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Theorem heibor1lem 32660
Description: Lemma for heibor1 32661. A compact metric space is complete. This proof works by considering the collection cls(𝐹 “ (ℤ𝑛)) for each 𝑛 ∈ ℕ, which has the finite intersection property because any finite intersection of upper integer sets is another upper integer set, so any finite intersection of the image closures will contain (𝐹 “ (ℤ𝑚)) for some 𝑚. Thus, by compactness, the intersection contains a point 𝑦, which must then be the convergent point of 𝐹. (Contributed by Jeff Madsen, 17-Jan-2014.) (Revised by Mario Carneiro, 5-Jun-2014.)
Hypotheses
Ref Expression
heibor.1 𝐽 = (MetOpen‘𝐷)
heibor1.3 (𝜑𝐷 ∈ (Met‘𝑋))
heibor1.4 (𝜑𝐽 ∈ Comp)
heibor1.5 (𝜑𝐹 ∈ (Cau‘𝐷))
heibor1.6 (𝜑𝐹:ℕ⟶𝑋)
Assertion
Ref Expression
heibor1lem (𝜑𝐹 ∈ dom (⇝𝑡𝐽))

Proof of Theorem heibor1lem
Dummy variables 𝑛 𝑦 𝑘 𝑟 𝑢 𝑚 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 heibor1.4 . . 3 (𝜑𝐽 ∈ Comp)
2 heibor1.3 . . . . . . . . . 10 (𝜑𝐷 ∈ (Met‘𝑋))
3 metxmet 21872 . . . . . . . . . 10 (𝐷 ∈ (Met‘𝑋) → 𝐷 ∈ (∞Met‘𝑋))
42, 3syl 17 . . . . . . . . 9 (𝜑𝐷 ∈ (∞Met‘𝑋))
5 heibor.1 . . . . . . . . . 10 𝐽 = (MetOpen‘𝐷)
65mopntop 21978 . . . . . . . . 9 (𝐷 ∈ (∞Met‘𝑋) → 𝐽 ∈ Top)
74, 6syl 17 . . . . . . . 8 (𝜑𝐽 ∈ Top)
8 imassrn 5286 . . . . . . . . 9 (𝐹𝑢) ⊆ ran 𝐹
9 heibor1.6 . . . . . . . . . . 11 (𝜑𝐹:ℕ⟶𝑋)
10 frn 5851 . . . . . . . . . . 11 (𝐹:ℕ⟶𝑋 → ran 𝐹𝑋)
119, 10syl 17 . . . . . . . . . 10 (𝜑 → ran 𝐹𝑋)
125mopnuni 21979 . . . . . . . . . . 11 (𝐷 ∈ (∞Met‘𝑋) → 𝑋 = 𝐽)
134, 12syl 17 . . . . . . . . . 10 (𝜑𝑋 = 𝐽)
1411, 13sseqtrd 3508 . . . . . . . . 9 (𝜑 → ran 𝐹 𝐽)
158, 14syl5ss 3483 . . . . . . . 8 (𝜑 → (𝐹𝑢) ⊆ 𝐽)
16 eqid 2514 . . . . . . . . 9 𝐽 = 𝐽
1716clscld 20585 . . . . . . . 8 ((𝐽 ∈ Top ∧ (𝐹𝑢) ⊆ 𝐽) → ((cls‘𝐽)‘(𝐹𝑢)) ∈ (Clsd‘𝐽))
187, 15, 17syl2anc 690 . . . . . . 7 (𝜑 → ((cls‘𝐽)‘(𝐹𝑢)) ∈ (Clsd‘𝐽))
19 eleq1a 2587 . . . . . . 7 (((cls‘𝐽)‘(𝐹𝑢)) ∈ (Clsd‘𝐽) → (𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑘 ∈ (Clsd‘𝐽)))
2018, 19syl 17 . . . . . 6 (𝜑 → (𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑘 ∈ (Clsd‘𝐽)))
2120rexlimdvw 2920 . . . . 5 (𝜑 → (∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑘 ∈ (Clsd‘𝐽)))
2221abssdv 3543 . . . 4 (𝜑 → {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ⊆ (Clsd‘𝐽))
23 fvex 5996 . . . . 5 (Clsd‘𝐽) ∈ V
2423elpw2 4654 . . . 4 ({𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∈ 𝒫 (Clsd‘𝐽) ↔ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ⊆ (Clsd‘𝐽))
2522, 24sylibr 222 . . 3 (𝜑 → {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∈ 𝒫 (Clsd‘𝐽))
26 elin 3662 . . . . . . 7 (𝑟 ∈ (𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∩ Fin) ↔ (𝑟 ∈ 𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∧ 𝑟 ∈ Fin))
27 selpw 4018 . . . . . . . . 9 (𝑟 ∈ 𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ↔ 𝑟 ⊆ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})
28 ssabral 3540 . . . . . . . . 9 (𝑟 ⊆ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ↔ ∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))
2927, 28bitri 262 . . . . . . . 8 (𝑟 ∈ 𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ↔ ∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))
3029anbi1i 726 . . . . . . 7 ((𝑟 ∈ 𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∧ 𝑟 ∈ Fin) ↔ (∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ 𝑟 ∈ Fin))
3126, 30bitri 262 . . . . . 6 (𝑟 ∈ (𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∩ Fin) ↔ (∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ 𝑟 ∈ Fin))
32 raleq 3019 . . . . . . . . . . . . . 14 (𝑚 = ∅ → (∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∀𝑘 ∈ ∅ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))))
3332anbi2d 735 . . . . . . . . . . . . 13 (𝑚 = ∅ → ((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) ↔ (𝜑 ∧ ∀𝑘 ∈ ∅ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))))
34 inteq 4311 . . . . . . . . . . . . . . 15 (𝑚 = ∅ → 𝑚 = ∅)
3534sseq2d 3500 . . . . . . . . . . . . . 14 (𝑚 = ∅ → ((𝐹𝑘) ⊆ 𝑚 ↔ (𝐹𝑘) ⊆ ∅))
3635rexbidv 2938 . . . . . . . . . . . . 13 (𝑚 = ∅ → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚 ↔ ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ ∅))
3733, 36imbi12d 332 . . . . . . . . . . . 12 (𝑚 = ∅ → (((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚) ↔ ((𝜑 ∧ ∀𝑘 ∈ ∅ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ ∅)))
38 raleq 3019 . . . . . . . . . . . . . 14 (𝑚 = 𝑦 → (∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))))
3938anbi2d 735 . . . . . . . . . . . . 13 (𝑚 = 𝑦 → ((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) ↔ (𝜑 ∧ ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))))
40 inteq 4311 . . . . . . . . . . . . . . 15 (𝑚 = 𝑦 𝑚 = 𝑦)
4140sseq2d 3500 . . . . . . . . . . . . . 14 (𝑚 = 𝑦 → ((𝐹𝑘) ⊆ 𝑚 ↔ (𝐹𝑘) ⊆ 𝑦))
4241rexbidv 2938 . . . . . . . . . . . . 13 (𝑚 = 𝑦 → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚 ↔ ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦))
4339, 42imbi12d 332 . . . . . . . . . . . 12 (𝑚 = 𝑦 → (((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚) ↔ ((𝜑 ∧ ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦)))
44 raleq 3019 . . . . . . . . . . . . . 14 (𝑚 = (𝑦 ∪ {𝑛}) → (∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))))
4544anbi2d 735 . . . . . . . . . . . . 13 (𝑚 = (𝑦 ∪ {𝑛}) → ((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) ↔ (𝜑 ∧ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))))
46 inteq 4311 . . . . . . . . . . . . . . 15 (𝑚 = (𝑦 ∪ {𝑛}) → 𝑚 = (𝑦 ∪ {𝑛}))
4746sseq2d 3500 . . . . . . . . . . . . . 14 (𝑚 = (𝑦 ∪ {𝑛}) → ((𝐹𝑘) ⊆ 𝑚 ↔ (𝐹𝑘) ⊆ (𝑦 ∪ {𝑛})))
4847rexbidv 2938 . . . . . . . . . . . . 13 (𝑚 = (𝑦 ∪ {𝑛}) → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚 ↔ ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛})))
