Mathbox for Brendan Leahy < Previous   Next > Nearby theorems Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  heicant Structured version   Visualization version   GIF version

Theorem heicant 32614
 Description: Heine-Cantor theorem: a continuous mapping between metric spaces whose domain is compact is uniformly continuous. Theorem on [Rosenlicht] p. 80. (Contributed by Brendan Leahy, 13-Aug-2018.) (Proof shortened by AV, 27-Sep-2020.)
Hypotheses
Ref Expression
heicant.c (𝜑𝐶 ∈ (∞Met‘𝑋))
heicant.d (𝜑𝐷 ∈ (∞Met‘𝑌))
heicant.j (𝜑 → (MetOpen‘𝐶) ∈ Comp)
heicant.x (𝜑𝑋 ≠ ∅)
heicant.y (𝜑𝑌 ≠ ∅)
Assertion
Ref Expression
heicant (𝜑 → ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) = ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)))

Proof of Theorem heicant
Dummy variables 𝑏 𝑐 𝑑 𝑓 𝑔 𝑝 𝑠 𝑤 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 breq2 4587 . . . . . . . . . . 11 (𝑑 = 𝑦 → (((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑 ↔ ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))
21imbi2d 329 . . . . . . . . . 10 (𝑑 = 𝑦 → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦)))
322ralbidv 2972 . . . . . . . . 9 (𝑑 = 𝑦 → (∀𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ∀𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦)))
43rexbidv 3034 . . . . . . . 8 (𝑑 = 𝑦 → (∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦)))
54cbvralv 3147 . . . . . . 7 (∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ∀𝑦 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))
6 r19.12 3045 . . . . . . . 8 (∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))
76ralimi 2936 . . . . . . 7 (∀𝑦 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))
85, 7sylbi 206 . . . . . 6 (∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) → ∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))
9 rphalfcl 11734 . . . . . . . . 9 (𝑑 ∈ ℝ+ → (𝑑 / 2) ∈ ℝ+)
10 breq2 4587 . . . . . . . . . . . . . . . 16 (𝑦 = (𝑑 / 2) → (((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦 ↔ ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)))
1110imbi2d 329 . . . . . . . . . . . . . . 15 (𝑦 = (𝑑 / 2) → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))))
1211ralbidv 2969 . . . . . . . . . . . . . 14 (𝑦 = (𝑑 / 2) → (∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) ↔ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))))
1312rexbidv 3034 . . . . . . . . . . . . 13 (𝑦 = (𝑑 / 2) → (∃𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) ↔ ∃𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))))
1413ralbidv 2969 . . . . . . . . . . . 12 (𝑦 = (𝑑 / 2) → (∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) ↔ ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))))
1514rspcva 3280 . . . . . . . . . . 11 (((𝑑 / 2) ∈ ℝ+ ∧ ∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦)) → ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)))
16 heicant.j . . . . . . . . . . . . . . 15 (𝜑 → (MetOpen‘𝐶) ∈ Comp)
1716ad3antrrr 762 . . . . . . . . . . . . . 14 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → (MetOpen‘𝐶) ∈ Comp)
18 heicant.c . . . . . . . . . . . . . . . . . . . . . . . 24 (𝜑𝐶 ∈ (∞Met‘𝑋))
1918ad2antrr 758 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) → 𝐶 ∈ (∞Met‘𝑋))
2019anim1i 590 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) → (𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥𝑋))
21 rphalfcl 11734 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧 ∈ ℝ+ → (𝑧 / 2) ∈ ℝ+)
2221rpxrd 11749 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧 ∈ ℝ+ → (𝑧 / 2) ∈ ℝ*)
23 eqid 2610 . . . . . . . . . . . . . . . . . . . . . . . 24 (MetOpen‘𝐶) = (MetOpen‘𝐶)
2423blopn 22115 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥𝑋 ∧ (𝑧 / 2) ∈ ℝ*) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶))
25243expa 1257 . . . . . . . . . . . . . . . . . . . . . 22 (((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥𝑋) ∧ (𝑧 / 2) ∈ ℝ*) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶))
2620, 22, 25syl2an 493 . . . . . . . . . . . . . . . . . . . . 21 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶))
2726adantr 480 . . . . . . . . . . . . . . . . . . . 20 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) ∧ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶))
2821rpgt0d 11751 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧 ∈ ℝ+ → 0 < (𝑧 / 2))
2922, 28jca 553 . . . . . . . . . . . . . . . . . . . . . 22 (𝑧 ∈ ℝ+ → ((𝑧 / 2) ∈ ℝ* ∧ 0 < (𝑧 / 2)))
30 xblcntr 22026 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥𝑋 ∧ ((𝑧 / 2) ∈ ℝ* ∧ 0 < (𝑧 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)))
31303expa 1257 . . . . . . . . . . . . . . . . . . . . . 22 (((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥𝑋) ∧ ((𝑧 / 2) ∈ ℝ* ∧ 0 < (𝑧 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)))
3220, 29, 31syl2an 493 . . . . . . . . . . . . . . . . . . . . 21 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)))
3332adantr 480 . . . . . . . . . . . . . . . . . . . 20 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) ∧ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)))
34 opelxpi 5072 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑥𝑋 ∧ (𝑧 / 2) ∈ ℝ+) → ⟨𝑥, (𝑧 / 2)⟩ ∈ (𝑋 × ℝ+))
3521, 34sylan2 490 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑥𝑋𝑧 ∈ ℝ+) → ⟨𝑥, (𝑧 / 2)⟩ ∈ (𝑋 × ℝ+))
3635ad4ant23 1289 . . . . . . . . . . . . . . . . . . . . 21 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) ∧ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ⟨𝑥, (𝑧 / 2)⟩ ∈ (𝑋 × ℝ+))
37 rpcn 11717 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑧 ∈ ℝ+𝑧 ∈ ℂ)
38372halvesd 11155 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑧 ∈ ℝ+ → ((𝑧 / 2) + (𝑧 / 2)) = 𝑧)
3938breq2d 4595 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑧 ∈ ℝ+ → ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) ↔ (𝑥𝐶𝑐) < 𝑧))
4039imbi1d 330 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑧 ∈ ℝ+ → (((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑐) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2))))
4140ralbidv 2969 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑧 ∈ ℝ+ → (∀𝑐𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ∀𝑐𝑋 ((𝑥𝐶𝑐) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2))))
42 oveq2 6557 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑐 = 𝑤 → (𝑥𝐶𝑐) = (𝑥𝐶𝑤))
4342breq1d 4593 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑐 = 𝑤 → ((𝑥𝐶𝑐) < 𝑧 ↔ (𝑥𝐶𝑤) < 𝑧))
44 fveq2 6103 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑐 = 𝑤 → (𝑓𝑐) = (𝑓𝑤))
4544oveq2d 6565 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑐 = 𝑤 → ((𝑓𝑥)𝐷(𝑓𝑐)) = ((𝑓𝑥)𝐷(𝑓𝑤)))
4645breq1d 4593 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑐 = 𝑤 → (((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2) ↔ ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)))
4743, 46imbi12d 333 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑐 = 𝑤 → (((𝑥𝐶𝑐) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))))
4847cbvralv 3147 . . . . . . . . . . . . . . . . . . . . . . . 24 (∀𝑐𝑋 ((𝑥𝐶𝑐) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)))
4941, 48syl6bb 275 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑧 ∈ ℝ+ → (∀𝑐𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))))
5049biimpar 501 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑧 ∈ ℝ+ ∧ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ∀𝑐𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)))
