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Theorem sge0resplit 42678
Description: Σ^ splits into two parts, when it's a real number. This is a special case of sge0split 42681. (Contributed by Glauco Siliprandi, 17-Aug-2020.)
Hypotheses
Ref Expression
sge0resplit.a (𝜑𝐴𝑉)
sge0resplit.b (𝜑𝐵𝑊)
sge0resplit.u 𝑈 = (𝐴𝐵)
sge0resplit.in0 (𝜑 → (𝐴𝐵) = ∅)
sge0resplit.f (𝜑𝐹:𝑈⟶(0[,]+∞))
sge0resplit.re (𝜑 → (Σ^𝐹) ∈ ℝ)
Assertion
Ref Expression
sge0resplit (𝜑 → (Σ^𝐹) = ((Σ^‘(𝐹𝐴)) + (Σ^‘(𝐹𝐵))))

Proof of Theorem sge0resplit
Dummy variables 𝑎 𝑏 𝑟 𝑢 𝑣 𝑥 𝑦 𝑡 𝑤 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 sge0resplit.a . . . . . . 7 (𝜑𝐴𝑉)
2 sge0resplit.f . . . . . . . 8 (𝜑𝐹:𝑈⟶(0[,]+∞))
3 ssun1 4146 . . . . . . . . . 10 𝐴 ⊆ (𝐴𝐵)
4 sge0resplit.u . . . . . . . . . . 11 𝑈 = (𝐴𝐵)
54eqcomi 2828 . . . . . . . . . 10 (𝐴𝐵) = 𝑈
63, 5sseqtri 4001 . . . . . . . . 9 𝐴𝑈
76a1i 11 . . . . . . . 8 (𝜑𝐴𝑈)
82, 7fssresd 6538 . . . . . . 7 (𝜑 → (𝐹𝐴):𝐴⟶(0[,]+∞))
94a1i 11 . . . . . . . . 9 (𝜑𝑈 = (𝐴𝐵))
10 sge0resplit.b . . . . . . . . . 10 (𝜑𝐵𝑊)
11 unexg 7464 . . . . . . . . . 10 ((𝐴𝑉𝐵𝑊) → (𝐴𝐵) ∈ V)
121, 10, 11syl2anc 586 . . . . . . . . 9 (𝜑 → (𝐴𝐵) ∈ V)
139, 12eqeltrd 2911 . . . . . . . 8 (𝜑𝑈 ∈ V)
14 sge0resplit.re . . . . . . . 8 (𝜑 → (Σ^𝐹) ∈ ℝ)
1513, 2, 14sge0ssre 42669 . . . . . . 7 (𝜑 → (Σ^‘(𝐹𝐴)) ∈ ℝ)
161, 8, 15sge0supre 42661 . . . . . 6 (𝜑 → (Σ^‘(𝐹𝐴)) = sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ))
1716, 15eqeltrrd 2912 . . . . 5 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) ∈ ℝ)
18 ssun2 4147 . . . . . . . . . 10 𝐵 ⊆ (𝐴𝐵)
1918, 5sseqtri 4001 . . . . . . . . 9 𝐵𝑈
2019a1i 11 . . . . . . . 8 (𝜑𝐵𝑈)
212, 20fssresd 6538 . . . . . . 7 (𝜑 → (𝐹𝐵):𝐵⟶(0[,]+∞))
2213, 2, 14sge0ssre 42669 . . . . . . 7 (𝜑 → (Σ^‘(𝐹𝐵)) ∈ ℝ)
2310, 21, 22sge0supre 42661 . . . . . 6 (𝜑 → (Σ^‘(𝐹𝐵)) = sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < ))
2423, 22eqeltrrd 2912 . . . . 5 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < ) ∈ ℝ)
25 rexadd 12617 . . . . 5 ((sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) ∈ ℝ ∧ sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < ) ∈ ℝ) → (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) +𝑒 sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < )) = (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) + sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < )))
2617, 24, 25syl2anc 586 . . . 4 (𝜑 → (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) +𝑒 sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < )) = (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) + sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < )))
2713, 2, 14sge0rern 42660 . . . . . . . 8 (𝜑 → ¬ +∞ ∈ ran 𝐹)
28 nelrnres 41437 . . . . . . . 8 (¬ +∞ ∈ ran 𝐹 → ¬ +∞ ∈ ran (𝐹𝐴))
2927, 28syl 17 . . . . . . 7 (𝜑 → ¬ +∞ ∈ ran (𝐹𝐴))
308, 29fge0iccico 42642 . . . . . 6 (𝜑 → (𝐹𝐴):𝐴⟶(0[,)+∞))
3130sge0rnre 42636 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ⊆ ℝ)
32 sge0rnn0 42640 . . . . . 6 ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ≠ ∅
3332a1i 11 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ≠ ∅)
341, 30sge0reval 42644 . . . . . . . 8 (𝜑 → (Σ^‘(𝐹𝐴)) = sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ))
3534eqcomd 2825 . . . . . . 7 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ) = (Σ^‘(𝐹𝐴)))
3635, 15eqeltrd 2911 . . . . . 6 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ) ∈ ℝ)
37 supxrre3 41582 . . . . . . 7 ((ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ⊆ ℝ ∧ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ≠ ∅) → (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ) ∈ ℝ ↔ ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))𝑡𝑤))
3831, 33, 37syl2anc 586 . . . . . 6 (𝜑 → (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ) ∈ ℝ ↔ ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))𝑡𝑤))
3936, 38mpbid 234 . . . . 5 (𝜑 → ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))𝑡𝑤)
40 nelrnres 41437 . . . . . . . 8 (¬ +∞ ∈ ran 𝐹 → ¬ +∞ ∈ ran (𝐹𝐵))
4127, 40syl 17 . . . . . . 7 (𝜑 → ¬ +∞ ∈ ran (𝐹𝐵))
4221, 41fge0iccico 42642 . . . . . 6 (𝜑 → (𝐹𝐵):𝐵⟶(0[,)+∞))
4342sge0rnre 42636 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ⊆ ℝ)
44 sge0rnn0 42640 . . . . . 6 ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ≠ ∅
4544a1i 11 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ≠ ∅)
4610, 42sge0reval 42644 . . . . . . . 8 (𝜑 → (Σ^‘(𝐹𝐵)) = sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ))