4945, 48imbi12d 332 . . . . . . . . . . . 12 (𝑚 = (𝑦 ∪ {𝑛}) → (((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚) ↔ ((𝜑 ∧ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛}))))
50 raleq 3019 . . . . . . . . . . . . . 14 (𝑚 = 𝑟 → (∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))))
5150anbi2d 735 . . . . . . . . . . . . 13 (𝑚 = 𝑟 → ((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) ↔ (𝜑 ∧ ∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))))
52 inteq 4311 . . . . . . . . . . . . . . 15 (𝑚 = 𝑟 𝑚 = 𝑟)
5352sseq2d 3500 . . . . . . . . . . . . . 14 (𝑚 = 𝑟 → ((𝐹𝑘) ⊆ 𝑚 ↔ (𝐹𝑘) ⊆ 𝑟))
5453rexbidv 2938 . . . . . . . . . . . . 13 (𝑚 = 𝑟 → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚 ↔ ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟))
5551, 54imbi12d 332 . . . . . . . . . . . 12 (𝑚 = 𝑟 → (((𝜑 ∧ ∀𝑘𝑚𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑚) ↔ ((𝜑 ∧ ∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟)))
56 uzf 11426 . . . . . . . . . . . . . . . 16 :ℤ⟶𝒫 ℤ
57 ffn 5843 . . . . . . . . . . . . . . . 16 (ℤ:ℤ⟶𝒫 ℤ → ℤ Fn ℤ)
5856, 57ax-mp 5 . . . . . . . . . . . . . . 15 Fn ℤ
59 0z 11127 . . . . . . . . . . . . . . 15 0 ∈ ℤ
60 fnfvelrn 6147 . . . . . . . . . . . . . . 15 ((ℤ Fn ℤ ∧ 0 ∈ ℤ) → (ℤ‘0) ∈ ran ℤ)
6158, 59, 60mp2an 703 . . . . . . . . . . . . . 14 (ℤ‘0) ∈ ran ℤ
62 ssv 3492 . . . . . . . . . . . . . . 15 (𝐹 “ (ℤ‘0)) ⊆ V
63 int0 4323 . . . . . . . . . . . . . . 15 ∅ = V
6462, 63sseqtr4i 3505 . . . . . . . . . . . . . 14 (𝐹 “ (ℤ‘0)) ⊆
65 imaeq2 5271 . . . . . . . . . . . . . . . 16 (𝑘 = (ℤ‘0) → (𝐹𝑘) = (𝐹 “ (ℤ‘0)))
6665sseq1d 3499 . . . . . . . . . . . . . . 15 (𝑘 = (ℤ‘0) → ((𝐹𝑘) ⊆ ∅ ↔ (𝐹 “ (ℤ‘0)) ⊆ ∅))
6766rspcev 3186 . . . . . . . . . . . . . 14 (((ℤ‘0) ∈ ran ℤ ∧ (𝐹 “ (ℤ‘0)) ⊆ ∅) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ ∅)
6861, 64, 67mp2an 703 . . . . . . . . . . . . 13 𝑘 ∈ ran ℤ(𝐹𝑘) ⊆
6968a1i 11 . . . . . . . . . . . 12 ((𝜑 ∧ ∀𝑘 ∈ ∅ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ ∅)
70 ssun1 3642 . . . . . . . . . . . . . . . . 17 𝑦 ⊆ (𝑦 ∪ {𝑛})
71 ssralv 3533 . . . . . . . . . . . . . . . . 17 (𝑦 ⊆ (𝑦 ∪ {𝑛}) → (∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))))
7270, 71ax-mp 5 . . . . . . . . . . . . . . . 16 (∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))
7372anim2i 590 . . . . . . . . . . . . . . 15 ((𝜑 ∧ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → (𝜑 ∧ ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))))
7473imim1i 60 . . . . . . . . . . . . . 14 (((𝜑 ∧ ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦) → ((𝜑 ∧ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦))
75 ssun2 3643 . . . . . . . . . . . . . . . . . 18 {𝑛} ⊆ (𝑦 ∪ {𝑛})
76 ssralv 3533 . . . . . . . . . . . . . . . . . 18 ({𝑛} ⊆ (𝑦 ∪ {𝑛}) → (∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → ∀𝑘 ∈ {𝑛}∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))))
7775, 76ax-mp 5 . . . . . . . . . . . . . . . . 17 (∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → ∀𝑘 ∈ {𝑛}∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)))
78 vex 3080 . . . . . . . . . . . . . . . . . 18 𝑛 ∈ V
79 eqeq1 2518 . . . . . . . . . . . . . . . . . . 19 (𝑘 = 𝑛 → (𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ 𝑛 = ((cls‘𝐽)‘(𝐹𝑢))))
8079rexbidv 2938 . . . . . . . . . . . . . . . . . 18 (𝑘 = 𝑛 → (∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∃𝑢 ∈ ran ℤ𝑛 = ((cls‘𝐽)‘(𝐹𝑢))))
8178, 80ralsn 4072 . . . . . . . . . . . . . . . . 17 (∀𝑘 ∈ {𝑛}∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∃𝑢 ∈ ran ℤ𝑛 = ((cls‘𝐽)‘(𝐹𝑢)))
8277, 81sylib 206 . . . . . . . . . . . . . . . 16 (∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → ∃𝑢 ∈ ran ℤ𝑛 = ((cls‘𝐽)‘(𝐹𝑢)))
83 uzin2 13787 . . . . . . . . . . . . . . . . . . . 20 ((𝑢 ∈ ran ℤ𝑘 ∈ ran ℤ) → (𝑢𝑘) ∈ ran ℤ)
848, 11syl5ss 3483 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝜑 → (𝐹𝑢) ⊆ 𝑋)
8584, 13sseqtrd 3508 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝜑 → (𝐹𝑢) ⊆ 𝐽)
8616sscls 20594 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝐽 ∈ Top ∧ (𝐹𝑢) ⊆ 𝐽) → (𝐹𝑢) ⊆ ((cls‘𝐽)‘(𝐹𝑢)))
877, 85, 86syl2anc 690 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝜑 → (𝐹𝑢) ⊆ ((cls‘𝐽)‘(𝐹𝑢)))
88 sseq2 3494 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) → ((𝐹𝑢) ⊆ 𝑛 ↔ (𝐹𝑢) ⊆ ((cls‘𝐽)‘(𝐹𝑢))))
8987, 88syl5ibrcom 235 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝜑 → (𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) → (𝐹𝑢) ⊆ 𝑛))
90 inss2 3699 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑢𝑘) ⊆ 𝑘
91 inss1 3698 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑢𝑘) ⊆ 𝑢
92 imass2 5311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((𝑢𝑘) ⊆ 𝑘 → (𝐹 “ (𝑢𝑘)) ⊆ (𝐹𝑘))
93 imass2 5311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((𝑢𝑘) ⊆ 𝑢 → (𝐹 “ (𝑢𝑘)) ⊆ (𝐹𝑢))
9492, 93anim12i 587 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((𝑢𝑘) ⊆ 𝑘 ∧ (𝑢𝑘) ⊆ 𝑢) → ((𝐹 “ (𝑢𝑘)) ⊆ (𝐹𝑘) ∧ (𝐹 “ (𝑢𝑘)) ⊆ (𝐹𝑢)))
95 ssin 3700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((𝐹 “ (𝑢𝑘)) ⊆ (𝐹𝑘) ∧ (𝐹 “ (𝑢𝑘)) ⊆ (𝐹𝑢)) ↔ (𝐹 “ (𝑢𝑘)) ⊆ ((𝐹𝑘) ∩ (𝐹𝑢)))
9694, 95sylib 206 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((𝑢𝑘) ⊆ 𝑘 ∧ (𝑢𝑘) ⊆ 𝑢) → (𝐹 “ (𝑢𝑘)) ⊆ ((𝐹𝑘) ∩ (𝐹𝑢)))
9790, 91, 96mp2an 703 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝐹 “ (𝑢𝑘)) ⊆ ((𝐹𝑘) ∩ (𝐹𝑢))
98 ss2in 3705 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝐹𝑘) ⊆ 𝑦 ∧ (𝐹𝑢) ⊆ 𝑛) → ((𝐹𝑘) ∩ (𝐹𝑢)) ⊆ ( 𝑦𝑛))
9997, 98syl5ss 3483 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝐹𝑘) ⊆ 𝑦 ∧ (𝐹𝑢) ⊆ 𝑛) → (𝐹 “ (𝑢𝑘)) ⊆ ( 𝑦𝑛))
10078intunsn 4349 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑦 ∪ {𝑛}) = ( 𝑦𝑛)
10199, 100syl6sseqr 3519 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝐹𝑘) ⊆ 𝑦 ∧ (𝐹𝑢) ⊆ 𝑛) → (𝐹 “ (𝑢𝑘)) ⊆ (𝑦 ∪ {𝑛}))
102101expcom 449 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐹𝑢) ⊆ 𝑛 → ((𝐹𝑘) ⊆ 𝑦 → (𝐹 “ (𝑢𝑘)) ⊆ (𝑦 ∪ {𝑛})))
