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Theorem heibor 33750
Description: Generalized Heine-Borel Theorem. A metric space is compact iff it is complete and totally bounded. See heibor1 33739 and heiborlem1 33740 for a description of the proof. (Contributed by Jeff Madsen, 2-Sep-2009.) (Revised by Mario Carneiro, 28-Jan-2014.)
Hypothesis
Ref Expression
heibor.1 𝐽 = (MetOpen‘𝐷)
Assertion
Ref Expression
heibor ((𝐷 ∈ (Met‘𝑋) ∧ 𝐽 ∈ Comp) ↔ (𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)))

Proof of Theorem heibor
Dummy variables 𝑡 𝑛 𝑦 𝑘 𝑟 𝑢 𝑚 𝑣 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 heibor.1 . . 3 𝐽 = (MetOpen‘𝐷)
21heibor1 33739 . 2 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐽 ∈ Comp) → (𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)))
3 cmetmet 23130 . . . 4 (𝐷 ∈ (CMet‘𝑋) → 𝐷 ∈ (Met‘𝑋))
43adantr 480 . . 3 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)) → 𝐷 ∈ (Met‘𝑋))
5 metxmet 22186 . . . . . 6 (𝐷 ∈ (Met‘𝑋) → 𝐷 ∈ (∞Met‘𝑋))
61mopntop 22292 . . . . . 6 (𝐷 ∈ (∞Met‘𝑋) → 𝐽 ∈ Top)
73, 5, 63syl 18 . . . . 5 (𝐷 ∈ (CMet‘𝑋) → 𝐽 ∈ Top)
87adantr 480 . . . 4 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)) → 𝐽 ∈ Top)
9 istotbnd 33698 . . . . . . . . . . . . 13 (𝐷 ∈ (TotBnd‘𝑋) ↔ (𝐷 ∈ (Met‘𝑋) ∧ ∀𝑟 ∈ ℝ+𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)𝑟))))
109simprbi 479 . . . . . . . . . . . 12 (𝐷 ∈ (TotBnd‘𝑋) → ∀𝑟 ∈ ℝ+𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)𝑟)))
11 2nn 11223 . . . . . . . . . . . . . . 15 2 ∈ ℕ
12 nnexpcl 12913 . . . . . . . . . . . . . . 15 ((2 ∈ ℕ ∧ 𝑛 ∈ ℕ0) → (2↑𝑛) ∈ ℕ)
1311, 12mpan 706 . . . . . . . . . . . . . 14 (𝑛 ∈ ℕ0 → (2↑𝑛) ∈ ℕ)
1413nnrpd 11908 . . . . . . . . . . . . 13 (𝑛 ∈ ℕ0 → (2↑𝑛) ∈ ℝ+)
1514rpreccld 11920 . . . . . . . . . . . 12 (𝑛 ∈ ℕ0 → (1 / (2↑𝑛)) ∈ ℝ+)
16 oveq2 6698 . . . . . . . . . . . . . . . . . 18 (𝑟 = (1 / (2↑𝑛)) → (𝑦(ball‘𝐷)𝑟) = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
1716eqeq2d 2661 . . . . . . . . . . . . . . . . 17 (𝑟 = (1 / (2↑𝑛)) → (𝑣 = (𝑦(ball‘𝐷)𝑟) ↔ 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
1817rexbidv 3081 . . . . . . . . . . . . . . . 16 (𝑟 = (1 / (2↑𝑛)) → (∃𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)𝑟) ↔ ∃𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
1918ralbidv 3015 . . . . . . . . . . . . . . 15 (𝑟 = (1 / (2↑𝑛)) → (∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)𝑟) ↔ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
2019anbi2d 740 . . . . . . . . . . . . . 14 (𝑟 = (1 / (2↑𝑛)) → (( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)𝑟)) ↔ ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))))
2120rexbidv 3081 . . . . . . . . . . . . 13 (𝑟 = (1 / (2↑𝑛)) → (∃𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)𝑟)) ↔ ∃𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))))
2221rspccva 3339 . . . . . . . . . . . 12 ((∀𝑟 ∈ ℝ+𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)𝑟)) ∧ (1 / (2↑𝑛)) ∈ ℝ+) → ∃𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
2310, 15, 22syl2an 493 . . . . . . . . . . 11 ((𝐷 ∈ (TotBnd‘𝑋) ∧ 𝑛 ∈ ℕ0) → ∃𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