4746eqcomd 2825 . . . . . . 7 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ) = (Σ^‘(𝐹𝐵)))
4847, 22eqeltrd 2911 . . . . . 6 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ) ∈ ℝ)
49 supxrre3 41582 . . . . . . 7 ((ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ⊆ ℝ ∧ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ≠ ∅) → (sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ) ∈ ℝ ↔ ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑡𝑤))
5043, 45, 49syl2anc 586 . . . . . 6 (𝜑 → (sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ) ∈ ℝ ↔ ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑡𝑤))
5148, 50mpbid 234 . . . . 5 (𝜑 → ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑡𝑤)
52 eqid 2819 . . . . 5 {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} = {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)}
5331, 33, 39, 43, 45, 51, 52supadd 11601 . . . 4 (𝜑 → (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) + sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < )) = sup({𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)}, ℝ, < ))
54 simpl 485 . . . . . . . . . 10 ((𝜑𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)}) → 𝜑)
55 vex 3496 . . . . . . . . . . . . 13 𝑟 ∈ V
56 eqeq1 2823 . . . . . . . . . . . . . . 15 (𝑧 = 𝑟 → (𝑧 = (𝑣 + 𝑢) ↔ 𝑟 = (𝑣 + 𝑢)))
5756rexbidv 3295 . . . . . . . . . . . . . 14 (𝑧 = 𝑟 → (∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢) ↔ ∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)))
5857rexbidv 3295 . . . . . . . . . . . . 13 (𝑧 = 𝑟 → (∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢) ↔ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)))
5955, 58elab 3665 . . . . . . . . . . . 12 (𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} ↔ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))
6059biimpi 218 . . . . . . . . . . 11 (𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))
6160adantl 484 . . . . . . . . . 10 ((𝜑𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)}) → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))
62 simpl 485 . . . . . . . . . . . . . 14 ((𝜑 ∧ (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)))) → 𝜑)
63 vex 3496 . . . . . . . . . . . . . . . . . . . 20 𝑣 ∈ V
64 sumeq1 15037 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 = 𝑎 → Σ𝑦𝑥 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
6564cbvmptv 5160 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) = (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
6665elrnmpt 5821 . . . . . . . . . . . . . . . . . . . 20 (𝑣 ∈ V → (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ↔ ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦)))
6763, 66ax-mp 5 . . . . . . . . . . . . . . . . . . 19 (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ↔ ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
6867biimpi 218 . . . . . . . . . . . . . . . . . 18 (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) → ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
6968adantr 483 . . . . . . . . . . . . . . . . 17 ((𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))) → ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
70 vex 3496 . . . . . . . . . . . . . . . . . . . 20 𝑢 ∈ V
71 sumeq1 15037 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 = 𝑏 → Σ𝑦𝑥 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7271cbvmptv 5160 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) = (𝑏 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7372elrnmpt 5821 . . . . . . . . . . . . . . . . . . . 20 (𝑢 ∈ V → (𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ↔ ∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
7470, 73ax-mp 5 . . . . . . . . . . . . . . . . . . 19 (𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ↔ ∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7574biimpi 218 . . . . . . . . . . . . . . . . . 18 (𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) → ∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7675adantl 484 . . . . . . . . . . . . . . . . 17 ((𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))) → ∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7769, 76jca 514 . . . . . . . . . . . . . . . 16 ((𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))) → (∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ ∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