10389, 102syl6 34 . . . . . . . . . . . . . . . . . . . . . . 23 (𝜑 → (𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) → ((𝐹𝑘) ⊆ 𝑦 → (𝐹 “ (𝑢𝑘)) ⊆ (𝑦 ∪ {𝑛}))))
104103impd 445 . . . . . . . . . . . . . . . . . . . . . 22 (𝜑 → ((𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ (𝐹𝑘) ⊆ 𝑦) → (𝐹 “ (𝑢𝑘)) ⊆ (𝑦 ∪ {𝑛})))
105 imaeq2 5271 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑚 = (𝑢𝑘) → (𝐹𝑚) = (𝐹 “ (𝑢𝑘)))
106105sseq1d 3499 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑚 = (𝑢𝑘) → ((𝐹𝑚) ⊆ (𝑦 ∪ {𝑛}) ↔ (𝐹 “ (𝑢𝑘)) ⊆ (𝑦 ∪ {𝑛})))
107106rspcev 3186 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑢𝑘) ∈ ran ℤ ∧ (𝐹 “ (𝑢𝑘)) ⊆ (𝑦 ∪ {𝑛})) → ∃𝑚 ∈ ran ℤ(𝐹𝑚) ⊆ (𝑦 ∪ {𝑛}))
108107expcom 449 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐹 “ (𝑢𝑘)) ⊆ (𝑦 ∪ {𝑛}) → ((𝑢𝑘) ∈ ran ℤ → ∃𝑚 ∈ ran ℤ(𝐹𝑚) ⊆ (𝑦 ∪ {𝑛})))
109104, 108syl6 34 . . . . . . . . . . . . . . . . . . . . 21 (𝜑 → ((𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ (𝐹𝑘) ⊆ 𝑦) → ((𝑢𝑘) ∈ ran ℤ → ∃𝑚 ∈ ran ℤ(𝐹𝑚) ⊆ (𝑦 ∪ {𝑛}))))
110109com23 83 . . . . . . . . . . . . . . . . . . . 20 (𝜑 → ((𝑢𝑘) ∈ ran ℤ → ((𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ (𝐹𝑘) ⊆ 𝑦) → ∃𝑚 ∈ ran ℤ(𝐹𝑚) ⊆ (𝑦 ∪ {𝑛}))))
11183, 110syl5 33 . . . . . . . . . . . . . . . . . . 19 (𝜑 → ((𝑢 ∈ ran ℤ𝑘 ∈ ran ℤ) → ((𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ (𝐹𝑘) ⊆ 𝑦) → ∃𝑚 ∈ ran ℤ(𝐹𝑚) ⊆ (𝑦 ∪ {𝑛}))))
112111rexlimdvv 2923 . . . . . . . . . . . . . . . . . 18 (𝜑 → (∃𝑢 ∈ ran ℤ𝑘 ∈ ran ℤ(𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ (𝐹𝑘) ⊆ 𝑦) → ∃𝑚 ∈ ran ℤ(𝐹𝑚) ⊆ (𝑦 ∪ {𝑛})))
113 reeanv 2990 . . . . . . . . . . . . . . . . . 18 (∃𝑢 ∈ ran ℤ𝑘 ∈ ran ℤ(𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ (𝐹𝑘) ⊆ 𝑦) ↔ (∃𝑢 ∈ ran ℤ𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦))
114 imaeq2 5271 . . . . . . . . . . . . . . . . . . . 20 (𝑚 = 𝑘 → (𝐹𝑚) = (𝐹𝑘))
115114sseq1d 3499 . . . . . . . . . . . . . . . . . . 19 (𝑚 = 𝑘 → ((𝐹𝑚) ⊆ (𝑦 ∪ {𝑛}) ↔ (𝐹𝑘) ⊆ (𝑦 ∪ {𝑛})))
116115cbvrexv 3052 . . . . . . . . . . . . . . . . . 18 (∃𝑚 ∈ ran ℤ(𝐹𝑚) ⊆ (𝑦 ∪ {𝑛}) ↔ ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛}))
117112, 113, 1163imtr3g 282 . . . . . . . . . . . . . . . . 17 (𝜑 → ((∃𝑢 ∈ ran ℤ𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛})))
118117expd 450 . . . . . . . . . . . . . . . 16 (𝜑 → (∃𝑢 ∈ ran ℤ𝑛 = ((cls‘𝐽)‘(𝐹𝑢)) → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦 → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛}))))
11982, 118syl5 33 . . . . . . . . . . . . . . 15 (𝜑 → (∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦 → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛}))))
120119imp 443 . . . . . . . . . . . . . 14 ((𝜑 ∧ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦 → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛})))
12174, 120sylcom 30 . . . . . . . . . . . . 13 (((𝜑 ∧ ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦) → ((𝜑 ∧ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛})))
122121a1i 11 . . . . . . . . . . . 12 (𝑦 ∈ Fin → (((𝜑 ∧ ∀𝑘𝑦𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑦) → ((𝜑 ∧ ∀𝑘 ∈ (𝑦 ∪ {𝑛})∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ (𝑦 ∪ {𝑛}))))
12337, 43, 49, 55, 69, 122findcard2 7959 . . . . . . . . . . 11 (𝑟 ∈ Fin → ((𝜑 ∧ ∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟))
124123com12 32 . . . . . . . . . 10 ((𝜑 ∧ ∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))) → (𝑟 ∈ Fin → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟))
125124impr 646 . . . . . . . . 9 ((𝜑 ∧ (∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ 𝑟 ∈ Fin)) → ∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟)
126 ffn 5843 . . . . . . . . . . . 12 (𝐹:ℕ⟶𝑋𝐹 Fn ℕ)
1279, 126syl 17 . . . . . . . . . . 11 (𝜑𝐹 Fn ℕ)
128 inss1 3698 . . . . . . . . . . . . . . 15 (𝑘 ∩ ℕ) ⊆ 𝑘
129 imass2 5311 . . . . . . . . . . . . . . 15 ((𝑘 ∩ ℕ) ⊆ 𝑘 → (𝐹 “ (𝑘 ∩ ℕ)) ⊆ (𝐹𝑘))
130128, 129ax-mp 5 . . . . . . . . . . . . . 14 (𝐹 “ (𝑘 ∩ ℕ)) ⊆ (𝐹𝑘)
131 nnuz 11459 . . . . . . . . . . . . . . . . . . . 20 ℕ = (ℤ‘1)
132 1z 11146 . . . . . . . . . . . . . . . . . . . . 21 1 ∈ ℤ
133 fnfvelrn 6147 . . . . . . . . . . . . . . . . . . . . 21 ((ℤ Fn ℤ ∧ 1 ∈ ℤ) → (ℤ‘1) ∈ ran ℤ)
13458, 132, 133mp2an 703 . . . . . . . . . . . . . . . . . . . 20 (ℤ‘1) ∈ ran ℤ
135131, 134eqeltri 2588 . . . . . . . . . . . . . . . . . . 19 ℕ ∈ ran ℤ
136 uzin2 13787 . . . . . . . . . . . . . . . . . . 19 ((𝑘 ∈ ran ℤ ∧ ℕ ∈ ran ℤ) → (𝑘 ∩ ℕ) ∈ ran ℤ)
137135, 136mpan2 702 . . . . . . . . . . . . . . . . . 18 (𝑘 ∈ ran ℤ → (𝑘 ∩ ℕ) ∈ ran ℤ)
138 uzn0 11439 . . . . . . . . . . . . . . . . . 18 ((𝑘 ∩ ℕ) ∈ ran ℤ → (𝑘 ∩ ℕ) ≠ ∅)
139137, 138syl 17 . . . . . . . . . . . . . . . . 17 (𝑘 ∈ ran ℤ → (𝑘 ∩ ℕ) ≠ ∅)
140 n0 3793 . . . . . . . . . . . . . . . . 17 ((𝑘 ∩ ℕ) ≠ ∅ ↔ ∃𝑦 𝑦 ∈ (𝑘 ∩ ℕ))
141139, 140sylib 206 . . . . . . . . . . . . . . . 16 (𝑘 ∈ ran ℤ → ∃𝑦 𝑦 ∈ (𝑘 ∩ ℕ))
142 fnfun 5787 . . . . . . . . . . . . . . . . . . 19 (𝐹 Fn ℕ → Fun 𝐹)
143 inss2 3699 . . . . . . . . . . . . . . . . . . . 20 (𝑘 ∩ ℕ) ⊆ ℕ
144 fndm 5789 . . . . . . . . . . . . . . . . . . . 20 (𝐹 Fn ℕ → dom 𝐹 = ℕ)
145143, 144syl5sseqr 3521 . . . . . . . . . . . . . . . . . . 19 (𝐹 Fn ℕ → (𝑘 ∩ ℕ) ⊆ dom 𝐹)
146 funfvima2 6273 . . . . . . . . . . . . . . . . . . 19 ((Fun 𝐹 ∧ (𝑘 ∩ ℕ) ⊆ dom 𝐹) → (𝑦 ∈ (𝑘 ∩ ℕ) → (𝐹𝑦) ∈ (𝐹 “ (𝑘 ∩ ℕ))))
147142, 145, 146syl2anc 690 . . . . . . . . . . . . . . . . . 18 (𝐹 Fn ℕ → (𝑦 ∈ (𝑘 ∩ ℕ) → (𝐹𝑦) ∈ (𝐹 “ (𝑘 ∩ ℕ))))
148 ne0i 3783 . . . . . . . . . . . . . . . . . 18 ((𝐹𝑦) ∈ (𝐹 “ (𝑘 ∩ ℕ)) → (𝐹 “ (𝑘 ∩ ℕ)) ≠ ∅)
149147, 148syl6 34 . . . . . . . . . . . . . . . . 17 (𝐹 Fn ℕ → (𝑦 ∈ (𝑘 ∩ ℕ) → (𝐹 “ (𝑘 ∩ ℕ)) ≠ ∅))
150149exlimdv 1814 . . . . . . . . . . . . . . . 16 (𝐹 Fn ℕ → (∃𝑦 𝑦 ∈ (𝑘 ∩ ℕ) → (𝐹 “ (𝑘 ∩ ℕ)) ≠ ∅))
151141, 150syl5 33 . . . . . . . . . . . . . . 15 (𝐹 Fn ℕ → (𝑘 ∈ ran ℤ → (𝐹 “ (𝑘 ∩ ℕ)) ≠ ∅))