2423expcom 450 . . . . . . . . . 10 (𝑛 ∈ ℕ0 → (𝐷 ∈ (TotBnd‘𝑋) → ∃𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))))
2524adantl 481 . . . . . . . . 9 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) → (𝐷 ∈ (TotBnd‘𝑋) → ∃𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))))
26 oveq1 6697 . . . . . . . . . . . . . . 15 (𝑦 = (𝑚𝑣) → (𝑦(ball‘𝐷)(1 / (2↑𝑛))) = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
2726eqeq2d 2661 . . . . . . . . . . . . . 14 (𝑦 = (𝑚𝑣) → (𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛))) ↔ 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))))
2827ac6sfi 8245 . . . . . . . . . . . . 13 ((𝑢 ∈ Fin ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))) → ∃𝑚(𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))))
2928adantrl 752 . . . . . . . . . . . 12 ((𝑢 ∈ Fin ∧ ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → ∃𝑚(𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))))
3029adantl 481 . . . . . . . . . . 11 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))) → ∃𝑚(𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))))
31 simp3l 1109 . . . . . . . . . . . . . . . . . . 19 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑚:𝑢𝑋)
32 frn 6091 . . . . . . . . . . . . . . . . . . 19 (𝑚:𝑢𝑋 → ran 𝑚𝑋)
3331, 32syl 17 . . . . . . . . . . . . . . . . . 18 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → ran 𝑚𝑋)
341mopnuni 22293 . . . . . . . . . . . . . . . . . . . . 21 (𝐷 ∈ (∞Met‘𝑋) → 𝑋 = 𝐽)
353, 5, 343syl 18 . . . . . . . . . . . . . . . . . . . 20 (𝐷 ∈ (CMet‘𝑋) → 𝑋 = 𝐽)
3635adantr 480 . . . . . . . . . . . . . . . . . . 19 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) → 𝑋 = 𝐽)
37363ad2ant1 1102 . . . . . . . . . . . . . . . . . 18 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑋 = 𝐽)
3833, 37sseqtrd 3674 . . . . . . . . . . . . . . . . 17 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → ran 𝑚 𝐽)
39 fvex 6239 . . . . . . . . . . . . . . . . . . . 20 (MetOpen‘𝐷) ∈ V
401, 39eqeltri 2726 . . . . . . . . . . . . . . . . . . 19 𝐽 ∈ V
4140uniex 6995 . . . . . . . . . . . . . . . . . 18 𝐽 ∈ V
4241elpw2 4858 . . . . . . . . . . . . . . . . 17 (ran 𝑚 ∈ 𝒫 𝐽 ↔ ran 𝑚 𝐽)
4338, 42sylibr 224 . . . . . . . . . . . . . . . 16 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → ran 𝑚 ∈ 𝒫 𝐽)
44 simp2l 1107 . . . . . . . . . . . . . . . . 17 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑢 ∈ Fin)
45 ffn 6083 . . . . . . . . . . . . . . . . . . 19 (𝑚:𝑢𝑋𝑚 Fn 𝑢)
46 dffn4 6159 . . . . . . . . . . . . . . . . . . 19 (𝑚 Fn 𝑢𝑚:𝑢onto→ran 𝑚)
4745, 46sylib 208 . . . . . . . . . . . . . . . . . 18 (𝑚:𝑢𝑋𝑚:𝑢onto→ran 𝑚)
48 fofi 8293 . . . . . . . . . . . . . . . . . 18 ((𝑢 ∈ Fin ∧ 𝑚:𝑢onto→ran 𝑚) → ran 𝑚 ∈ Fin)
4947, 48sylan2 490 . . . . . . . . . . . . . . . . 17 ((𝑢 ∈ Fin ∧ 𝑚:𝑢𝑋) → ran 𝑚 ∈ Fin)
5044, 31, 49syl2anc 694 . . . . . . . . . . . . . . . 16 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → ran 𝑚 ∈ Fin)
5143, 50elind 3831 . . . . . . . . . . . . . . 15 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → ran 𝑚 ∈ (𝒫 𝐽 ∩ Fin))
5226eleq2d 2716 . . . . . . . . . . . . . . . . . . . 20 (𝑦 = (𝑚𝑣) → (𝑟 ∈ (𝑦(ball‘𝐷)(1 / (2↑𝑛))) ↔ 𝑟 ∈ ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))))