5150adantll 746 . . . . . . . . . . . . . . . . . . . . 21 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) ∧ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ∀𝑐𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)))
52 vex 3176 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 𝑥 ∈ V
53 ovex 6577 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑧 / 2) ∈ V
5452, 53op1std 7069 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (1st𝑝) = 𝑥)
5552, 53op2ndd 7070 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (2nd𝑝) = (𝑧 / 2))
5654, 55oveq12d 6567 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → ((1st𝑝)(ball‘𝐶)(2nd𝑝)) = (𝑥(ball‘𝐶)(𝑧 / 2)))
5756eqcomd 2616 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)))
5857biantrurd 528 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
5954oveq1d 6564 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → ((1st𝑝)𝐶𝑐) = (𝑥𝐶𝑐))
6055, 55oveq12d 6567 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → ((2nd𝑝) + (2nd𝑝)) = ((𝑧 / 2) + (𝑧 / 2)))
6159, 60breq12d 4596 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) ↔ (𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2))))
6254fveq2d 6107 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (𝑓‘(1st𝑝)) = (𝑓𝑥))
6362oveq1d 6564 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) = ((𝑓𝑥)𝐷(𝑓𝑐)))
6463breq1d 4593 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2) ↔ ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2)))
6561, 64imbi12d 333 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → ((((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2))))
6665ralbidv 2969 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ∀𝑐𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2))))
6758, 66bitr3d 269 . . . . . . . . . . . . . . . . . . . . . 22 (𝑝 = ⟨𝑥, (𝑧 / 2)⟩ → (((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))) ↔ ∀𝑐𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2))))
6867rspcev 3282 . . . . . . . . . . . . . . . . . . . . 21 ((⟨𝑥, (𝑧 / 2)⟩ ∈ (𝑋 × ℝ+) ∧ ∀𝑐𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑐)) < (𝑑 / 2))) → ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))
6936, 51, 68syl2anc 691 . . . . . . . . . . . . . . . . . . . 20 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) ∧ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))
70 eleq2 2677 . . . . . . . . . . . . . . . . . . . . . 22 (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (𝑥𝑏𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))))
71 eqeq1 2614 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ↔ (𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝))))
7271anbi1d 737 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → ((𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))) ↔ ((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
7372rexbidv 3034 . . . . . . . . . . . . . . . . . . . . . 22 (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))) ↔ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
7470, 73anbi12d 743 . . . . . . . . . . . . . . . . . . . . 21 (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → ((𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ↔ (𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)) ∧ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
7574rspcev 3282 . . . . . . . . . . . . . . . . . . . 20 (((𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶) ∧ (𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)) ∧ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
7627, 33, 69, 75syl12anc 1316 . . . . . . . . . . . . . . . . . . 19 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) ∧ ∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
7776ex 449 . . . . . . . . . . . . . . . . . 18 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) ∧ 𝑧 ∈ ℝ+) → (∀𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
7877rexlimdva 3013 . . . . . . . . . . . . . . . . 17 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥𝑋) → (∃𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
7978ralimdva 2945 . . . . . . . . . . . . . . . 16 (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) → (∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)) → ∀𝑥𝑋𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
8079imp 444 . . . . . . . . . . . . . . 15 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ∀𝑥𝑋𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
8123mopnuni 22056 . . . . . . . . . . . . . . . . . 18 (𝐶 ∈ (∞Met‘𝑋) → 𝑋 = (MetOpen‘𝐶))
8218, 81syl 17 . . . . . . . . . . . . . . . . 17 (𝜑𝑋 = (MetOpen‘𝐶))
8382raleqdv 3121 . . . . . . . . . . . . . . . 16 (𝜑 → (∀𝑥𝑋𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ↔ ∀𝑥 (MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
8483ad3antrrr 762 . . . . . . . . . . . . . . 15 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → (∀𝑥𝑋𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ↔ ∀𝑥 (MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
8580, 84mpbid 221 . . . . . . . . . . . . . 14 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ∀𝑥 (MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
86 eqid 2610 . . . . . . . . . . . . . . 15 (MetOpen‘𝐶) = (MetOpen‘𝐶)
87 fveq2 6103 . . . . . . . . . . . . . . . . . 18 (𝑝 = (𝑔𝑏) → (1st𝑝) = (1st ‘(𝑔𝑏)))
88 fveq2 6103 . . . . . . . . . . . . . . . . . 18 (𝑝 = (𝑔𝑏) → (2nd𝑝) = (2nd ‘(𝑔𝑏)))
8987, 88oveq12d 6567 . . . . . . . . . . . . . . . . 17 (𝑝 = (𝑔𝑏) → ((1st𝑝)(ball‘𝐶)(2nd𝑝)) = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))))
9089eqeq2d 2620 . . . . . . . . . . . . . . . 16 (𝑝 = (𝑔𝑏) → (𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ↔ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))))
9187oveq1d 6564 . . . . . . . . . . . . . . . . . . 19 (𝑝 = (𝑔𝑏) → ((1st𝑝)𝐶𝑐) = ((1st ‘(𝑔𝑏))𝐶𝑐))
9288, 88oveq12d 6567 . . . . . . . . . . . . . . . . . . 19 (𝑝 = (𝑔𝑏) → ((2nd𝑝) + (2nd𝑝)) = ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))
9391, 92breq12d 4596 . . . . . . . . . . . . . . . . . 18 (𝑝 = (𝑔𝑏) → (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) ↔ ((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))))
9487fveq2d 6107 . . . . . . . . . . . . . . . . . . . 20 (𝑝 = (𝑔𝑏) → (𝑓‘(1st𝑝)) = (𝑓‘(1st ‘(𝑔𝑏))))
9594oveq1d 6564 . . . . . . . . . . . . . . . . . . 19 (𝑝 = (𝑔𝑏) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) = ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)))
9695breq1d 4593 . . . . . . . . . . . . . . . . . 18 (𝑝 = (𝑔𝑏) → (((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))
9793, 96imbi12d 333 . . . . . . . . . . . . . . . . 17 (𝑝 = (𝑔𝑏) → ((((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))
9897ralbidv 2969 . . . . . . . . . . . . . . . 16 (𝑝 = (𝑔𝑏) → (∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))
9990, 98anbi12d 743 . . . . . . . . . . . . . . 15 (𝑝 = (𝑔𝑏) → ((𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))) ↔ (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))))
10086, 99cmpcovf 21004 . . . . . . . . . . . . . 14 (((MetOpen‘𝐶) ∈ Comp ∧ ∀𝑥 (MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st𝑝)(ball‘𝐶)(2nd𝑝)) ∧ ∀𝑐𝑋 (((1st𝑝)𝐶𝑐) < ((2nd𝑝) + (2nd𝑝)) → ((𝑓‘(1st𝑝))𝐷(𝑓𝑐)) < (𝑑 / 2))))) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)( (MetOpen‘𝐶) = 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
