc 9795  *cxr 9929   < clt 9930  cle 9931  cmin 10117   / cdiv 10533  2c2 10917  +crp 11664  abscabs 13768  t crest 15850  TopOpenctopn 15851  ∞Metcxmt 19498  ballcbl 19500  fldccnfld 19513  Topctop 20459  Clsdccld 20572  clsccl 20574  neicnei 20653  Compccmp 20941  𝑛-Locally cnlly 21020
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2032  ax-13 2232  ax-ext 2589  ax-rep 4693  ax-sep 4703  ax-nul 4712  ax-pow 4764  ax-pr 4828  ax-un 6824  ax-inf2 8398  ax-cnex 9848  ax-resscn 9849  ax-1cn 9850  ax-icn 9851  ax-addcl 9852  ax-addrcl 9853  ax-mulcl 9854  ax-mulrcl 9855  ax-mulcom 9856  ax-addass 9857  ax-mulass 9858  ax-distr 9859  ax-i2m1 9860  ax-1ne0 9861  ax-1rid 9862  ax-rnegex 9863  ax-rrecex 9864  ax-cnre 9865  ax-pre-lttri 9866  ax-pre-lttrn 9867  ax-pre-ltadd 9868  ax-pre-mulgt0 9869  ax-pre-sup 9870  ax-addf 9871  ax-mulf 9872
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1700  df-sb 1867  df-eu 2461  df-mo 2462  df-clab 2596  df-cleq 2602  df-clel 2605  df-nfc 2739  df-ne 2781  df-nel 2782  df-ral 2900  df-rex 2901  df-reu 2902  df-rmo 2903  df-rab 2904  df-v 3174  df-sbc 3402  df-csb 3499  df-dif 3542  df-un 3544  df-in 3546  df-ss 3553  df-pss 3555  df-nul 3874  df-if 4036  df-pw 4109  df-sn 4125  df-pr 4127  df-tp 4129  df-op 4131  df-uni 4367  df-int 4405  df-iun 4451  df-iin 4452  df-br 4578  df-opab 4638  df-mpt 4639  df-tr 4675  df-eprel 4939  df-id 4943  df-po 4949  df-so 4950  df-fr 4987  df-se 4988  df-we 4989  df-xp 5034  df-rel 5035  df-cnv 5036  df-co 5037  df-dm 5038  df-rn 5039  df-res 5040  df-ima 5041  df-pred 5583  df-ord 5629  df-on 5630  df-lim 5631  df-suc 5632  df-iota 5754  df-fun 5792  df-fn 5793  df-f 5794  df-f1 5795  df-fo 5796  df-f1o 5797  df-fv 5798  df-isom 5799  df-riota 6489  df-ov 6530  df-oprab 6531  df-mpt2 6532  df-of 6772  df-om 6935  df-1st 7036  df-2nd 7037  df-supp 7160  df-wrecs 7271  df-recs 7332  df-rdg 7370  df-1o 7424  df-2o 7425  df-oadd 7428  df-er 7606  df-map 7723  df-ixp 7772  df-en 7819  df-dom 7820  df-sdom 7821  df-fin 7822  df-fsupp 8136  df-fi 8177  df-sup 8208  df-inf 8209  df-oi 8275  df-card 8625  df-cda 8850  df-pnf 9932  df-mnf 9933  df-xr 9934  df-ltxr 9935  df-le 9936  df-sub 10119  df-neg 10120  df-div 10534  df-nn 10868  df-2 10926  df-3 10927  df-4 10928  df-5 10929  df-6 10930  df-7 10931  df-8 10932  df-9 10933  df-n0 11140  df-z 11211  df-dec 11326  df-uz 11520  df-q 11621  df-rp 11665  df-xneg 11778  df-xadd 11779  df-xmul 11780  df-ioo 12006  df-icc 12009  df-fz 12153  df-fzo 12290  df-seq 12619  df-exp 12678  df-hash 12935  df-cj 13633  df-re 13634  df-im 13635  df-sqrt 13769  df-abs 13770  df-struct 15643  df-ndx 15644  df-slot 15645  df-base 15646  df-sets 15647  df-ress 15648  df-plusg 15727  df-mulr 15728  df-starv 15729  df-sca 15730  df-vsca 15731  df-ip 15732  df-tset 15733  df-ple 15734  df-ds 15737  df-unif 15738  df-hom 15739  df-cco 15740  df-rest 15852  df-topn 15853  df-0g 15871  df-gsum 15872  df-topgen 15873  df-pt 15874  df-prds 15877  df-xrs 15931  df-qtop 15936  df-imas 15937  df-xps 15939  df-mre 16015  df-mrc 16016  df-acs 16018  df-mgm 17011  df-sgrp 17053  df-mnd 17064  df-submnd 17105  df-mulg 17310  df-cntz 17519  df-cmn 17964  df-psmet 19505  df-xmet 19506  df-met 19507  df-bl 19508  df-mopn 19509  df-cnfld 19514  df-top 20463  df-bases 20464  df-topon 20465  df-topsp 20466  df-cld 20575  df-cls 20577  df-nei 20654  df-cn 20783  df-cnp 20784  df-haus 20871  df-cmp 20942  df-nlly 21022  df-tx 21117  df-hmeo 21310  df-xms 21876  df-ms 21877  df-tms 21878  df-cncf 22420
This theorem is referenced by:  rellycmp  22495
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