5352rexrn 6401 . . . . . . . . . . . . . . . . . . 19 (𝑚 Fn 𝑢 → (∃𝑦 ∈ ran 𝑚 𝑟 ∈ (𝑦(ball‘𝐷)(1 / (2↑𝑛))) ↔ ∃𝑣𝑢 𝑟 ∈ ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))))
54 eliun 4556 . . . . . . . . . . . . . . . . . . 19 (𝑟 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛))) ↔ ∃𝑦 ∈ ran 𝑚 𝑟 ∈ (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
55 eliun 4556 . . . . . . . . . . . . . . . . . . 19 (𝑟 𝑣𝑢 ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))) ↔ ∃𝑣𝑢 𝑟 ∈ ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
5653, 54, 553bitr4g 303 . . . . . . . . . . . . . . . . . 18 (𝑚 Fn 𝑢 → (𝑟 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛))) ↔ 𝑟 𝑣𝑢 ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))))
5756eqrdv 2649 . . . . . . . . . . . . . . . . 17 (𝑚 Fn 𝑢 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛))) = 𝑣𝑢 ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
5831, 45, 573syl 18 . . . . . . . . . . . . . . . 16 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛))) = 𝑣𝑢 ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
59 simp3r 1110 . . . . . . . . . . . . . . . . 17 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
60 uniiun 4605 . . . . . . . . . . . . . . . . . 18 𝑢 = 𝑣𝑢 𝑣
61 iuneq2 4569 . . . . . . . . . . . . . . . . . 18 (∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))) → 𝑣𝑢 𝑣 = 𝑣𝑢 ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
6260, 61syl5eq 2697 . . . . . . . . . . . . . . . . 17 (∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))) → 𝑢 = 𝑣𝑢 ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
6359, 62syl 17 . . . . . . . . . . . . . . . 16 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑢 = 𝑣𝑢 ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))
64 simp2r 1108 . . . . . . . . . . . . . . . 16 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑢 = 𝑋)
6558, 63, 643eqtr2rd 2692 . . . . . . . . . . . . . . 15 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑋 = 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛))))
66 iuneq1 4566 . . . . . . . . . . . . . . . . 17 (𝑡 = ran 𝑚 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))) = 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛))))
6766eqeq2d 2661 . . . . . . . . . . . . . . . 16 (𝑡 = ran 𝑚 → (𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))) ↔ 𝑋 = 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
6867rspcev 3340 . . . . . . . . . . . . . . 15 ((ran 𝑚 ∈ (𝒫 𝐽 ∩ Fin) ∧ 𝑋 = 𝑦 ∈ ran 𝑚(𝑦(ball‘𝐷)(1 / (2↑𝑛)))) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
6951, 65, 68syl2anc 694 . . . . . . . . . . . . . 14 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋) ∧ (𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛))))) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
70693expia 1286 . . . . . . . . . . . . 13 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ 𝑢 = 𝑋)) → ((𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
7170adantrrr 761 . . . . . . . . . . . 12 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))) → ((𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