78 reeanv 3366 . . . . . . . . . . . . . . . 16 (∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)(𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) ↔ (∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ ∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
7977, 78sylibr 236 . . . . . . . . . . . . . . 15 ((𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))) → ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)(𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
8079adantl 484 . . . . . . . . . . . . . 14 ((𝜑 ∧ (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)))) → ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)(𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
81 eqid 2819 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) = (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
82 elinel1 4170 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → 𝑎 ∈ 𝒫 𝐴)
83 elpwi 4549 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑎 ∈ 𝒫 𝐴𝑎𝐴)
84 id 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑎𝐴𝑎𝐴)
8584, 6sstrdi 3977 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑎𝐴𝑎𝑈)
8683, 85syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑎 ∈ 𝒫 𝐴𝑎𝑈)
8782, 86syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → 𝑎𝑈)
8887adantr 483 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑎𝑈)
89 elinel1 4170 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏 ∈ 𝒫 𝐵)
90 elpwi 4549 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑏 ∈ 𝒫 𝐵𝑏𝐵)
91 id 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑏𝐵𝑏𝐵)
9291, 19sstrdi 3977 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑏𝐵𝑏𝑈)
9390, 92syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑏 ∈ 𝒫 𝐵𝑏𝑈)
9489, 93syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏𝑈)
9594adantl 484 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑏𝑈)
9688, 95unssd 4160 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ⊆ 𝑈)
97 vex 3496 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 𝑎 ∈ V
98 vex 3496 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 𝑏 ∈ V
9997, 98unex 7461 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑎𝑏) ∈ V
10099elpw 4544 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎𝑏) ∈ 𝒫 𝑈 ↔ (𝑎𝑏) ⊆ 𝑈)
10196, 100sylibr 236 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ∈ 𝒫 𝑈)
102 elinel2 4171 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → 𝑎 ∈ Fin)
103102adantr 483 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑎 ∈ Fin)
104 elinel2 4171 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏 ∈ Fin)
105104adantl 484 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑏 ∈ Fin)
106 unfi 8777 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ Fin ∧ 𝑏 ∈ Fin) → (𝑎𝑏) ∈ Fin)
107103, 105, 106syl2anc 586 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ∈ Fin)
108101, 107elind 4169 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ∈ (𝒫 𝑈 ∩ Fin))
109108adantl 484 . . . . . . . . . . . . . . . . . . . . . 22 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) ∈ (𝒫 𝑈 ∩ Fin))
110109ad2antrr 724 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → (𝑎𝑏) ∈ (𝒫 𝑈 ∩ Fin))
111 simpl 485 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → 𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
112 simpr 487 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
113111, 112oveq12d 7166 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → (𝑣 + 𝑢) = (Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) + Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
114113adantl 484 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) → (𝑣 + 𝑢) = (Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) + Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
11582, 83syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → 𝑎𝐴)
116115sselda 3965 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑦𝑎) → 𝑦𝐴)
117 fvres 6682 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦𝐴 → ((𝐹𝐴)‘𝑦) = (𝐹𝑦))
118116, 117syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑦𝑎) → ((𝐹𝐴)‘𝑦) = (𝐹𝑦))
119118sumeq2dv 15052 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑎 (𝐹𝑦))
120119adantr 483 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑎 (𝐹𝑦))
12189, 90syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏𝐵)
122121sselda 3965 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝑏 ∈ (𝒫 𝐵 ∩ Fin) ∧ 𝑦𝑏) → 𝑦𝐵)