10117, 85, 100syl2anc 691 . . . . . . . . . . . . 13 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ ∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2))) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)( (MetOpen‘𝐶) = 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))))
102101ex 449 . . . . . . . . . . . 12 (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) → (∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)( (MetOpen‘𝐶) = 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))))))
103 elinel2 3762 . . . . . . . . . . . . . 14 (𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin) → 𝑠 ∈ Fin)
104 simpll 786 . . . . . . . . . . . . . . . . . . . . 21 (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) → 𝜑)
105104anim1i 590 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → (𝜑𝑠 ∈ Fin))
106 frn 5966 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑔:𝑠⟶(𝑋 × ℝ+) → ran 𝑔 ⊆ (𝑋 × ℝ+))
107 rnss 5275 . . . . . . . . . . . . . . . . . . . . . . . 24 (ran 𝑔 ⊆ (𝑋 × ℝ+) → ran ran 𝑔 ⊆ ran (𝑋 × ℝ+))
108106, 107syl 17 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran 𝑔 ⊆ ran (𝑋 × ℝ+))
109 rnxpss 5485 . . . . . . . . . . . . . . . . . . . . . . 23 ran (𝑋 × ℝ+) ⊆ ℝ+
110108, 109syl6ss 3580 . . . . . . . . . . . . . . . . . . . . . 22 (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran 𝑔 ⊆ ℝ+)
111110adantl 481 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran ran 𝑔 ⊆ ℝ+)
112 simplr 788 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝜑𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) → 𝑠 ∈ Fin)
113 ffun 5961 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑔:𝑠⟶(𝑋 × ℝ+) → Fun 𝑔)
114 vex 3176 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 𝑔 ∈ V
115114fundmen 7916 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (Fun 𝑔 → dom 𝑔𝑔)
116115ensymd 7893 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (Fun 𝑔𝑔 ≈ dom 𝑔)
117113, 116syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 ≈ dom 𝑔)
118 fdm 5964 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑔:𝑠⟶(𝑋 × ℝ+) → dom 𝑔 = 𝑠)
119117, 118breqtrd 4609 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔𝑠)
120 enfii 8062 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑠 ∈ Fin ∧ 𝑔𝑠) → 𝑔 ∈ Fin)
121119, 120sylan2 490 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑠 ∈ Fin ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑔 ∈ Fin)
122 rnfi 8132 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑔 ∈ Fin → ran 𝑔 ∈ Fin)
123 rnfi 8132 . . . . . . . . . . . . . . . . . . . . . . . 24 (ran 𝑔 ∈ Fin → ran ran 𝑔 ∈ Fin)
124121, 122, 1233syl 18 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑠 ∈ Fin ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran ran 𝑔 ∈ Fin)
125112, 124sylan 487 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran ran 𝑔 ∈ Fin)
126118adantl 481 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝜑 (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → dom 𝑔 = 𝑠)
127 eqtr 2629 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((𝑋 = (MetOpen‘𝐶) ∧ (MetOpen‘𝐶) = 𝑠) → 𝑋 = 𝑠)
12882, 127sylan 487 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝜑 (MetOpen‘𝐶) = 𝑠) → 𝑋 = 𝑠)
129 heicant.x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝜑𝑋 ≠ ∅)
130129adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝜑 (MetOpen‘𝐶) = 𝑠) → 𝑋 ≠ ∅)
131128, 130eqnetrrd 2850 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝜑 (MetOpen‘𝐶) = 𝑠) → 𝑠 ≠ ∅)
132 unieq 4380 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑠 = ∅ → 𝑠 = ∅)
133 uni0 4401 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ∅ = ∅
134132, 133syl6eq 2660 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑠 = ∅ → 𝑠 = ∅)
135134necon3i 2814 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ( 𝑠 ≠ ∅ → 𝑠 ≠ ∅)
136131, 135syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝜑 (MetOpen‘𝐶) = 𝑠) → 𝑠 ≠ ∅)
137136adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝜑 (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑠 ≠ ∅)
138126, 137eqnetrd 2849 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝜑 (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → dom 𝑔 ≠ ∅)
139 dm0rn0 5263 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (dom 𝑔 = ∅ ↔ ran 𝑔 = ∅)
140139necon3bii 2834 . . . . . . . . . . . . . . . . . . . . . . . . 25 (dom 𝑔 ≠ ∅ ↔ ran 𝑔 ≠ ∅)
141138, 140sylib 207 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝜑 (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran 𝑔 ≠ ∅)
142 relxp 5150 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Rel (𝑋 × ℝ+)
143 relss 5129 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (ran 𝑔 ⊆ (𝑋 × ℝ+) → (Rel (𝑋 × ℝ+) → Rel ran 𝑔))
144106, 142, 143mpisyl 21 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑔:𝑠⟶(𝑋 × ℝ+) → Rel ran 𝑔)
145 relrn0 5304 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (Rel ran 𝑔 → (ran 𝑔 = ∅ ↔ ran ran 𝑔 = ∅))
146145necon3bid 2826 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (Rel ran 𝑔 → (ran 𝑔 ≠ ∅ ↔ ran ran 𝑔 ≠ ∅))
147144, 146syl 17 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑔:𝑠⟶(𝑋 × ℝ+) → (ran 𝑔 ≠ ∅ ↔ ran ran 𝑔 ≠ ∅))
148147adantl 481 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝜑 (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → (ran 𝑔 ≠ ∅ ↔ ran ran 𝑔 ≠ ∅))
149141, 148mpbid 221 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝜑 (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran ran 𝑔 ≠ ∅)
150149adantllr 751 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran ran 𝑔 ≠ ∅)
151 rpssre 11719 . . . . . . . . . . . . . . . . . . . . . . 23 + ⊆ ℝ
152111, 151syl6ss 3580 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran ran 𝑔 ⊆ ℝ)
153 ltso 9997 . . . . . . . . . . . . . . . . . . . . . . 23 < Or ℝ
154 fiinfcl 8290 . . . . . . . . . . . . . . . . . . . . . . 23 (( < Or ℝ ∧ (ran ran 𝑔 ∈ Fin ∧ ran ran 𝑔 ≠ ∅ ∧ ran ran 𝑔 ⊆ ℝ)) → inf(ran ran 𝑔, ℝ, < ) ∈ ran ran 𝑔)
155153, 154mpan 702 . . . . . . . . . . . . . . . . . . . . . 22 ((ran ran 𝑔 ∈ Fin ∧ ran ran 𝑔 ≠ ∅ ∧ ran ran 𝑔 ⊆ ℝ) → inf(ran ran 𝑔, ℝ, < ) ∈ ran ran 𝑔)
156125, 150, 152, 155syl3anc 1318 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → inf(ran ran 𝑔, ℝ, < ) ∈ ran ran 𝑔)
157111, 156sseldd 3569 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → inf(ran ran 𝑔, ℝ, < ) ∈ ℝ+)
158105, 157sylanl1 680 . . . . . . . . . . . . . . . . . . 19 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → inf(ran ran 𝑔, ℝ, < ) ∈ ℝ+)
159158adantr 480 . . . . . . . . . . . . . . . . . 18 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → inf(ran ran 𝑔, ℝ, < ) ∈ ℝ+)
16082ad3antrrr 762 . . . . . . . . . . . . . . . . . . . . . . 23 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → 𝑋 = (MetOpen‘𝐶))
161160anim1i 590 . . . . . . . . . . . . . . . . . . . . . 22 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) → (𝑋 = (MetOpen‘𝐶) ∧ (MetOpen‘𝐶) = 𝑠))
162161ad2antrr 758 . . . . . . . . . . . . . . . . . . . . 21 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → (𝑋 = (MetOpen‘𝐶) ∧ (MetOpen‘𝐶) = 𝑠))
163 simpl 472 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥𝑋𝑤𝑋) → 𝑥𝑋)
164127eleq2d 2673 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑋 = (MetOpen‘𝐶) ∧ (MetOpen‘𝐶) = 𝑠) → (𝑥𝑋𝑥 𝑠))
165 eluni2 4376 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥 𝑠 ↔ ∃𝑏𝑠 𝑥𝑏)
166164, 165syl6bb 275 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑋 = (MetOpen‘𝐶) ∧ (MetOpen‘𝐶) = 𝑠) → (𝑥𝑋 ↔ ∃𝑏𝑠 𝑥𝑏))