7271exlimdv 1901 . . . . . . . . . . 11 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))) → (∃𝑚(𝑚:𝑢𝑋 ∧ ∀𝑣𝑢 𝑣 = ((𝑚𝑣)(ball‘𝐷)(1 / (2↑𝑛)))) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
7330, 72mpd 15 . . . . . . . . . 10 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) ∧ (𝑢 ∈ Fin ∧ ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
7473rexlimdvaa 3061 . . . . . . . . 9 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) → (∃𝑢 ∈ Fin ( 𝑢 = 𝑋 ∧ ∀𝑣𝑢𝑦𝑋 𝑣 = (𝑦(ball‘𝐷)(1 / (2↑𝑛)))) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
7525, 74syld 47 . . . . . . . 8 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑛 ∈ ℕ0) → (𝐷 ∈ (TotBnd‘𝑋) → ∃𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
7675ralrimdva 2998 . . . . . . 7 (𝐷 ∈ (CMet‘𝑋) → (𝐷 ∈ (TotBnd‘𝑋) → ∀𝑛 ∈ ℕ0𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
7741pwex 4878 . . . . . . . . 9 𝒫 𝐽 ∈ V
7877inex1 4832 . . . . . . . 8 (𝒫 𝐽 ∩ Fin) ∈ V
79 nn0ennn 12818 . . . . . . . . 9 0 ≈ ℕ
80 nnenom 12819 . . . . . . . . 9 ℕ ≈ ω
8179, 80entri 8051 . . . . . . . 8 0 ≈ ω
82 iuneq1 4566 . . . . . . . . 9 (𝑡 = (𝑚𝑛) → 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))) = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))
8382eqeq2d 2661 . . . . . . . 8 (𝑡 = (𝑚𝑛) → (𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))) ↔ 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
8478, 81, 83axcc4 9299 . . . . . . 7 (∀𝑛 ∈ ℕ0𝑡 ∈ (𝒫 𝐽 ∩ Fin)𝑋 = 𝑦𝑡 (𝑦(ball‘𝐷)(1 / (2↑𝑛))) → ∃𝑚(𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
8576, 84syl6 35 . . . . . 6 (𝐷 ∈ (CMet‘𝑋) → (𝐷 ∈ (TotBnd‘𝑋) → ∃𝑚(𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))))
86 elpwi 4201 . . . . . . . . . 10 (𝑟 ∈ 𝒫 𝐽𝑟𝐽)
87 eqid 2651 . . . . . . . . . . . 12 {𝑢 ∣ ¬ ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin)𝑢 𝑣} = {𝑢 ∣ ¬ ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin)𝑢 𝑣}
88 eqid 2651 . . . . . . . . . . . 12 {⟨𝑡, 𝑘⟩ ∣ (𝑘 ∈ ℕ0𝑡 ∈ (𝑚𝑘) ∧ (𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘) ∈ {𝑢 ∣ ¬ ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin)𝑢 𝑣})} = {⟨𝑡, 𝑘⟩ ∣ (𝑘 ∈ ℕ0𝑡 ∈ (𝑚𝑘) ∧ (𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘) ∈ {𝑢 ∣ ¬ ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin)𝑢 𝑣})}
89 eqid 2651 . . . . . . . . . . . 12 (𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚)))) = (𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))
90 simpl 472 . . . . . . . . . . . 12 ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → 𝐷 ∈ (CMet‘𝑋))
9135pweqd 4196 . . . . . . . . . . . . . . . 16 (𝐷 ∈ (CMet‘𝑋) → 𝒫 𝑋 = 𝒫 𝐽)
9291ineq1d 3846 . . . . . . . . . . . . . . 15 (𝐷 ∈ (CMet‘𝑋) → (𝒫 𝑋 ∩ Fin) = (𝒫 𝐽 ∩ Fin))
9392feq3d 6070 . . . . . . . . . . . . . 14 (𝐷 ∈ (CMet‘𝑋) → (𝑚:ℕ0⟶(𝒫 𝑋 ∩ Fin) ↔ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)))
9493biimpar 501 . . . . . . . . . . . . 13 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) → 𝑚:ℕ0⟶(𝒫 𝑋 ∩ Fin))
9594adantrr 753 . . . . . . . . . . . 12 ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → 𝑚:ℕ0⟶(𝒫 𝑋 ∩ Fin))
96 oveq1 6697 . . . . . . . . . . . . . . . . . . 19 (𝑡 = 𝑦 → (𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = (𝑦(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛))