152151imp 443 . . . . . . . . . . . . . 14 ((𝐹 Fn ℕ ∧ 𝑘 ∈ ran ℤ) → (𝐹 “ (𝑘 ∩ ℕ)) ≠ ∅)
153 ssn0 3831 . . . . . . . . . . . . . 14 (((𝐹 “ (𝑘 ∩ ℕ)) ⊆ (𝐹𝑘) ∧ (𝐹 “ (𝑘 ∩ ℕ)) ≠ ∅) → (𝐹𝑘) ≠ ∅)
154130, 152, 153sylancr 693 . . . . . . . . . . . . 13 ((𝐹 Fn ℕ ∧ 𝑘 ∈ ran ℤ) → (𝐹𝑘) ≠ ∅)
155 ssn0 3831 . . . . . . . . . . . . . 14 (((𝐹𝑘) ⊆ 𝑟 ∧ (𝐹𝑘) ≠ ∅) → 𝑟 ≠ ∅)
156155expcom 449 . . . . . . . . . . . . 13 ((𝐹𝑘) ≠ ∅ → ((𝐹𝑘) ⊆ 𝑟 𝑟 ≠ ∅))
157154, 156syl 17 . . . . . . . . . . . 12 ((𝐹 Fn ℕ ∧ 𝑘 ∈ ran ℤ) → ((𝐹𝑘) ⊆ 𝑟 𝑟 ≠ ∅))
158157rexlimdva 2917 . . . . . . . . . . 11 (𝐹 Fn ℕ → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟 𝑟 ≠ ∅))
159127, 158syl 17 . . . . . . . . . 10 (𝜑 → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟 𝑟 ≠ ∅))
160159adantr 479 . . . . . . . . 9 ((𝜑 ∧ (∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ 𝑟 ∈ Fin)) → (∃𝑘 ∈ ran ℤ(𝐹𝑘) ⊆ 𝑟 𝑟 ≠ ∅))
161125, 160mpd 15 . . . . . . . 8 ((𝜑 ∧ (∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ 𝑟 ∈ Fin)) → 𝑟 ≠ ∅)
162161necomd 2741 . . . . . . 7 ((𝜑 ∧ (∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ 𝑟 ∈ Fin)) → ∅ ≠ 𝑟)
163162neneqd 2691 . . . . . 6 ((𝜑 ∧ (∀𝑘𝑟𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ∧ 𝑟 ∈ Fin)) → ¬ ∅ = 𝑟)
16431, 163sylan2b 490 . . . . 5 ((𝜑𝑟 ∈ (𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∩ Fin)) → ¬ ∅ = 𝑟)
165164nrexdv 2888 . . . 4 (𝜑 → ¬ ∃𝑟 ∈ (𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∩ Fin)∅ = 𝑟)
166 0ex 4617 . . . . 5 ∅ ∈ V
167 zex 11125 . . . . . . . 8 ℤ ∈ V
168167pwex 4673 . . . . . . 7 𝒫 ℤ ∈ V
169 frn 5851 . . . . . . . 8 (ℤ:ℤ⟶𝒫 ℤ → ran ℤ ⊆ 𝒫 ℤ)
17056, 169ax-mp 5 . . . . . . 7 ran ℤ ⊆ 𝒫 ℤ
171168, 170ssexi 4630 . . . . . 6 ran ℤ ∈ V
172171abrexex 6906 . . . . 5 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∈ V
173 elfi 8076 . . . . 5 ((∅ ∈ V ∧ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∈ V) → (∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) ↔ ∃𝑟 ∈ (𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∩ Fin)∅ = 𝑟))
174166, 172, 173mp2an 703 . . . 4 (∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) ↔ ∃𝑟 ∈ (𝒫 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∩ Fin)∅ = 𝑟)
175165, 174sylnibr 317 . . 3 (𝜑 → ¬ ∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}))
176 cmptop 20932 . . . . . 6 (𝐽 ∈ Comp → 𝐽 ∈ Top)
177 cmpfi 20945 . . . . . 6 (𝐽 ∈ Top → (𝐽 ∈ Comp ↔ ∀𝑚 ∈ 𝒫 (Clsd‘𝐽)(¬ ∅ ∈ (fi‘𝑚) → 𝑚 ≠ ∅)))
178176, 177syl 17 . . . . 5 (𝐽 ∈ Comp → (𝐽 ∈ Comp ↔ ∀𝑚 ∈ 𝒫 (Clsd‘𝐽)(¬ ∅ ∈ (fi‘𝑚) → 𝑚 ≠ ∅)))
179178ibi 254 . . . 4 (𝐽 ∈ Comp → ∀𝑚 ∈ 𝒫 (Clsd‘𝐽)(¬ ∅ ∈ (fi‘𝑚) → 𝑚 ≠ ∅))
180 fveq2 5986 . . . . . . . 8 (𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → (fi‘𝑚) = (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}))
181180eleq2d 2577 . . . . . . 7 (𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → (∅ ∈ (fi‘𝑚) ↔ ∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})))
182181notbid 306 . . . . . 6 (𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → (¬ ∅ ∈ (fi‘𝑚) ↔ ¬ ∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})))
183 inteq 4311 . . . . . . . 8 (𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → 𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})
184183neeq1d 2745 . . . . . . 7 (𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → ( 𝑚 ≠ ∅ ↔ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ≠ ∅))
185 n0 3793 . . . . . . 7 ( {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ≠ ∅ ↔ ∃𝑦 𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})
186184, 185syl6bb 274 . . . . . 6 (𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → ( 𝑚 ≠ ∅ ↔ ∃𝑦 𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}))
187182, 186imbi12d 332 . . . . 5 (𝑚 = {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → ((¬ ∅ ∈ (fi‘𝑚) → 𝑚 ≠ ∅) ↔ (¬ ∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) → ∃𝑦 𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})))
188187rspccv 3183 . . . 4 (∀𝑚 ∈ 𝒫 (Clsd‘𝐽)(¬ ∅ ∈ (fi‘𝑚) → 𝑚 ≠ ∅) → ({𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∈ 𝒫 (Clsd‘𝐽) → (¬ ∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) → ∃𝑦 𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})))
189179, 188syl 17 . . 3 (𝐽 ∈ Comp → ({𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ∈ 𝒫 (Clsd‘𝐽) → (¬ ∅ ∈ (fi‘{𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) → ∃𝑦 𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})))
1901, 25, 175, 189syl3c 63 . 2 (𝜑 → ∃𝑦 𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})
191 lmrel 20768 . . 3 Rel (⇝𝑡𝐽)
192 r19.23v 2909 . . . . . 6 (∀𝑢 ∈ ran ℤ(𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘) ↔ (∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘))
193192albii 1722 . . . . 5 (∀𝑘𝑢 ∈ ran ℤ(𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘) ↔ ∀𝑘(∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘))
194 fvex 5996 . . . . . . . 8 ((cls‘𝐽)‘(𝐹𝑢)) ∈ V
195 eleq2 2581 . . . . . . . 8 (𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → (𝑦𝑘𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))))
196194, 195ceqsalv 3110 . . . . . . 7 (∀𝑘(𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘) ↔ 𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢)))
197196ralbii 2867 . . . . . 6 (∀𝑢 ∈ ran ℤ𝑘(𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘) ↔ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢)))
198 ralcom4 3101 . . . . . 6 (∀𝑢 ∈ ran ℤ𝑘(𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘) ↔ ∀𝑘𝑢 ∈ ran ℤ(𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘))
199197, 198bitr3i 264 . . . . 5 (∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∀𝑘𝑢 ∈ ran ℤ(𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘))
200 vex 3080 . . . . . 6 𝑦 ∈ V
201200elintab 4320 . . . . 5 (𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ↔ ∀𝑘(∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦𝑘))