123 fvres 6682 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦𝐵 → ((𝐹𝐵)‘𝑦) = (𝐹𝑦))
124122, 123syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑏 ∈ (𝒫 𝐵 ∩ Fin) ∧ 𝑦𝑏) → ((𝐹𝐵)‘𝑦) = (𝐹𝑦))
125124sumeq2dv 15052 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → Σ𝑦𝑏 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑏 (𝐹𝑦))
126125adantl 484 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → Σ𝑦𝑏 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑏 (𝐹𝑦))
127120, 126oveq12d 7166 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) + Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
128127adantr 483 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) → (Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) + Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
129114, 128eqtrd 2854 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) → (𝑣 + 𝑢) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
130129ad4ant23 751 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → (𝑣 + 𝑢) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
131 simpr 487 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → 𝑟 = (𝑣 + 𝑢))
132 sge0resplit.in0 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝜑 → (𝐴𝐵) = ∅)
133132adantr 483 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝐴𝐵) = ∅)
134115ad2antrl 726 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → 𝑎𝐴)
135121adantl 484 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑏𝐵)
136135adantl 484 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → 𝑏𝐵)
137 ssin0 41307 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝐴𝐵) = ∅ ∧ 𝑎𝐴𝑏𝐵) → (𝑎𝑏) = ∅)
138133, 134, 136, 137syl3anc 1365 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) = ∅)
139 eqidd 2820 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) = (𝑎𝑏))
140107adantl 484 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) ∈ Fin)
141 rge0ssre 12836 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (0[,)+∞) ⊆ ℝ
142 ax-resscn 10586 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ℝ ⊆ ℂ
143141, 142sstri 3974 . . . . . . . . . . . . . . . . . . . . . . . . 25 (0[,)+∞) ⊆ ℂ
1442, 27fge0iccico 42642 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝜑𝐹:𝑈⟶(0[,)+∞))
145144ad2antrr 724 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → 𝐹:𝑈⟶(0[,)+∞))
14696sselda 3965 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) ∧ 𝑦 ∈ (𝑎𝑏)) → 𝑦𝑈)
147146adantll 712 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → 𝑦𝑈)
148145, 147ffvelrnd 6845 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → (𝐹𝑦) ∈ (0[,)+∞))
149143, 148sseldi 3963 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → (𝐹𝑦) ∈ ℂ)
150138, 139, 140, 149fsumsplit 15089 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
151150ad2antrr 724 . . . . . . . . . . . . . . . . . . . . . 22 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
152130, 131, 1513eqtr4d 2864 . . . . . . . . . . . . . . . . . . . . 21 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → 𝑟 = Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦))
153 sumeq1 15037 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 = (𝑎𝑏) → Σ𝑦𝑥 (𝐹𝑦) = Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦))
154153rspceeqv 3636 . . . . . . . . . . . . . . . . . . . . 21 (((𝑎𝑏) ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦)) → ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦))
155110, 152, 154syl2anc 586 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦))
15655a1i 11 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → 𝑟 ∈ V)
15781, 155, 156elrnmptd 41429 . . . . . . . . . . . . . . . . . . 19 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))
158157ex 415 . . . . . . . . . . . . . . . . . 18 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) → (𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
159158ex 415 . . . . . . . . . . . . . . . . 17 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → (𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))))
160159ex 415 . . . . . . . . . . . . . . . 16 (𝜑 → ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → (𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))))
161160rexlimdvv 3291 . . . . . . . . . . . . . . 15 (𝜑 → (∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)(𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → (𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))))