167166biimpa 500 . . . . . . . . . . . . . . . . . . . . 21 (((𝑋 = (MetOpen‘𝐶) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑥𝑋) → ∃𝑏𝑠 𝑥𝑏)
168162, 163, 167syl2an 493 . . . . . . . . . . . . . . . . . . . 20 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑥𝑋𝑤𝑋)) → ∃𝑏𝑠 𝑥𝑏)
169 nfv 1830 . . . . . . . . . . . . . . . . . . . . . . 23 𝑏(((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+))
170 nfra1 2925 . . . . . . . . . . . . . . . . . . . . . . 23 𝑏𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))
171169, 170nfan 1816 . . . . . . . . . . . . . . . . . . . . . 22 𝑏((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))
172 nfv 1830 . . . . . . . . . . . . . . . . . . . . . 22 𝑏(𝑥𝑋𝑤𝑋)
173171, 172nfan 1816 . . . . . . . . . . . . . . . . . . . . 21 𝑏(((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑥𝑋𝑤𝑋))
174 nfv 1830 . . . . . . . . . . . . . . . . . . . . 21 𝑏((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)
175 rspa 2914 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))) ∧ 𝑏𝑠) → (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))
176 oveq2 6557 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (𝑐 = 𝑥 → ((1st ‘(𝑔𝑏))𝐶𝑐) = ((1st ‘(𝑔𝑏))𝐶𝑥))
177176breq1d 4593 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (𝑐 = 𝑥 → (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ↔ ((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))))
178 fveq2 6103 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (𝑐 = 𝑥 → (𝑓𝑐) = (𝑓𝑥))
179178oveq2d 6565 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (𝑐 = 𝑥 → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) = ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)))
180179breq1d 4593 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (𝑐 = 𝑥 → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)))
181177, 180imbi12d 333 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑐 = 𝑥 → ((((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2))))
182181rspcva 3280 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((𝑥𝑋 ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))) → (((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)))
183 oveq2 6557 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (𝑐 = 𝑤 → ((1st ‘(𝑔𝑏))𝐶𝑐) = ((1st ‘(𝑔𝑏))𝐶𝑤))
184183breq1d 4593 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (𝑐 = 𝑤 → (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ↔ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))))
18544oveq2d 6565 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (𝑐 = 𝑤 → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) = ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)))
186185breq1d 4593 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (𝑐 = 𝑤 → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)))
187184, 186imbi12d 333 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑐 = 𝑤 → ((((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))))
188187rspcva 3280 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((𝑤𝑋 ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))) → (((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)))
189182, 188anim12i 588 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (((𝑥𝑋 ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))) ∧ (𝑤𝑋 ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → ((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))))
190189anandirs 870 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (((𝑥𝑋𝑤𝑋) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))) → ((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))))
191 prth 593 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))))
192190, 191syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((𝑥𝑋𝑤𝑋) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))) → ((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))))
193192adantrl 748 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((𝑥𝑋𝑤𝑋) ∧ (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → ((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))))
194193ad4ant23 1289 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑏𝑠𝑥𝑏)) → ((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))))
195 simpll 786 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) → ((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+))
196195anim1i 590 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)))
197196anim1i 590 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) → ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)))
198110, 151syl6ss 3580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran 𝑔 ⊆ ℝ)
199198adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → ran ran 𝑔 ⊆ ℝ)
200 0re 9919 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 0 ∈ ℝ
201 rpge0 11721 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 (𝑦 ∈ ℝ+ → 0 ≤ 𝑦)
202201rgen 2906 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 𝑦 ∈ ℝ+ 0 ≤ 𝑦
203 ssralv 3629 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (ran ran 𝑔 ⊆ ℝ+ → (∀𝑦 ∈ ℝ+ 0 ≤ 𝑦 → ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦))
204110, 202, 203mpisyl 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (𝑔:𝑠⟶(𝑋 × ℝ+) → ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦)
205 breq1 4586 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 (𝑥 = 0 → (𝑥𝑦 ↔ 0 ≤ 𝑦))
206205ralbidv 2969 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (𝑥 = 0 → (∀𝑦 ∈ ran ran 𝑔 𝑥𝑦 ↔ ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦))
207206rspcev 3282 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((0 ∈ ℝ ∧ ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥𝑦)
208200, 204, 207sylancr 694 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (𝑔:𝑠⟶(𝑋 × ℝ+) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥𝑦)
209208adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥𝑦)
210144adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → Rel ran 𝑔)
211 ffn 5958 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 Fn 𝑠)
212 fnfvelrn 6264 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((𝑔 Fn 𝑠𝑏𝑠) → (𝑔𝑏) ∈ ran 𝑔)
213211, 212sylan 487 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (𝑔𝑏) ∈ ran 𝑔)
214 2ndrn 7107 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((Rel ran 𝑔 ∧ (𝑔𝑏) ∈ ran 𝑔) → (2nd ‘(𝑔𝑏)) ∈ ran ran 𝑔)
215210, 213, 214syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ran ran 𝑔)
216 infrelb 10885 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((ran ran 𝑔 ⊆ ℝ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥𝑦 ∧ (2nd ‘(𝑔𝑏)) ∈ ran ran 𝑔) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd ‘(𝑔𝑏)))
217199, 209, 215, 216syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd ‘(𝑔𝑏)))
218217adantll 746 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏𝑠) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd ‘(𝑔𝑏)))
219218ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd ‘(𝑔𝑏)))
22018ad3antrrr 762 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝐶 ∈ (∞Met‘𝑋))
221 xmetcl 21946 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥𝑋𝑤𝑋) → (𝑥𝐶𝑤) ∈ ℝ*)
2222213expb 1258 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝐶 ∈ (∞Met‘𝑋) ∧ (𝑥𝑋𝑤𝑋)) → (𝑥𝐶𝑤) ∈ ℝ*)
223220, 222sylan 487 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) → (𝑥𝐶𝑤) ∈ ℝ*)
224223adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → (𝑥𝐶𝑤) ∈ ℝ*)
225 simplr 788 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) → 𝑔:𝑠⟶(𝑋 × ℝ+))