9796cbviunv 4591 . . . . . . . . . . . . . . . . . 18 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = 𝑦 ∈ (𝑚𝑛)(𝑦(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛)
98 id 22 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) → 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin))
99 inss1 3866 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝒫 𝐽 ∩ Fin) ⊆ 𝒫 𝐽
10099, 91syl5sseqr 3687 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝐷 ∈ (CMet‘𝑋) → (𝒫 𝐽 ∩ Fin) ⊆ 𝒫 𝑋)
101 fss 6094 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ (𝒫 𝐽 ∩ Fin) ⊆ 𝒫 𝑋) → 𝑚:ℕ0⟶𝒫 𝑋)
10298, 100, 101syl2anr 494 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) → 𝑚:ℕ0⟶𝒫 𝑋)
103102ffvelrnda 6399 . . . . . . . . . . . . . . . . . . . . . 22 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) → (𝑚𝑛) ∈ 𝒫 𝑋)
104103elpwid 4203 . . . . . . . . . . . . . . . . . . . . 21 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) → (𝑚𝑛) ⊆ 𝑋)
105104sselda 3636 . . . . . . . . . . . . . . . . . . . 20 ((((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) ∧ 𝑦 ∈ (𝑚𝑛)) → 𝑦𝑋)
106 simplr 807 . . . . . . . . . . . . . . . . . . . 20 ((((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) ∧ 𝑦 ∈ (𝑚𝑛)) → 𝑛 ∈ ℕ0)
107 oveq1 6697 . . . . . . . . . . . . . . . . . . . . 21 (𝑧 = 𝑦 → (𝑧(ball‘𝐷)(1 / (2↑𝑚))) = (𝑦(ball‘𝐷)(1 / (2↑𝑚))))
108 oveq2 6698 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑚 = 𝑛 → (2↑𝑚) = (2↑𝑛))
109108oveq2d 6706 . . . . . . . . . . . . . . . . . . . . . 22 (𝑚 = 𝑛 → (1 / (2↑𝑚)) = (1 / (2↑𝑛)))
110109oveq2d 6706 . . . . . . . . . . . . . . . . . . . . 21 (𝑚 = 𝑛 → (𝑦(ball‘𝐷)(1 / (2↑𝑚))) = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
111 ovex 6718 . . . . . . . . . . . . . . . . . . . . 21 (𝑦(ball‘𝐷)(1 / (2↑𝑛))) ∈ V
112107, 110, 89, 111ovmpt2 6838 . . . . . . . . . . . . . . . . . . . 20 ((𝑦𝑋𝑛 ∈ ℕ0) → (𝑦(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
113105, 106, 112syl2anc 694 . . . . . . . . . . . . . . . . . . 19 ((((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) ∧ 𝑦 ∈ (𝑚𝑛)) → (𝑦(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = (𝑦(ball‘𝐷)(1 / (2↑𝑛))))
114113iuneq2dv 4574 . . . . . . . . . . . . . . . . . 18 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) → 𝑦 ∈ (𝑚𝑛)(𝑦(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))
11597, 114syl5eq 2697 . . . . . . . . . . . . . . . . 17 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) → 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))
116115eqeq2d 2661 . . . . . . . . . . . . . . . 16 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) → (𝑋 = 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) ↔ 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛)))))
117116biimprd 238 . . . . . . . . . . . . . . 15 (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) ∧ 𝑛 ∈ ℕ0) → (𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))) → 𝑋 = 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛)))
118117ralimdva 2991 . . . . . . . . . . . . . 14 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin)) → (∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))) → ∀𝑛 ∈ ℕ0 𝑋 = 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛)))