162161imp 409 . . . . . . . . . . . . . 14 ((𝜑 ∧ ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)(𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) → (𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
16362, 80, 162syl2anc 586 . . . . . . . . . . . . 13 ((𝜑 ∧ (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)))) → (𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
164163ex 415 . . . . . . . . . . . 12 (𝜑 → ((𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))) → (𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))))
165164rexlimdvv 3291 . . . . . . . . . . 11 (𝜑 → (∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
166165imp 409 . . . . . . . . . 10 ((𝜑 ∧ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))
16754, 61, 166syl2anc 586 . . . . . . . . 9 ((𝜑𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)}) → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))
168167ex 415 . . . . . . . 8 (𝜑 → (𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} → 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
16981elrnmpt 5821 . . . . . . . . . . . . 13 (𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) → (𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) ↔ ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦)))
170169ibi 269 . . . . . . . . . . . 12 (𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) → ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦))
171170adantl 484 . . . . . . . . . . 11 ((𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))) → ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦))
172 nfv 1908 . . . . . . . . . . . . 13 𝑥𝜑
173 nfcv 2975 . . . . . . . . . . . . . 14 𝑥𝑟
174 nfmpt1 5155 . . . . . . . . . . . . . . 15 𝑥(𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
175174nfrn 5817 . . . . . . . . . . . . . 14 𝑥ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
176173, 175nfel 2990 . . . . . . . . . . . . 13 𝑥 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
177172, 176nfan 1893 . . . . . . . . . . . 12 𝑥(𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))
178 nfmpt1 5155 . . . . . . . . . . . . . 14 𝑥(𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))
179178nfrn 5817 . . . . . . . . . . . . 13 𝑥ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))
180 nfmpt1 5155 . . . . . . . . . . . . . . 15 𝑥(𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))
181180nfrn 5817 . . . . . . . . . . . . . 14 𝑥ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))
182 nfv 1908 . . . . . . . . . . . . . 14 𝑥 𝑟 = (𝑣 + 𝑢)
183181, 182nfrex 3307 . . . . . . . . . . . . 13 𝑥𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)
184179, 183nfrex 3307 . . . . . . . . . . . 12 𝑥𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)
185 inss2 4204 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝐴) ⊆ 𝐴
186185sseli 3961 . . . . . . . . . . . . . . . . . . . 20 (𝑦 ∈ (𝑥𝐴) → 𝑦𝐴)
187186adantl 484 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑦 ∈ (𝑥𝐴)) → 𝑦𝐴)
188117eqcomd 2825 . . . . . . . . . . . . . . . . . . 19 (𝑦𝐴 → (𝐹𝑦) = ((𝐹𝐴)‘𝑦))
189187, 188syl 17 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑦 ∈ (𝑥𝐴)) → (𝐹𝑦) = ((𝐹𝐴)‘𝑦))
190189sumeq2dv 15052 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦))
191 sumeq1 15037 . . . . . . . . . . . . . . . . . . 19 (𝑥 = 𝑧 → Σ𝑦𝑥 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
192191cbvmptv 5160 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) = (𝑧 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
193 vex 3496 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑥 ∈ V
194193inex1 5212 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥𝐴) ∈ V
195194elpw 4544 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑥𝐴) ∈ 𝒫 𝐴 ↔ (𝑥𝐴) ⊆ 𝐴)
196185, 195mpbir 233 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝐴) ∈ 𝒫 𝐴
197196a1i 11 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ∈ 𝒫 𝐴)
198 elinel2 4171 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥 ∈ Fin)
199 inss1 4203 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝐴) ⊆ 𝑥
200199a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ⊆ 𝑥)
201 ssfi 8730 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥 ∈ Fin ∧ (𝑥𝐴) ⊆ 𝑥) → (𝑥𝐴) ∈ Fin)
202198, 200, 201syl2anc 586 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ∈ Fin)
203197, 202elind 4169 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ∈ (𝒫 𝐴 ∩ Fin))