202193, 199, 2013bitr4i 290 . . . 4 (∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢)) ↔ 𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))})
203 eqid 2514 . . . . . . . . . . 11 ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹 “ ℕ))
204 imaeq2 5271 . . . . . . . . . . . . . 14 (𝑢 = ℕ → (𝐹𝑢) = (𝐹 “ ℕ))
205204fveq2d 5990 . . . . . . . . . . . . 13 (𝑢 = ℕ → ((cls‘𝐽)‘(𝐹𝑢)) = ((cls‘𝐽)‘(𝐹 “ ℕ)))
206205eqeq2d 2524 . . . . . . . . . . . 12 (𝑢 = ℕ → (((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹 “ ℕ))))
207206rspcev 3186 . . . . . . . . . . 11 ((ℕ ∈ ran ℤ ∧ ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹 “ ℕ))) → ∃𝑢 ∈ ran ℤ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹𝑢)))
208135, 203, 207mp2an 703 . . . . . . . . . 10 𝑢 ∈ ran ℤ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹𝑢))
209 fvex 5996 . . . . . . . . . . 11 ((cls‘𝐽)‘(𝐹 “ ℕ)) ∈ V
210 eqeq1 2518 . . . . . . . . . . . 12 (𝑘 = ((cls‘𝐽)‘(𝐹 “ ℕ)) → (𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹𝑢))))
211210rexbidv 2938 . . . . . . . . . . 11 (𝑘 = ((cls‘𝐽)‘(𝐹 “ ℕ)) → (∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢)) ↔ ∃𝑢 ∈ ran ℤ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹𝑢))))
212209, 211elab 3223 . . . . . . . . . 10 (((cls‘𝐽)‘(𝐹 “ ℕ)) ∈ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ↔ ∃𝑢 ∈ ran ℤ((cls‘𝐽)‘(𝐹 “ ℕ)) = ((cls‘𝐽)‘(𝐹𝑢)))
213208, 212mpbir 219 . . . . . . . . 9 ((cls‘𝐽)‘(𝐹 “ ℕ)) ∈ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}
214 intss1 4325 . . . . . . . . 9 (((cls‘𝐽)‘(𝐹 “ ℕ)) ∈ {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} → {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ⊆ ((cls‘𝐽)‘(𝐹 “ ℕ)))
215213, 214ax-mp 5 . . . . . . . 8 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ⊆ ((cls‘𝐽)‘(𝐹 “ ℕ))
216 imassrn 5286 . . . . . . . . . . 11 (𝐹 “ ℕ) ⊆ ran 𝐹
217216, 14syl5ss 3483 . . . . . . . . . 10 (𝜑 → (𝐹 “ ℕ) ⊆ 𝐽)
21816clsss3 20597 . . . . . . . . . 10 ((𝐽 ∈ Top ∧ (𝐹 “ ℕ) ⊆ 𝐽) → ((cls‘𝐽)‘(𝐹 “ ℕ)) ⊆ 𝐽)
2197, 217, 218syl2anc 690 . . . . . . . . 9 (𝜑 → ((cls‘𝐽)‘(𝐹 “ ℕ)) ⊆ 𝐽)
220219, 13sseqtr4d 3509 . . . . . . . 8 (𝜑 → ((cls‘𝐽)‘(𝐹 “ ℕ)) ⊆ 𝑋)
221215, 220syl5ss 3483 . . . . . . 7 (𝜑 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))} ⊆ 𝑋)
222221sselda 3472 . . . . . 6 ((𝜑𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) → 𝑦𝑋)
223202, 222sylan2b 490 . . . . 5 ((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) → 𝑦𝑋)
224 heibor1.5 . . . . . . . . . . . 12 (𝜑𝐹 ∈ (Cau‘𝐷))
225 1zzd 11147 . . . . . . . . . . . . 13 (𝜑 → 1 ∈ ℤ)
226131, 4, 225iscau3 22772 . . . . . . . . . . . 12 (𝜑 → (𝐹 ∈ (Cau‘𝐷) ↔ (𝐹 ∈ (𝑋pm ℂ) ∧ ∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑋 ∧ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦))))
227224, 226mpbid 220 . . . . . . . . . . 11 (𝜑 → (𝐹 ∈ (𝑋pm ℂ) ∧ ∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑋 ∧ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦)))
228227simprd 477 . . . . . . . . . 10 (𝜑 → ∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑋 ∧ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦))
229 simp3 1055 . . . . . . . . . . . . 13 ((𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑋 ∧ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦) → ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦)
230229ralimi 2840 . . . . . . . . . . . 12 (∀𝑘 ∈ (ℤ𝑚)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑋 ∧ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦) → ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦)
231230reximi 2898 . . . . . . . . . . 11 (∃𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑋 ∧ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦) → ∃𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦)
232231ralimi 2840 . . . . . . . . . 10 (∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)(𝑘 ∈ dom 𝐹 ∧ (𝐹𝑘) ∈ 𝑋 ∧ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦) → ∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦)
233228, 232syl 17 . . . . . . . . 9 (𝜑 → ∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦)
234233adantr 479 . . . . . . . 8 ((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) → ∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦)
235 rphalfcl 11596 . . . . . . . 8 (𝑟 ∈ ℝ+ → (𝑟 / 2) ∈ ℝ+)
236 breq2 4485 . . . . . . . . . . 11 (𝑦 = (𝑟 / 2) → (((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦 ↔ ((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2)))
2372362ralbidv 2876 . . . . . . . . . 10 (𝑦 = (𝑟 / 2) → (∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦 ↔ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2)))
238237rexbidv 2938 . . . . . . . . 9 (𝑦 = (𝑟 / 2) → (∃𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦 ↔ ∃𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2)))
239238rspccva 3185 . . . . . . . 8 ((∀𝑦 ∈ ℝ+𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < 𝑦 ∧ (𝑟 / 2) ∈ ℝ+) → ∃𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2))
240234, 235, 239syl2an 492 . . . . . . 7 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ 𝑟 ∈ ℝ+) → ∃𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2))
241 ffun 5846 . . . . . . . . . . . . 13 (𝐹:ℕ⟶𝑋 → Fun 𝐹)
2429, 241syl 17 . . . . . . . . . . . 12 (𝜑 → Fun 𝐹)
243242ad2antrr 757 . . . . . . . . . . 11 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → Fun 𝐹)
2447ad2antrr 757 . . . . . . . . . . . 12 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → 𝐽 ∈ Top)
245 imassrn 5286 . . . . . . . . . . . . . 14 (𝐹 “ (ℤ𝑚)) ⊆ ran 𝐹
246245, 14syl5ss 3483 . . . . . . . . . . . . 13 (𝜑 → (𝐹 “ (ℤ𝑚)) ⊆ 𝐽)
247246ad2antrr 757 . . . . . . . . . . . 12 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (𝐹 “ (ℤ𝑚)) ⊆ 𝐽)
248 nnz 11138 . . . . . . . . . . . . . . 15 (𝑚 ∈ ℕ → 𝑚 ∈ ℤ)