119118impr 648 . . . . . . . . . . . . 13 ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → ∀𝑛 ∈ ℕ0 𝑋 = 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛))
120 fveq2 6229 . . . . . . . . . . . . . . . . 17 (𝑛 = 𝑘 → (𝑚𝑛) = (𝑚𝑘))
121120iuneq1d 4577 . . . . . . . . . . . . . . . 16 (𝑛 = 𝑘 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = 𝑡 ∈ (𝑚𝑘)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛))
122 simpl 472 . . . . . . . . . . . . . . . . . 18 ((𝑛 = 𝑘𝑡 ∈ (𝑚𝑘)) → 𝑛 = 𝑘)
123122oveq2d 6706 . . . . . . . . . . . . . . . . 17 ((𝑛 = 𝑘𝑡 ∈ (𝑚𝑘)) → (𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = (𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘))
124123iuneq2dv 4574 . . . . . . . . . . . . . . . 16 (𝑛 = 𝑘 𝑡 ∈ (𝑚𝑘)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = 𝑡 ∈ (𝑚𝑘)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘))
125121, 124eqtrd 2685 . . . . . . . . . . . . . . 15 (𝑛 = 𝑘 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) = 𝑡 ∈ (𝑚𝑘)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘))
126125eqeq2d 2661 . . . . . . . . . . . . . 14 (𝑛 = 𝑘 → (𝑋 = 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) ↔ 𝑋 = 𝑡 ∈ (𝑚𝑘)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘)))
127126cbvralv 3201 . . . . . . . . . . . . 13 (∀𝑛 ∈ ℕ0 𝑋 = 𝑡 ∈ (𝑚𝑛)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑛) ↔ ∀𝑘 ∈ ℕ0 𝑋 = 𝑡 ∈ (𝑚𝑘)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘))
128119, 127sylib 208 . . . . . . . . . . . 12 ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → ∀𝑘 ∈ ℕ0 𝑋 = 𝑡 ∈ (𝑚𝑘)(𝑡(𝑧𝑋, 𝑚 ∈ ℕ0 ↦ (𝑧(ball‘𝐷)(1 / (2↑𝑚))))𝑘))
1291, 87, 88, 89, 90, 95, 128heiborlem10 33749 . . . . . . . . . . 11 (((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) ∧ (𝑟𝐽 𝐽 = 𝑟)) → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣)
130129exp32 630 . . . . . . . . . 10 ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → (𝑟𝐽 → ( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣)))
13186, 130syl5 34 . . . . . . . . 9 ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → (𝑟 ∈ 𝒫 𝐽 → ( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣)))
132131ralrimiv 2994 . . . . . . . 8 ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛))))) → ∀𝑟 ∈ 𝒫 𝐽( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣))
133132ex 449 . . . . . . 7 (𝐷 ∈ (CMet‘𝑋) → ((𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛)))) → ∀𝑟 ∈ 𝒫 𝐽( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣)))
134133exlimdv 1901 . . . . . 6 (𝐷 ∈ (CMet‘𝑋) → (∃𝑚(𝑚:ℕ0⟶(𝒫 𝐽 ∩ Fin) ∧ ∀𝑛 ∈ ℕ0 𝑋 = 𝑦 ∈ (𝑚𝑛)(𝑦(ball‘𝐷)(1 / (2↑𝑛)))) → ∀𝑟 ∈ 𝒫 𝐽( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣)))
13585, 134syld 47 . . . . 5 (𝐷 ∈ (CMet‘𝑋) → (𝐷 ∈ (TotBnd‘𝑋) → ∀𝑟 ∈ 𝒫 𝐽( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣)))
136135imp 444 . . . 4 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)) → ∀𝑟 ∈ 𝒫 𝐽( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣))
137 eqid 2651 . . . . 5 𝐽 = 𝐽
138137iscmp 21239 . . . 4 (𝐽 ∈ Comp ↔ (𝐽 ∈ Top ∧ ∀𝑟 ∈ 𝒫 𝐽( 𝐽 = 𝑟 → ∃𝑣 ∈ (𝒫 𝑟 ∩ Fin) 𝐽 = 𝑣)))