204 eqidd 2820 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦))
205 sumeq1 15037 . . . . . . . . . . . . . . . . . . . 20 (𝑧 = (𝑥𝐴) → Σ𝑦𝑧 ((𝐹𝐴)‘𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦))
206205rspceeqv 3636 . . . . . . . . . . . . . . . . . . 19 (((𝑥𝐴) ∈ (𝒫 𝐴 ∩ Fin) ∧ Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦)) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
207203, 204, 206syl2anc 586 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
208 sumex 15036 . . . . . . . . . . . . . . . . . . 19 Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) ∈ V
209208a1i 11 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) ∈ V)
210192, 207, 209elrnmptd 41429 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)))
211190, 210eqeltrd 2911 . . . . . . . . . . . . . . . 16 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)))
2122113ad2ant2 1128 . . . . . . . . . . . . . . 15 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)))
213 sumeq1 15037 . . . . . . . . . . . . . . . . . 18 (𝑥 = 𝑧 → Σ𝑦𝑥 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
214213cbvmptv 5160 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) = (𝑧 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
215 inss2 4204 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝐵) ⊆ 𝐵
216193inex1 5212 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝐵) ∈ V
217216elpw 4544 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥𝐵) ∈ 𝒫 𝐵 ↔ (𝑥𝐵) ⊆ 𝐵)
218215, 217mpbir 233 . . . . . . . . . . . . . . . . . . . 20 (𝑥𝐵) ∈ 𝒫 𝐵
219218a1i 11 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → (𝑥𝐵) ∈ 𝒫 𝐵)
220 inss1 4203 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝐵) ⊆ 𝑥
221220a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐵) ⊆ 𝑥)
222 ssfi 8730 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥 ∈ Fin ∧ (𝑥𝐵) ⊆ 𝑥) → (𝑥𝐵) ∈ Fin)
223198, 221, 222syl2anc 586 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐵) ∈ Fin)
2242233ad2ant2 1128 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → (𝑥𝐵) ∈ Fin)
225219, 224elind 4169 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → (𝑥𝐵) ∈ (𝒫 𝐵 ∩ Fin))
226215sseli 3961 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦 ∈ (𝑥𝐵) → 𝑦𝐵)
227123eqcomd 2825 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦𝐵 → (𝐹𝑦) = ((𝐹𝐵)‘𝑦))
228226, 227syl 17 . . . . . . . . . . . . . . . . . . . . 21 (𝑦 ∈ (𝑥𝐵) → (𝐹𝑦) = ((𝐹𝐵)‘𝑦))
229228sumeq2i 15048 . . . . . . . . . . . . . . . . . . . 20 Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦)
230229a1i 11 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦))
2312303adant3 1126 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦))
232 sumeq1 15037 . . . . . . . . . . . . . . . . . . 19 (𝑧 = (𝑥𝐵) → Σ𝑦𝑧 ((𝐹𝐵)‘𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦))
233232rspceeqv 3636 . . . . . . . . . . . . . . . . . 18 (((𝑥𝐵) ∈ (𝒫 𝐵 ∩ Fin) ∧ Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦)) → ∃𝑧 ∈ (𝒫 𝐵 ∩ Fin)Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
234225, 231, 233syl2anc 586 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → ∃𝑧 ∈ (𝒫 𝐵 ∩ Fin)Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
235 sumex 15036 . . . . . . . . . . . . . . . . . 18 Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) ∈ V
236235a1i 11 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) ∈ V)
237214, 234, 236elrnmptd 41429 . . . . . . . . . . . . . . . 16 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)))
238 simp3 1132 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → 𝑟 = Σ𝑦𝑥 (𝐹𝑦))
239185a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝜑 → (𝑥𝐴) ⊆ 𝐴)
240215a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝜑 → (𝑥𝐵) ⊆ 𝐵)
241 ssin0 41307 . . . . . . . . . . . . . . . . . . . . 21 (((𝐴𝐵) = ∅ ∧ (𝑥𝐴) ⊆ 𝐴 ∧ (𝑥𝐵) ⊆ 𝐵) → ((𝑥𝐴) ∩ (𝑥𝐵)) = ∅)
242132, 239, 240, 241syl3anc 1365 . . . . . . . . . . . . . . . . . . . 20 (𝜑 → ((𝑥𝐴) ∩ (𝑥𝐵)) = ∅)
243242adantr 483 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → ((𝑥𝐴) ∩ (𝑥𝐵)) = ∅)
244 elinel1 4170 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥 ∈ 𝒫 𝑈)
245 elpwi 4549 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 ∈ 𝒫 𝑈𝑥𝑈)
246244, 245syl 17 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥𝑈)
2474ineq2i 4184 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥𝑈) = (𝑥 ∩ (𝐴𝐵))