249 fnfvelrn 6147 . . . . . . . . . . . . . . 15 ((ℤ Fn ℤ ∧ 𝑚 ∈ ℤ) → (ℤ𝑚) ∈ ran ℤ)
25058, 248, 249sylancr 693 . . . . . . . . . . . . . 14 (𝑚 ∈ ℕ → (ℤ𝑚) ∈ ran ℤ)
251250ad2antll 760 . . . . . . . . . . . . 13 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (ℤ𝑚) ∈ ran ℤ)
252 simplr 787 . . . . . . . . . . . . 13 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢)))
253 imaeq2 5271 . . . . . . . . . . . . . . . 16 (𝑢 = (ℤ𝑚) → (𝐹𝑢) = (𝐹 “ (ℤ𝑚)))
254253fveq2d 5990 . . . . . . . . . . . . . . 15 (𝑢 = (ℤ𝑚) → ((cls‘𝐽)‘(𝐹𝑢)) = ((cls‘𝐽)‘(𝐹 “ (ℤ𝑚))))
255254eleq2d 2577 . . . . . . . . . . . . . 14 (𝑢 = (ℤ𝑚) → (𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢)) ↔ 𝑦 ∈ ((cls‘𝐽)‘(𝐹 “ (ℤ𝑚)))))
256255rspcv 3182 . . . . . . . . . . . . 13 ((ℤ𝑚) ∈ ran ℤ → (∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢)) → 𝑦 ∈ ((cls‘𝐽)‘(𝐹 “ (ℤ𝑚)))))
257251, 252, 256sylc 62 . . . . . . . . . . . 12 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → 𝑦 ∈ ((cls‘𝐽)‘(𝐹 “ (ℤ𝑚))))
2584ad2antrr 757 . . . . . . . . . . . . 13 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → 𝐷 ∈ (∞Met‘𝑋))
259223adantr 479 . . . . . . . . . . . . 13 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → 𝑦𝑋)
260235ad2antrl 759 . . . . . . . . . . . . . 14 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (𝑟 / 2) ∈ ℝ+)
261260rpxrd 11611 . . . . . . . . . . . . 13 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (𝑟 / 2) ∈ ℝ*)
2625blopn 22038 . . . . . . . . . . . . 13 ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑦𝑋 ∧ (𝑟 / 2) ∈ ℝ*) → (𝑦(ball‘𝐷)(𝑟 / 2)) ∈ 𝐽)
263258, 259, 261, 262syl3anc 1317 . . . . . . . . . . . 12 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (𝑦(ball‘𝐷)(𝑟 / 2)) ∈ 𝐽)
264 blcntr 21951 . . . . . . . . . . . . 13 ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑦𝑋 ∧ (𝑟 / 2) ∈ ℝ+) → 𝑦 ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))
265258, 259, 260, 264syl3anc 1317 . . . . . . . . . . . 12 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → 𝑦 ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))
26616clsndisj 20613 . . . . . . . . . . . 12 (((𝐽 ∈ Top ∧ (𝐹 “ (ℤ𝑚)) ⊆ 𝐽𝑦 ∈ ((cls‘𝐽)‘(𝐹 “ (ℤ𝑚)))) ∧ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∈ 𝐽𝑦 ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))) → ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) ≠ ∅)
267244, 247, 257, 263, 265, 266syl32anc 1325 . . . . . . . . . . 11 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) ≠ ∅)
268 n0 3793 . . . . . . . . . . . 12 (((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) ≠ ∅ ↔ ∃𝑛 𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))))
269 inss2 3699 . . . . . . . . . . . . . . . . 17 ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) ⊆ (𝐹 “ (ℤ𝑚))
270269sseli 3468 . . . . . . . . . . . . . . . 16 (𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) → 𝑛 ∈ (𝐹 “ (ℤ𝑚)))
271 fvelima 6041 . . . . . . . . . . . . . . . 16 ((Fun 𝐹𝑛 ∈ (𝐹 “ (ℤ𝑚))) → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) = 𝑛)
272270, 271sylan2 489 . . . . . . . . . . . . . . 15 ((Fun 𝐹𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚)))) → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) = 𝑛)
273 inss1 3698 . . . . . . . . . . . . . . . . . . 19 ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) ⊆ (𝑦(ball‘𝐷)(𝑟 / 2))
274273sseli 3468 . . . . . . . . . . . . . . . . . 18 (𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) → 𝑛 ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))
275274adantl 480 . . . . . . . . . . . . . . . . 17 ((Fun 𝐹𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚)))) → 𝑛 ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))
276 eleq1a 2587 . . . . . . . . . . . . . . . . 17 (𝑛 ∈ (𝑦(ball‘𝐷)(𝑟 / 2)) → ((𝐹𝑘) = 𝑛 → (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))))
277275, 276syl 17 . . . . . . . . . . . . . . . 16 ((Fun 𝐹𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚)))) → ((𝐹𝑘) = 𝑛 → (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))))
278277reximdv 2903 . . . . . . . . . . . . . . 15 ((Fun 𝐹𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚)))) → (∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) = 𝑛 → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))))
279272, 278mpd 15 . . . . . . . . . . . . . 14 ((Fun 𝐹𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚)))) → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))
280279ex 448 . . . . . . . . . . . . 13 (Fun 𝐹 → (𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))))
281280exlimdv 1814 . . . . . . . . . . . 12 (Fun 𝐹 → (∃𝑛 𝑛 ∈ ((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))))
282268, 281syl5bi 230 . . . . . . . . . . 11 (Fun 𝐹 → (((𝑦(ball‘𝐷)(𝑟 / 2)) ∩ (𝐹 “ (ℤ𝑚))) ≠ ∅ → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))))
283243, 267, 282sylc 62 . . . . . . . . . 10 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))
284 r19.29 2958 . . . . . . . . . . 11 ((∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) → ∃𝑘 ∈ (ℤ𝑚)(∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))))
285 uznnssnn 11471 . . . . . . . . . . . . . 14 (𝑚 ∈ ℕ → (ℤ𝑚) ⊆ ℕ)
286285ad2antll 760 . . . . . . . . . . . . 13 (((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (ℤ𝑚) ⊆ ℕ)
287 simprlr 798 . . . . . . . . . . . . . . . . . . . . . . 23 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))
2884ad3antrrr 761 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝐷 ∈ (∞Met‘𝑋))
289 simplrl 795 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝑟 ∈ ℝ+)
290289, 235syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (𝑟 / 2) ∈ ℝ+)
291290rpxrd 11611 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (𝑟 / 2) ∈ ℝ*)
292 simpllr 794 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝑦𝑋)
2939ad3antrrr 761 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝐹:ℕ⟶𝑋)