1398, 136, 138sylanbrc 699 . . 3 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)) → 𝐽 ∈ Comp)
1404, 139jca 553 . 2 ((𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)) → (𝐷 ∈ (Met‘𝑋) ∧ 𝐽 ∈ Comp))
1412, 140impbii 199 1 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐽 ∈ Comp) ↔ (𝐷 ∈ (CMet‘𝑋) ∧ 𝐷 ∈ (TotBnd‘𝑋)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 383  w3a 1054   = wceq 1523  wex 1744  wcel 2030  {cab 2637  wral 2941  wrex 2942  Vcvv 3231  cin 3606  wss 3607  𝒫 cpw 4191   cuni 4468   ciun 4552  {copab 4745  ran crn 5144   Fn wfn 5921  wf 5922  ontowfo 5924  cfv 5926  (class class class)co 6690  cmpt2 6692  ωcom 7107  Fincfn 7997  1c1 9975   / cdiv 10722  cn 11058  2c2 11108  0cn0 11330  +crp 11870  cexp 12900  ∞Metcxmt 19779  Metcme 19780  ballcbl 19781  MetOpencmopn 19784  Topctop 20746  Compccmp 21237  CMetcms 23098  TotBndctotbnd 33695
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991  ax-inf2 8576  ax-cc 9295  ax-cnex 10030  ax-resscn 10031  ax-1cn 10032  ax-icn 10033  ax-addcl 10034  ax-addrcl 10035  ax-mulcl 10036  ax-mulrcl 10037  ax-mulcom 10038  ax-addass 10039  ax-mulass 10040  ax-distr 10041  ax-i2m1 10042  ax-1ne0 10043  ax-1rid 10044  ax-rnegex 10045  ax-rrecex 10046  ax-cnre 10047  ax-pre-lttri 10048  ax-pre-lttrn 10049  ax-pre-ltadd 10050  ax-pre-mulgt0 10051  ax-pre-sup 10052
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-nel 2927  df-ral 2946  df-rex 2947  df-reu 2948  df-rmo 2949  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-uni 4469  df-int 4508  df-iun 4554  df-iin 4555  df-br 4686  df-opab 4746  df-mpt 4763  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-se 5103  df-we 5104  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-pred 5718  df-ord 5764  df-on 5765  df-lim 5766  df-suc 5767  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-isom 5935  df-riota 6651  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-om 7108  df-1st 7210  df-2nd 7211  df-wrecs 7452  df-recs 7513  df-rdg 7551  df-1o 7605  df-2o 7606  df-oadd 7609  df-omul 7610  df-er 7787  df-map 7901  df-pm 7902  df-en 7998  df-dom 7999  df-sdom 8000  df-fin 8001  df-fi 8358  df-sup 8389  df-inf 8390  df-oi 8456  df-card 8803  df-acn 8806  df-pnf 10114  df-mnf 10115  df-xr 10116  df-ltxr 10117  df-le 10118  df-sub 10306  df-neg 10307  df-div 10723  df-nn 11059  df-2 11117  df-3 11118  df-n0 11331  df-z 11416  df-uz 11726  df-q 11827  df-rp 11871  df-xneg 11984  df-xadd 11985  df-xmul 11986  df-ico 12219  df-icc 12220  df-fz 12365  df-fl 12633  df-seq 12842  df-exp 12901  df-cj 13883  df-re 13884  df-im 13885  df-sqrt 14019  df-abs 14020  df-clim 14263  df-rlim 14264  df-rest 16130  df-topgen 16151  df-psmet 19786  df-xmet 19787  df-met 19788  df-bl 19789  df-mopn 19790  df-fbas 19791  df-fg 19792  df-top 20747  df-topon 20764  df-bases 20798  df-cld 20871  df-ntr 20872  df-cls 20873  df-nei 20950  df-lm 21081  df-haus 21167  df-cmp 21238  df-fil 21697  df-fm 21789  df-flim 21790  df-flf 21791  df-cfil 23099  df-cau 23100  df-cmet 23101  df-totbnd 33697
This theorem is referenced by:  rrnheibor  33766
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