248247a1i 11 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝑈 → (𝑥𝑈) = (𝑥 ∩ (𝐴𝐵)))
249 dfss 3951 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥𝑈𝑥 = (𝑥𝑈))
250249biimpi 218 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝑈𝑥 = (𝑥𝑈))
251 indi 4248 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑥 ∩ (𝐴𝐵)) = ((𝑥𝐴) ∪ (𝑥𝐵))
252251eqcomi 2828 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑥𝐴) ∪ (𝑥𝐵)) = (𝑥 ∩ (𝐴𝐵))
253252a1i 11 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝑈 → ((𝑥𝐴) ∪ (𝑥𝐵)) = (𝑥 ∩ (𝐴𝐵)))
254248, 250, 2533eqtr4d 2864 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝑈𝑥 = ((𝑥𝐴) ∪ (𝑥𝐵)))
255246, 254syl 17 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥 = ((𝑥𝐴) ∪ (𝑥𝐵)))
256255adantl 484 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → 𝑥 = ((𝑥𝐴) ∪ (𝑥𝐵)))
257198adantl 484 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → 𝑥 ∈ Fin)
258144ad2antrr 724 . . . . . . . . . . . . . . . . . . . . 21 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → 𝐹:𝑈⟶(0[,)+∞))
259246sselda 3965 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑦𝑥) → 𝑦𝑈)
260259adantll 712 . . . . . . . . . . . . . . . . . . . . 21 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → 𝑦𝑈)
261258, 260ffvelrnd 6845 . . . . . . . . . . . . . . . . . . . 20 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → (𝐹𝑦) ∈ (0[,)+∞))
262143, 261sseldi 3963 . . . . . . . . . . . . . . . . . . 19 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → (𝐹𝑦) ∈ ℂ)
263243, 256, 257, 262fsumsplit 15089 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → Σ𝑦𝑥 (𝐹𝑦) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
2642633adant3 1126 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦𝑥 (𝐹𝑦) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
265238, 264eqtrd 2854 . . . . . . . . . . . . . . . 16 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → 𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
266 oveq2 7156 . . . . . . . . . . . . . . . . 17 (𝑢 = Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) → (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
267266rspceeqv 3636 . . . . . . . . . . . . . . . 16 ((Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ∧ 𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦))) → ∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢))
268237, 265, 267syl2anc 586 . . . . . . . . . . . . . . 15 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → ∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢))
269 oveq1 7155 . . . . . . . . . . . . . . . . . 18 (𝑣 = Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) → (𝑣 + 𝑢) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢))
270269eqeq2d 2830 . . . . . . . . . . . . . . . . 17 (𝑣 = Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) → (𝑟 = (𝑣 + 𝑢) ↔ 𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢)))
271270rexbidv 3295 . . . . . . . . . . . . . . . 16 (𝑣 = Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) → (∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢) ↔ ∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢)))
272271rspcev 3621 . . . . . . . . . . . . . . 15 ((Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ ∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢)) → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))
273212, 268, 272syl2anc 586 . . . . . . . . . . . . . 14 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))
2742733exp 1113 . . . . . . . . . . . . 13 (𝜑 → (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑟 = Σ𝑦𝑥 (𝐹𝑦) → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))))
275274adantr 483 . . . . . . . . . . . 12 ((𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))) → (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑟 = Σ𝑦𝑥 (𝐹𝑦) → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))))
276177, 184, 275rexlimd 3315 . . . . . . . . . . 11 ((𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))) → (∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦) → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)))
277171, 276mpd 15 . . . . . . . . . 10 ((𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))) → ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢))
278277, 59sylibr 236 . . . . . . . . 9 ((𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))) → 𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)})