226 simpl 472 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((𝑏𝑠𝑥𝑏) → 𝑏𝑠)
227 ne0i 3880 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((2nd ‘(𝑔𝑏)) ∈ ran ran 𝑔 → ran ran 𝑔 ≠ ∅)
228215, 227syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → ran ran 𝑔 ≠ ∅)
229 infrecl 10882 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((ran ran 𝑔 ⊆ ℝ ∧ ran ran 𝑔 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥𝑦) → inf(ran ran 𝑔, ℝ, < ) ∈ ℝ)
230199, 228, 209, 229syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → inf(ran ran 𝑔, ℝ, < ) ∈ ℝ)
231230rexrd 9968 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → inf(ran ran 𝑔, ℝ, < ) ∈ ℝ*)
232225, 226, 231syl2an 493 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → inf(ran ran 𝑔, ℝ, < ) ∈ ℝ*)
233 simpr 476 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑔:𝑠⟶(𝑋 × ℝ+))
234233ffvelrnda 6267 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏𝑠) → (𝑔𝑏) ∈ (𝑋 × ℝ+))
235 xp2nd 7090 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑔𝑏) ∈ (𝑋 × ℝ+) → (2nd ‘(𝑔𝑏)) ∈ ℝ+)
236234, 235syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ+)
237236rpxrd 11749 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ*)
238237ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → (2nd ‘(𝑔𝑏)) ∈ ℝ*)
239 xrltletr 11864 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (((𝑥𝐶𝑤) ∈ ℝ* ∧ inf(ran ran 𝑔, ℝ, < ) ∈ ℝ* ∧ (2nd ‘(𝑔𝑏)) ∈ ℝ*) → (((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) ∧ inf(ran ran 𝑔, ℝ, < ) ≤ (2nd ‘(𝑔𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))))
240224, 232, 238, 239syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → (((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) ∧ inf(ran ran 𝑔, ℝ, < ) ≤ (2nd ‘(𝑔𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))))
241219, 240mpan2d 706 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))))
242241adantlr 747 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))))
24318ad6antr 768 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → 𝐶 ∈ (∞Met‘𝑋))
244 simpllr 795 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) → 𝑔:𝑠⟶(𝑋 × ℝ+))
245 ffvelrn 6265 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (𝑔𝑏) ∈ (𝑋 × ℝ+))
246 xp1st 7089 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((𝑔𝑏) ∈ (𝑋 × ℝ+) → (1st ‘(𝑔𝑏)) ∈ 𝑋)
247245, 246syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (1st ‘(𝑔𝑏)) ∈ 𝑋)
248244, 226, 247syl2an 493 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (1st ‘(𝑔𝑏)) ∈ 𝑋)
249 simpr 476 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑥𝑋𝑤𝑋) → 𝑤𝑋)
250249ad3antlr 763 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → 𝑤𝑋)
251 xmetcl 21946 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st ‘(𝑔𝑏)) ∈ 𝑋𝑤𝑋) → ((1st ‘(𝑔𝑏))𝐶𝑤) ∈ ℝ*)
252243, 248, 250, 251syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑤) ∈ ℝ*)
253252adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑤) ∈ ℝ*)
254245, 235syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ+)
255225, 254sylan 487 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ+)
256255ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (2nd ‘(𝑔𝑏)) ∈ ℝ+)
257256rpred 11748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (2nd ‘(𝑔𝑏)) ∈ ℝ)
258 eleq2 2677 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) → (𝑥𝑏𝑥 ∈ ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))))
25918ad5antr 766 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → 𝐶 ∈ (∞Met‘𝑋))
260225, 247sylan 487 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (1st ‘(𝑔𝑏)) ∈ 𝑋)
261255rpxrd 11749 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ*)
262 elbl 22003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st ‘(𝑔𝑏)) ∈ 𝑋 ∧ (2nd ‘(𝑔𝑏)) ∈ ℝ*) → (𝑥 ∈ ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ↔ (𝑥𝑋 ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)))))
263259, 260, 261, 262syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (𝑥 ∈ ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ↔ (𝑥𝑋 ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)))))
264258, 263sylan9bbr 733 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) → (𝑥𝑏 ↔ (𝑥𝑋 ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)))))
265264biimpd 218 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) → (𝑥𝑏 → (𝑥𝑋 ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)))))
266265an32s 842 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ 𝑏𝑠) → (𝑥𝑏 → (𝑥𝑋 ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)))))
267266impr 647 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (𝑥𝑋 ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏))))
268267simprd 478 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)))
269163ad3antlr 763 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → 𝑥𝑋)
270 xmetcl 21946 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st ‘(𝑔𝑏)) ∈ 𝑋𝑥𝑋) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ*)
271243, 248, 269, 270syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ*)
272254rpxrd 11749 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ*)
273244, 226, 272syl2an 493 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (2nd ‘(𝑔𝑏)) ∈ ℝ*)
274 xrltle 11858 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ* ∧ (2nd ‘(𝑔𝑏)) ∈ ℝ*) → (((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏))))
275271, 273, 274syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏))))
276268, 275mpd 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏)))
277225ffvelrnda 6267 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (𝑔𝑏) ∈ (𝑋 × ℝ+))
278277, 246syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (1st ‘(𝑔𝑏)) ∈ 𝑋)
279 simplrl 796 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → 𝑥𝑋)
280259, 278, 279, 270syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ*)
281 xmetge0 21959 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st ‘(𝑔𝑏)) ∈ 𝑋𝑥𝑋) → 0 ≤ ((1st ‘(𝑔𝑏))𝐶𝑥))
282259, 278, 279, 281syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → 0 ≤ ((1st ‘(𝑔𝑏))𝐶𝑥))
283 xrrege0 11879 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 (((((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ* ∧ (2nd ‘(𝑔𝑏)) ∈ ℝ) ∧ (0 ≤ ((1st ‘(𝑔𝑏))𝐶𝑥) ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏)))) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ)
284283an4s 865 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ* ∧ 0 ≤ ((1st ‘(𝑔𝑏))𝐶𝑥)) ∧ ((2nd ‘(𝑔𝑏)) ∈ ℝ ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏)))) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ)
285284ex 449 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ* ∧ 0 ≤ ((1st ‘(𝑔𝑏))𝐶𝑥)) → (((2nd ‘(𝑔𝑏)) ∈ ℝ ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ))
286280, 282, 285syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (((2nd ‘(𝑔𝑏)) ∈ ℝ ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ))
287286ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (((2nd ‘(𝑔𝑏)) ∈ ℝ ∧ ((1st ‘(𝑔𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ))
288257, 276, 287mp2and 711 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ)
289288adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ)
290 xrltle 11858 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 (((𝑥𝐶𝑤) ∈ ℝ* ∧ (2nd ‘(𝑔𝑏)) ∈ ℝ*) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏)) → (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔𝑏))))
291224, 238, 290syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏)) → (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔𝑏))))