294 eluznn 11494 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝑚 ∈ ℕ ∧ 𝑘 ∈ (ℤ𝑚)) → 𝑘 ∈ ℕ)
295294ad2ant2lr 779 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑟 ∈ ℝ+𝑚 ∈ ℕ) ∧ (𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))) → 𝑘 ∈ ℕ)
296295ad2ant2lr 779 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝑘 ∈ ℕ)
297293, 296ffvelrnd 6151 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (𝐹𝑘) ∈ 𝑋)
298 elbl3 21930 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝐷 ∈ (∞Met‘𝑋) ∧ (𝑟 / 2) ∈ ℝ*) ∧ (𝑦𝑋 ∧ (𝐹𝑘) ∈ 𝑋)) → ((𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)) ↔ ((𝐹𝑘)𝐷𝑦) < (𝑟 / 2)))
299288, 291, 292, 297, 298syl22anc 1318 . . . . . . . . . . . . . . . . . . . . . . 23 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)) ↔ ((𝐹𝑘)𝐷𝑦) < (𝑟 / 2)))
300287, 299mpbid 220 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((𝐹𝑘)𝐷𝑦) < (𝑟 / 2))
3012ad3antrrr 761 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝐷 ∈ (Met‘𝑋))
302 simprr 791 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝑛 ∈ (ℤ𝑘))
303 eluznn 11494 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑘 ∈ ℕ ∧ 𝑛 ∈ (ℤ𝑘)) → 𝑛 ∈ ℕ)
304296, 302, 303syl2anc 690 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝑛 ∈ ℕ)
305293, 304ffvelrnd 6151 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (𝐹𝑛) ∈ 𝑋)
306 metcl 21870 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐷 ∈ (Met‘𝑋) ∧ (𝐹𝑘) ∈ 𝑋 ∧ (𝐹𝑛) ∈ 𝑋) → ((𝐹𝑘)𝐷(𝐹𝑛)) ∈ ℝ)
307301, 297, 305, 306syl3anc 1317 . . . . . . . . . . . . . . . . . . . . . . 23 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((𝐹𝑘)𝐷(𝐹𝑛)) ∈ ℝ)
308 metcl 21870 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐷 ∈ (Met‘𝑋) ∧ (𝐹𝑘) ∈ 𝑋𝑦𝑋) → ((𝐹𝑘)𝐷𝑦) ∈ ℝ)
309301, 297, 292, 308syl3anc 1317 . . . . . . . . . . . . . . . . . . . . . . 23 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((𝐹𝑘)𝐷𝑦) ∈ ℝ)
310290rpred 11610 . . . . . . . . . . . . . . . . . . . . . . 23 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (𝑟 / 2) ∈ ℝ)
311 lt2add 10260 . . . . . . . . . . . . . . . . . . . . . . 23 (((((𝐹𝑘)𝐷(𝐹𝑛)) ∈ ℝ ∧ ((𝐹𝑘)𝐷𝑦) ∈ ℝ) ∧ ((𝑟 / 2) ∈ ℝ ∧ (𝑟 / 2) ∈ ℝ)) → ((((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ ((𝐹𝑘)𝐷𝑦) < (𝑟 / 2)) → (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < ((𝑟 / 2) + (𝑟 / 2))))
312307, 309, 310, 310, 311syl22anc 1318 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ ((𝐹𝑘)𝐷𝑦) < (𝑟 / 2)) → (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < ((𝑟 / 2) + (𝑟 / 2))))
313300, 312mpan2d 705 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < ((𝑟 / 2) + (𝑟 / 2))))
314289rpcnd 11612 . . . . . . . . . . . . . . . . . . . . . . 23 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝑟 ∈ ℂ)
3153142halvesd 11031 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((𝑟 / 2) + (𝑟 / 2)) = 𝑟)
316315breq2d 4493 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < ((𝑟 / 2) + (𝑟 / 2)) ↔ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < 𝑟))
317313, 316sylibd 227 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < 𝑟))
318 mettri2 21879 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐷 ∈ (Met‘𝑋) ∧ ((𝐹𝑘) ∈ 𝑋 ∧ (𝐹𝑛) ∈ 𝑋𝑦𝑋)) → ((𝐹𝑛)𝐷𝑦) ≤ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)))
319301, 297, 305, 292, 318syl13anc 1319 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((𝐹𝑛)𝐷𝑦) ≤ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)))
320 metcl 21870 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐷 ∈ (Met‘𝑋) ∧ (𝐹𝑛) ∈ 𝑋𝑦𝑋) → ((𝐹𝑛)𝐷𝑦) ∈ ℝ)
321301, 305, 292, 320syl3anc 1317 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((𝐹𝑛)𝐷𝑦) ∈ ℝ)
322307, 309readdcld 9822 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) ∈ ℝ)
323289rpred 11610 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → 𝑟 ∈ ℝ)
324 lelttr 9876 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝐹𝑛)𝐷𝑦) ∈ ℝ ∧ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) ∈ ℝ ∧ 𝑟 ∈ ℝ) → ((((𝐹𝑛)𝐷𝑦) ≤ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) ∧ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < 𝑟) → ((𝐹𝑛)𝐷𝑦) < 𝑟))
325321, 322, 323, 324syl3anc 1317 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((((𝐹𝑛)𝐷𝑦) ≤ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) ∧ (((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < 𝑟) → ((𝐹𝑛)𝐷𝑦) < 𝑟))
326319, 325mpand 706 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → ((((𝐹𝑘)𝐷(𝐹𝑛)) + ((𝐹𝑘)𝐷𝑦)) < 𝑟 → ((𝐹𝑛)𝐷𝑦) < 𝑟))
327317, 326syld 45 . . . . . . . . . . . . . . . . . . 19 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ ((𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) ∧ 𝑛 ∈ (ℤ𝑘))) → (((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ((𝐹𝑛)𝐷𝑦) < 𝑟))
328327anassrs 677 . . . . . . . . . . . . . . . . . 18 (((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ (𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))) ∧ 𝑛 ∈ (ℤ𝑘)) → (((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ((𝐹𝑛)𝐷𝑦) < 𝑟))
329328ralimdva 2849 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ (𝑘 ∈ (ℤ𝑚) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)))) → (∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
330329expr 640 . . . . . . . . . . . . . . . 16 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ 𝑘 ∈ (ℤ𝑚)) → ((𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)) → (∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟)))
331330com23 83 . . . . . . . . . . . . . . 15 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ 𝑘 ∈ (ℤ𝑚)) → (∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ((𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2)) → ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟)))
332331impd 445 . . . . . . . . . . . . . 14 ((((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) ∧ 𝑘 ∈ (ℤ𝑚)) → ((∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) → ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