279278ex 415 . . . . . . . 8 (𝜑 → (𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) → 𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)}))
280168, 279impbid 214 . . . . . . 7 (𝜑 → (𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} ↔ 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
281280alrimiv 1921 . . . . . 6 (𝜑 → ∀𝑟(𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} ↔ 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
282 dfcleq 2813 . . . . . 6 ({𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} = ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) ↔ ∀𝑟(𝑟 ∈ {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} ↔ 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))))
283281, 282sylibr 236 . . . . 5 (𝜑 → {𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)} = ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))
284283supeq1d 8902 . . . 4 (𝜑 → sup({𝑧 ∣ ∃𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑧 = (𝑣 + 𝑢)}, ℝ, < ) = sup(ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)), ℝ, < ))
28526, 53, 2843eqtrrd 2859 . . 3 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)), ℝ, < ) = (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) +𝑒 sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < )))
28613, 2, 14sge0supre 42661 . . 3 (𝜑 → (Σ^𝐹) = sup(ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)), ℝ, < ))
28716, 23oveq12d 7166 . . 3 (𝜑 → ((Σ^‘(𝐹𝐴)) +𝑒^‘(𝐹𝐵))) = (sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) +𝑒 sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < )))
288285, 286, 2873eqtr4d 2864 . 2 (𝜑 → (Σ^𝐹) = ((Σ^‘(𝐹𝐴)) +𝑒^‘(𝐹𝐵))))
289 rexadd 12617 . . 3 (((Σ^‘(𝐹𝐴)) ∈ ℝ ∧ (Σ^‘(𝐹𝐵)) ∈ ℝ) → ((Σ^‘(𝐹𝐴)) +𝑒^‘(𝐹𝐵))) = ((Σ^‘(𝐹𝐴)) + (Σ^‘(𝐹𝐵))))
29015, 22, 289syl2anc 586 . 2 (𝜑 → ((Σ^‘(𝐹𝐴)) +𝑒^‘(𝐹𝐵))) = ((Σ^‘(𝐹𝐴)) + (Σ^‘(𝐹𝐵))))
291288, 290eqtrd 2854 1 (𝜑 → (Σ^𝐹) = ((Σ^‘(𝐹𝐴)) + (Σ^‘(𝐹𝐵))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 208  wa 398  w3a 1081  wal 1528   = wceq 1530  wcel 2107  {cab 2797  wne 3014  wral 3136  wrex 3137  Vcvv 3493  cun 3932  cin 3933  wss 3934  c0 4289  𝒫 cpw 4537   class class class wbr 5057  cmpt 5137  ran crn 5549  cres 5550  wf 6344  cfv 6348  (class class class)co 7148  Fincfn 8501  supcsup 8896  cc 10527  cr 10528  0cc0 10529   + caddc 10532  +∞cpnf 10664  *cxr 10666   < clt 10667  cle 10668   +𝑒 cxad 12497  [,)cico 12732  [,]cicc 12733  Σcsu 15034  Σ^csumge0 42634
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2791  ax-rep 5181  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453  ax-inf2 9096  ax-cnex 10585  ax-resscn 10586  ax-1cn 10587  ax-icn 10588  ax-addcl 10589  ax-addrcl 10590  ax-mulcl 10591  ax-mulrcl 10592  ax-mulcom 10593  ax-addass 10594  ax-mulass 10595  ax-distr 10596  ax-i2m1 10597  ax-1ne0 10598  ax-1rid 10599  ax-rnegex 10600  ax-rrecex 10601  ax-cnre 10602  ax-pre-lttri 10603  ax-pre-lttrn 10604  ax-pre-ltadd 10605  ax-pre-mulgt0 10606  ax-pre-sup 10607
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1082  df-3an 1083  df-tru 1533  df-fal 1543  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-nel 3122  df-ral 3141  df-rex 3142  df-reu 3143  df-rmo 3144  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-pss 3952  df-nul 4290  df-if 4466  df-pw 4539  df-sn 4560  df-pr 4562  df-tp 4564  df-op 4566  df-uni 4831  df-int 4868  df-iun 4912  df-br 5058  df-opab 5120  df-mpt 5138  df-tr 5164  df-id 5453  df-eprel 5458  df-po 5467  df-so 5468  df-fr 5507  df-se 5508  df-we 5509  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-pred 6141  df-ord 6187  df-on 6188  df-lim 6189  df-suc 6190  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-isom 6357  df-riota 7106  df-ov 7151  df-oprab 7152  df-mpo 7153  df-om 7573  df-1st 7681  df-2nd 7682  df-wrecs 7939  df-recs 8000  df-rdg 8038  df-1o 8094  df-oadd 8098  df-er 8281  df-en 8502  df-dom 8503  df-sdom 8504  df-fin 8505  df-sup 8898  df-oi 8966  df-card 9360  df-pnf 10669  df-mnf 10670  df-xr 10671  df-ltxr 10672  df-le 10673  df-sub 10864  df-neg 10865  df-div 11290  df-nn 11631  df-2 11692  df-3 11693  df-n0 11890  df-z 11974  df-uz 12236  df-rp 12382  df-xadd 12500  df-ico 12736  df-icc 12737  df-fz 12885  df-fzo 13026  df-seq 13362  df-exp 13422  df-hash 13683  df-cj 14450  df-re 14451  df-im 14452  df-sqrt 14586  df-abs 14587  df-clim 14837  df-sum 15035  df-sumge0 42635
This theorem is referenced by:  sge0split  42681
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