292 xmetge0 21959 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥𝑋𝑤𝑋) → 0 ≤ (𝑥𝐶𝑤))
2932923expb 1258 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ((𝐶 ∈ (∞Met‘𝑋) ∧ (𝑥𝑋𝑤𝑋)) → 0 ≤ (𝑥𝐶𝑤))
294220, 293sylan 487 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) → 0 ≤ (𝑥𝐶𝑤))
295294adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → 0 ≤ (𝑥𝐶𝑤))
296236rpred 11748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ)
297296ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → (2nd ‘(𝑔𝑏)) ∈ ℝ)
298 xrrege0 11879 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 ((((𝑥𝐶𝑤) ∈ ℝ* ∧ (2nd ‘(𝑔𝑏)) ∈ ℝ) ∧ (0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔𝑏)))) → (𝑥𝐶𝑤) ∈ ℝ)
299298ex 449 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((𝑥𝐶𝑤) ∈ ℝ* ∧ (2nd ‘(𝑔𝑏)) ∈ ℝ) → ((0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔𝑏))) → (𝑥𝐶𝑤) ∈ ℝ))
300224, 297, 299syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → ((0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔𝑏))) → (𝑥𝐶𝑤) ∈ ℝ))
301295, 300mpand 707 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) ≤ (2nd ‘(𝑔𝑏)) → (𝑥𝐶𝑤) ∈ ℝ))
302291, 301syld 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏)) → (𝑥𝐶𝑤) ∈ ℝ))
303302adantlr 747 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏)) → (𝑥𝐶𝑤) ∈ ℝ))
304303imp 444 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → (𝑥𝐶𝑤) ∈ ℝ)
305289, 304readdcld 9948 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → (((1st ‘(𝑔𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) ∈ ℝ)
306305rexrd 9968 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → (((1st ‘(𝑔𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) ∈ ℝ*)
307256, 256rpaddcld 11763 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∈ ℝ+)
308307rpxrd 11749 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∈ ℝ*)
309308adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∈ ℝ*)
310 xmettri 21966 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝐶 ∈ (∞Met‘𝑋) ∧ ((1st ‘(𝑔𝑏)) ∈ 𝑋𝑤𝑋𝑥𝑋)) → ((1st ‘(𝑔𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)))
311243, 248, 250, 269, 310syl13anc 1320 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)))
312311adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)))
313 rexadd 11937 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((((1st ‘(𝑔𝑏))𝐶𝑥) ∈ ℝ ∧ (𝑥𝐶𝑤) ∈ ℝ) → (((1st ‘(𝑔𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)) = (((1st ‘(𝑔𝑏))𝐶𝑥) + (𝑥𝐶𝑤)))
314289, 304, 313syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → (((1st ‘(𝑔𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)) = (((1st ‘(𝑔𝑏))𝐶𝑥) + (𝑥𝐶𝑤)))
315312, 314breqtrd 4609 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔𝑏))𝐶𝑥) + (𝑥𝐶𝑤)))
316257adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → (2nd ‘(𝑔𝑏)) ∈ ℝ)
317268adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑥) < (2nd ‘(𝑔𝑏)))
318 simpr 476 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏)))
319289, 304, 316, 316, 317, 318lt2addd 10529 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → (((1st ‘(𝑔𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))
320253, 306, 309, 315, 319xrlelttrd 11867 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏))) → ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))
321320ex 449 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))))
322254rpred 11748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) ∈ ℝ)
323322, 254ltaddrpd 11781 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏𝑠) → (2nd ‘(𝑔𝑏)) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))
324244, 226, 323syl2an 493 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (2nd ‘(𝑔𝑏)) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))
325271, 273, 308, 268, 324xrlttrd 11866 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))
326321, 325jctild 564 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔𝑏)) → (((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))))
327242, 326syld 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))))))
328 simpll 786 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → (𝜑𝑓:𝑋𝑌))
329 heicant.d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (𝜑𝐷 ∈ (∞Met‘𝑌))
330 ffvelrn 6265 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑓:𝑋𝑌𝑥𝑋) → (𝑓𝑥) ∈ 𝑌)
331 ffvelrn 6265 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝑓:𝑋𝑌𝑤𝑋) → (𝑓𝑤) ∈ 𝑌)
332330, 331anim12dan 878 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝑓:𝑋𝑌 ∧ (𝑥𝑋𝑤𝑋)) → ((𝑓𝑥) ∈ 𝑌 ∧ (𝑓𝑤) ∈ 𝑌))
333 xmetcl 21946 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓𝑥) ∈ 𝑌 ∧ (𝑓𝑤) ∈ 𝑌) → ((𝑓𝑥)𝐷(𝑓𝑤)) ∈ ℝ*)
3343333expb 1258 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝐷 ∈ (∞Met‘𝑌) ∧ ((𝑓𝑥) ∈ 𝑌 ∧ (𝑓𝑤) ∈ 𝑌)) → ((𝑓𝑥)𝐷(𝑓𝑤)) ∈ ℝ*)
335329, 332, 334syl2an 493 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((𝜑 ∧ (𝑓:𝑋𝑌 ∧ (𝑥𝑋𝑤𝑋))) → ((𝑓𝑥)𝐷(𝑓𝑤)) ∈ ℝ*)
336335anassrs 678 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (((𝜑𝑓:𝑋𝑌) ∧ (𝑥𝑋𝑤𝑋)) → ((𝑓𝑥)𝐷(𝑓𝑤)) ∈ ℝ*)
337328, 336sylan 487 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) → ((𝑓𝑥)𝐷(𝑓𝑤)) ∈ ℝ*)
338337ad3antrrr 762 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑓𝑥)𝐷(𝑓𝑤)) ∈ ℝ*)
339329ad5antr 766 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → 𝐷 ∈ (∞Met‘𝑌))
340 simp-5r 805 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → 𝑓:𝑋𝑌)
341340, 278ffvelrnd 6268 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (𝑓‘(1st ‘(𝑔𝑏))) ∈ 𝑌)
342 simpllr 795 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑓:𝑋𝑌)
343342ffvelrnda 6267 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑥𝑋) → (𝑓𝑥) ∈ 𝑌)
344343adantrr 749 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) → (𝑓𝑥) ∈ 𝑌)
345344adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (𝑓𝑥) ∈ 𝑌)
346 xmetcl 21946 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔𝑏))) ∈ 𝑌 ∧ (𝑓𝑥) ∈ 𝑌) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ*)
347339, 341, 345, 346syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ*)
3489rpxrd 11749 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 (𝑑 ∈ ℝ+ → (𝑑 / 2) ∈ ℝ*)
349348ad4antlr 765 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (𝑑 / 2) ∈ ℝ*)
350 xrltle 11858 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ*) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ≤ (𝑑 / 2)))
351347, 349, 350syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ≤ (𝑑 / 2)))
352 xmetge0 21959 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔𝑏))) ∈ 𝑌 ∧ (𝑓𝑥) ∈ 𝑌) → 0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)))
353339, 341, 345, 352syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → 0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)))
3549rpred 11748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (𝑑 ∈ ℝ+ → (𝑑 / 2) ∈ ℝ)
355354ad4antlr 765 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (𝑑 / 2) ∈ ℝ)
356 xrrege0 11879 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) ∧ (0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ≤ (𝑑 / 2))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ)
357356ex 449 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) → ((0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ))
358347, 355, 357syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ))
359353, 358mpand 707 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ≤ (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ))