333332reximdva 2904 . . . . . . . . . . . . 13 (((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (∃𝑘 ∈ (ℤ𝑚)(∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) → ∃𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
334 ssrexv 3534 . . . . . . . . . . . . 13 ((ℤ𝑚) ⊆ ℕ → (∃𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟 → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
335286, 333, 334sylsyld 58 . . . . . . . . . . . 12 (((𝜑𝑦𝑋) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (∃𝑘 ∈ (ℤ𝑚)(∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
336223, 335syldanl 730 . . . . . . . . . . 11 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (∃𝑘 ∈ (ℤ𝑚)(∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ (𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
337284, 336syl5 33 . . . . . . . . . 10 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → ((∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) ∧ ∃𝑘 ∈ (ℤ𝑚)(𝐹𝑘) ∈ (𝑦(ball‘𝐷)(𝑟 / 2))) → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
338283, 337mpan2d 705 . . . . . . . . 9 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ (𝑟 ∈ ℝ+𝑚 ∈ ℕ)) → (∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
339338anassrs 677 . . . . . . . 8 ((((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ 𝑟 ∈ ℝ+) ∧ 𝑚 ∈ ℕ) → (∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
340339rexlimdva 2917 . . . . . . 7 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ 𝑟 ∈ ℝ+) → (∃𝑚 ∈ ℕ ∀𝑘 ∈ (ℤ𝑚)∀𝑛 ∈ (ℤ𝑘)((𝐹𝑘)𝐷(𝐹𝑛)) < (𝑟 / 2) → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟))
341240, 340mpd 15 . . . . . 6 (((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) ∧ 𝑟 ∈ ℝ+) → ∃𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟)
342341ralrimiva 2853 . . . . 5 ((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) → ∀𝑟 ∈ ℝ+𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟)
343 eqidd 2515 . . . . . . 7 ((𝜑𝑛 ∈ ℕ) → (𝐹𝑛) = (𝐹𝑛))
3445, 4, 131, 225, 343, 9lmmbrf 22756 . . . . . 6 (𝜑 → (𝐹(⇝𝑡𝐽)𝑦 ↔ (𝑦𝑋 ∧ ∀𝑟 ∈ ℝ+𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟)))
345344adantr 479 . . . . 5 ((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) → (𝐹(⇝𝑡𝐽)𝑦 ↔ (𝑦𝑋 ∧ ∀𝑟 ∈ ℝ+𝑘 ∈ ℕ ∀𝑛 ∈ (ℤ𝑘)((𝐹𝑛)𝐷𝑦) < 𝑟)))
346223, 342, 345mpbir2and 958 . . . 4 ((𝜑 ∧ ∀𝑢 ∈ ran ℤ𝑦 ∈ ((cls‘𝐽)‘(𝐹𝑢))) → 𝐹(⇝𝑡𝐽)𝑦)
347202, 346sylan2br 491 . . 3 ((𝜑𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) → 𝐹(⇝𝑡𝐽)𝑦)
348 releldm 5170 . . 3 ((Rel (⇝𝑡𝐽) ∧ 𝐹(⇝𝑡𝐽)𝑦) → 𝐹 ∈ dom (⇝𝑡𝐽))
349191, 347, 348sylancr 693 . 2 ((𝜑𝑦 {𝑘 ∣ ∃𝑢 ∈ ran ℤ𝑘 = ((cls‘𝐽)‘(𝐹𝑢))}) → 𝐹 ∈ dom (⇝𝑡𝐽))
350190, 349exlimddv 1816 1 (𝜑𝐹 ∈ dom (⇝𝑡𝐽))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 194  wa 382  w3a 1030  wal 1472   = wceq 1474  wex 1694  wcel 1938  {cab 2500  wne 2684  wral 2800  wrex 2801  Vcvv 3077  cun 3442  cin 3443  wss 3444  c0 3777  𝒫 cpw 4011  {csn 4028   cuni 4270   cint 4308   class class class wbr 4481  dom cdm 4932  ran crn 4933  cima 4935  Rel wrel 4937  Fun wfun 5683   Fn wfn 5684  wf 5685  cfv 5689  (class class class)co 6425  pm cpm 7619  Fincfn 7715  ficfi 8073  cc 9687  cr 9688  0cc0 9689  1c1 9690   + caddc 9692  *cxr 9826   < clt 9827  cle 9828   / cdiv 10431  cn 10773  2c2 10823  cz 11116  cuz 11423  +crp 11570  ∞Metcxmt 19477  Metcme 19478  ballcbl 19479  MetOpencmopn 19482  Topctop 20441  Clsdccld 20554  clsccl 20556  𝑡clm 20764  Compccmp 20923  Caucca 22747
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1700  ax-4 1713  ax-5 1793  ax-6 1838  ax-7 1885  ax-8 1940  ax-9 1947  ax-10 1966  ax-11 1971  ax-12 1983  ax-13 2137  ax-ext 2494  ax-rep 4597  ax-sep 4607  ax-nul 4616  ax-pow 4668  ax-pr 4732  ax-un 6721  ax-cnex 9745  ax-resscn 9746  ax-1cn 9747  ax-icn 9748  ax-addcl 9749  ax-addrcl 9750  ax-mulcl 9751  ax-mulrcl 9752  ax-mulcom 9753  ax-addass 9754  ax-mulass 9755  ax-distr 9756  ax-i2m1 9757  ax-1ne0 9758  ax-1rid 9759  ax-rnegex 9760  ax-rrecex 9761  ax-cnre 9762  ax-pre-lttri 9763  ax-pre-lttrn 9764  ax-pre-ltadd 9765  ax-pre-mulgt0 9766  ax-pre-sup 9767
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 1699  df-sb 1831  df-eu 2366  df-mo 2367  df-clab 2501  df-cleq 2507  df-clel 2510  df-nfc 2644  df-ne 2686  df-nel 2687  df-ral 2805  df-rex 2806  df-reu 2807  df-rmo 2808  df-rab 2809  df-v 3079  df-sbc 3307  df-csb 3404  df-dif 3447  df-un 3449  df-in 3451  df-ss 3458  df-pss 3460  df-nul 3778  df-if 3940  df-pw 4013  df-sn 4029  df-pr 4031  df-tp 4033  df-op 4035  df-uni 4271  df-int 4309  df-iun 4355  df-iin 4356  df-br 4482  df-opab 4542  df-mpt 4543  df-tr 4579  df-eprel 4843  df-id 4847  df-po 4853  df-so 4854  df-fr 4891  df-we 4893  df-xp 4938  df-rel 4939  df-cnv 4940  df-co 4941  df-dm 4942  df-rn 4943  df-res 4944  df-ima 4945  df-pred 5487  df-ord 5533  df-on 5534  df-lim 5535  df-suc 5536  df-iota 5653  df-fun 5691  df-fn 5692  df-f 5693  df-f1 5694  df-fo 5695  df-f1o 5696  df-fv 5697  df-riota 6387  df-ov 6428  df-oprab 6429  df-mpt2 6430  df-om 6832  df-1st 6932  df-2nd 6933  df-wrecs 7167  df-recs 7229  df-rdg 7267  df-1o 7321  df-2o 7322  df-oadd 7325  df-er 7503  df-map 7620  df-pm 7621  df-en 7716  df-dom 7717  df-sdom 7718  df-fin 7719  df-fi 8074  df-sup 8105  df-inf 8106  df-pnf 9829  df-mnf 9830  df-xr 9831  df-ltxr 9832  df-le 9833  df-sub 10017  df-neg 10018  df-div 10432  df-nn 10774  df-2 10832  df-n0 11046  df-z 11117  df-uz 11424  df-q 11527  df-rp 11571  df-xneg 11684  df-xadd 11685  df-xmul 11686  df-topgen 15832  df-psmet 19484  df-xmet 19485  df-met 19486  df-bl 19487  df-mopn 19488  df-top 20445  df-bases 20446  df-topon 20447  df-cld 20557  df-ntr 20558  df-cls 20559  df-lm 20767  df-cmp 20924  df-cau 22750
This theorem is referenced by:  heibor1  32661
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