360351, 359syld 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ))
361360ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ))
362361imp 444 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ)
363342ffvelrnda 6267 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑤𝑋) → (𝑓𝑤) ∈ 𝑌)
364363adantrl 748 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) → (𝑓𝑤) ∈ 𝑌)
365364adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (𝑓𝑤) ∈ 𝑌)
366 xmetcl 21946 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔𝑏))) ∈ 𝑌 ∧ (𝑓𝑤) ∈ 𝑌) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ*)
367339, 341, 365, 366syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ*)
368 xrltle 11858 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ*) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ≤ (𝑑 / 2)))
369367, 349, 368syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ≤ (𝑑 / 2)))
370 xmetge0 21959 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔𝑏))) ∈ 𝑌 ∧ (𝑓𝑤) ∈ 𝑌) → 0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)))
371339, 341, 365, 370syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → 0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)))
372 xrrege0 11879 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 (((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) ∧ (0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ≤ (𝑑 / 2))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ)
373372ex 449 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) → ((0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ))
374367, 355, 373syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((0 ≤ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ))
375371, 374mpand 707 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ≤ (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ))
376369, 375syld 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ))
377376ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ))
378377imp 444 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ)
379 readdcl 9898 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) ∈ ℝ)
380362, 378, 379syl2an 493 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)) ∧ (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) ∈ ℝ)
381380anandis 869 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) ∈ ℝ)
382381rexrd 9968 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) ∈ ℝ*)
383 rpxr 11716 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 (𝑑 ∈ ℝ+𝑑 ∈ ℝ*)
384383ad6antlr 769 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → 𝑑 ∈ ℝ*)
385 xmettri 21966 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((𝐷 ∈ (∞Met‘𝑌) ∧ ((𝑓𝑥) ∈ 𝑌 ∧ (𝑓𝑤) ∈ 𝑌 ∧ (𝑓‘(1st ‘(𝑔𝑏))) ∈ 𝑌)) → ((𝑓𝑥)𝐷(𝑓𝑤)) ≤ (((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
386339, 345, 365, 341, 385syl13anc 1320 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((𝑓𝑥)𝐷(𝑓𝑤)) ≤ (((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
387386ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑓𝑥)𝐷(𝑓𝑤)) ≤ (((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
388387adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑓𝑥)𝐷(𝑓𝑤)) ≤ (((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
389 xmetsym 21962 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓𝑥) ∈ 𝑌 ∧ (𝑓‘(1st ‘(𝑔𝑏))) ∈ 𝑌) → ((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) = ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)))
390339, 345, 341, 389syl3anc 1318 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) = ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)))
391390ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) = ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)))
392391adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) = ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)))
393392oveq1d 6564 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) = (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
394 rexadd 11937 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) = (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
395362, 378, 394syl2an 493 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2)) ∧ (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) = (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
396395anandis 869 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) = (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
397393, 396eqtrd 2644 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓𝑥)𝐷(𝑓‘(1st ‘(𝑔𝑏)))) +𝑒 ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) = (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
398388, 397breqtrd 4609 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑓𝑥)𝐷(𝑓𝑤)) ≤ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))))
399 lt2add 10392 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 (((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ) ∧ ((𝑑 / 2) ∈ ℝ ∧ (𝑑 / 2) ∈ ℝ)) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))
400399expcom 450 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 (((𝑑 / 2) ∈ ℝ ∧ (𝑑 / 2) ∈ ℝ) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))))
401355, 355, 400syl2anc 691 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) ∈ ℝ) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))))
402360, 376, 401syl2and 499 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))))
403402pm2.43d 51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏𝑠) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))
404403ad2ant2r 779 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))
405404imp 444 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))
406 rpcn 11717 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 (𝑑 ∈ ℝ+𝑑 ∈ ℂ)
4074062halvesd 11155 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 (𝑑 ∈ ℝ+ → ((𝑑 / 2) + (𝑑 / 2)) = 𝑑)
408407ad6antlr 769 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑑 / 2) + (𝑑 / 2)) = 𝑑)
409405, 408breqtrd 4609 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) + ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤))) < 𝑑)
410338, 382, 384, 398, 409xrlelttrd 11867 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) ∧ (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)
411410ex 449 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → ((((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2)) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))
412327, 411imim12d 79 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
413197, 412sylanl1 680 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ 𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏)))) ∧ (𝑏𝑠𝑥𝑏)) → (((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
414413adantlrr 753 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑏𝑠𝑥𝑏)) → (((((1st ‘(𝑔𝑏))𝐶𝑥) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) ∧ ((1st ‘(𝑔𝑏))𝐶𝑤) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏)))) → (((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
415194, 414mpd 15 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑏𝑠𝑥𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))
416415exp32 629 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → (𝑏𝑠 → (𝑥𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))))
417175, 416sylan2 490 . . . . . . . . . . . . . . . . . . . . . . . 24 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ (∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))) ∧ 𝑏𝑠)) → (𝑏𝑠 → (𝑥𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))))
418417expr 641 . . . . . . . . . . . . . . . . . . . . . . 23 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → (𝑏𝑠 → (𝑏𝑠 → (𝑥𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))))
419418pm2.43d 51 . . . . . . . . . . . . . . . . . . . . . 22 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥𝑋𝑤𝑋)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → (𝑏𝑠 → (𝑥𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))))
420419an32s 842 . . . . . . . . . . . . . . . . . . . . 21 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑥𝑋𝑤𝑋)) → (𝑏𝑠 → (𝑥𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))))
421173, 174, 420rexlimd 3008 . . . . . . . . . . . . . . . . . . . 20 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑥𝑋𝑤𝑋)) → (∃𝑏𝑠 𝑥𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
422168, 421mpd 15 . . . . . . . . . . . . . . . . . . 19 ((((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) ∧ (𝑥𝑋𝑤𝑋)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))
423422ralrimivva 2954 . . . . . . . . . . . . . . . . . 18 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → ∀𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))
424 breq2 4587 . . . . . . . . . . . . . . . . . . . . 21 (𝑧 = inf(ran ran 𝑔, ℝ, < ) → ((𝑥𝐶𝑤) < 𝑧 ↔ (𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < )))
425424imbi1d 330 . . . . . . . . . . . . . . . . . . . 20 (𝑧 = inf(ran ran 𝑔, ℝ, < ) → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
4264252ralbidv 2972 . . . . . . . . . . . . . . . . . . 19 (𝑧 = inf(ran ran 𝑔, ℝ, < ) → (∀𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ∀𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
427426rspcev 3282 . . . . . . . . . . . . . . . . . 18 ((inf(ran ran 𝑔, ℝ, < ) ∈ ℝ+ ∧ ∀𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))
428159, 423, 427syl2anc 691 . . . . . . . . . . . . . . . . 17 (((((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))
429428expl 646 . . . . . . . . . . . . . . . 16 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) → ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
430429exlimdv 1848 . . . . . . . . . . . . . . 15 (((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ (MetOpen‘𝐶) = 𝑠) → (∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
431430expimpd 627 . . . . . . . . . . . . . 14 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → (( (MetOpen‘𝐶) = 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
432103, 431sylan2 490 . . . . . . . . . . . . 13 ((((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)) → (( (MetOpen‘𝐶) = 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
433432rexlimdva 3013 . . . . . . . . . . . 12 (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) → (∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)( (MetOpen‘𝐶) = 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧ ∀𝑏𝑠 (𝑏 = ((1st ‘(𝑔𝑏))(ball‘𝐶)(2nd ‘(𝑔𝑏))) ∧ ∀𝑐𝑋 (((1st ‘(𝑔𝑏))𝐶𝑐) < ((2nd ‘(𝑔𝑏)) + (2nd ‘(𝑔𝑏))) → ((𝑓‘(1st ‘(𝑔𝑏)))𝐷(𝑓𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
434102, 433syld 46 . . . . . . . . . . 11 (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) → (∀𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < (𝑑 / 2)) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
43515, 434syl5 33 . . . . . . . . . 10 (((𝜑𝑓:𝑋𝑌) ∧ 𝑑 ∈ ℝ+) → (((𝑑 / 2) ∈ ℝ+ ∧ ∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦)) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
436435exp4b 630 . . . . . . . . 9 ((𝜑𝑓:𝑋𝑌) → (𝑑 ∈ ℝ+ → ((𝑑 / 2) ∈ ℝ+ → (∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))))
4379, 436mpdi 44 . . . . . . . 8 ((𝜑𝑓:𝑋𝑌) → (𝑑 ∈ ℝ+ → (∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))))
438437ralrimiv 2948 . . . . . . 7 ((𝜑𝑓:𝑋𝑌) → ∀𝑑 ∈ ℝ+ (∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
439 r19.21v 2943 . . . . . . 7 (∀𝑑 ∈ ℝ+ (∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)) ↔ (∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
440438, 439sylib 207 . . . . . 6 ((𝜑𝑓:𝑋𝑌) → (∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) → ∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)))
4418, 440impbid2 215 . . . . 5 ((𝜑𝑓:𝑋𝑌) → (∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦)))
442 ralcom 3079 . . . . 5 (∀𝑦 ∈ ℝ+𝑥𝑋𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦) ↔ ∀𝑥𝑋𝑦 ∈ ℝ+𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))
443441, 442syl6bb 275 . . . 4 ((𝜑𝑓:𝑋𝑌) → (∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑) ↔ ∀𝑥𝑋𝑦 ∈ ℝ+𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦)))
444443pm5.32da 671 . . 3 (𝜑 → ((𝑓:𝑋𝑌 ∧ ∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑)) ↔ (𝑓:𝑋𝑌 ∧ ∀𝑥𝑋𝑦 ∈ ℝ+𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))))
445 eqid 2610 . . . 4 (metUnif‘𝐶) = (metUnif‘𝐶)
446 eqid 2610 . . . 4 (metUnif‘𝐷) = (metUnif‘𝐷)
447 heicant.y . . . 4 (𝜑𝑌 ≠ ∅)
448 xmetpsmet 21963 . . . . 5 (𝐶 ∈ (∞Met‘𝑋) → 𝐶 ∈ (PsMet‘𝑋))
44918, 448syl 17 . . . 4 (𝜑𝐶 ∈ (PsMet‘𝑋))
450 xmetpsmet 21963 . . . . 5 (𝐷 ∈ (∞Met‘𝑌) → 𝐷 ∈ (PsMet‘𝑌))
451329, 450syl 17 . . . 4 (𝜑𝐷 ∈ (PsMet‘𝑌))
452445, 446, 129, 447, 449, 451metucn 22186 . . 3 (𝜑 → (𝑓 ∈ ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) ↔ (𝑓:𝑋𝑌 ∧ ∀𝑑 ∈ ℝ+𝑧 ∈ ℝ+𝑥𝑋𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑑))))
453 eqid 2610 . . . . 5 (MetOpen‘𝐷) = (MetOpen‘𝐷)
45423, 453metcn 22158 . . . 4 ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝐷 ∈ (∞Met‘𝑌)) → (𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)) ↔ (𝑓:𝑋𝑌 ∧ ∀𝑥𝑋𝑦 ∈ ℝ+𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))))
45518, 329, 454syl2anc 691 . . 3 (𝜑 → (𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)) ↔ (𝑓:𝑋𝑌 ∧ ∀𝑥𝑋𝑦 ∈ ℝ+𝑧 ∈ ℝ+𝑤𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓𝑥)𝐷(𝑓𝑤)) < 𝑦))))
456444, 452, 4553bitr4d 299 . 2 (𝜑 → (𝑓 ∈ ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) ↔ 𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷))))
457456eqrdv 2608 1 (𝜑 → ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) = ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   ∧ w3a 1031   = wceq 1475  ∃wex 1695   ∈ wcel 1977   ≠ wne 2780  ∀wral 2896  ∃wrex 2897   ∩ cin 3539   ⊆ wss 3540  ∅c0 3874  𝒫 cpw 4108  ⟨cop 4131  ∪ cuni 4372   class class class wbr 4583   Or wor 4958   × cxp 5036  dom cdm 5038  ran crn 5039  Rel wrel 5043  Fun wfun 5798   Fn wfn 5799  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  1st c1st 7057  2nd c2nd 7058   ≈ cen 7838  Fincfn 7841  infcinf 8230  ℝcr 9814  0cc0 9815   + caddc 9818  ℝ*cxr 9952   < clt 9953   ≤ cle 9954   / cdiv 10563  2c2 10947  ℝ+crp 11708   +𝑒 cxad 11820  PsMetcpsmet 19551  ∞Metcxmt 19552  ballcbl 19554  MetOpencmopn 19557  metUnifcmetu 19558   Cn ccn 20838  Compccmp 20999   Cnucucn 21889 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-er 7629  df-map 7746  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-sup 8231  df-inf 8232  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-n0 11170  df-z 11255  df-uz 11564  df-q 11665  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-ico 12052  df-topgen 15927  df-psmet 19559  df-xmet 19560  df-bl 19562  df-mopn 19563  df-fbas 19564  df-fg 19565  df-metu 19566  df-top 20521  df-bases 20522  df-topon 20523  df-cn 20841  df-cnp 20842  df-cmp 21000  df-fil 21460  df-ust 21814  df-ucn 21890 This theorem is referenced by: (None)
 Copyright terms: Public domain W3C validator