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Theorem sge0resplit 40941
Description: Σ^ splits into two parts, when it's a real number. This is a special case of sge0split 40944. (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 3809 . . . . . . . . . 10 𝐴 ⊆ (𝐴𝐵)
4 sge0resplit.u . . . . . . . . . . 11 𝑈 = (𝐴𝐵)
54eqcomi 2660 . . . . . . . . . 10 (𝐴𝐵) = 𝑈
63, 5sseqtri 3670 . . . . . . . . 9 𝐴𝑈
76a1i 11 . . . . . . . 8 (𝜑𝐴𝑈)
82, 7fssresd 6109 . . . . . . 7 (𝜑 → (𝐹𝐴):𝐴⟶(0[,]+∞))
94a1i 11 . . . . . . . . 9 (𝜑𝑈 = (𝐴𝐵))
10 sge0resplit.b . . . . . . . . . 10 (𝜑𝐵𝑊)
11 unexg 7001 . . . . . . . . . 10 ((𝐴𝑉𝐵𝑊) → (𝐴𝐵) ∈ V)
121, 10, 11syl2anc 694 . . . . . . . . 9 (𝜑 → (𝐴𝐵) ∈ V)
139, 12eqeltrd 2730 . . . . . . . 8 (𝜑𝑈 ∈ V)
14 sge0resplit.re . . . . . . . 8 (𝜑 → (Σ^𝐹) ∈ ℝ)
1513, 2, 14sge0ssre 40932 . . . . . . 7 (𝜑 → (Σ^‘(𝐹𝐴)) ∈ ℝ)
161, 8, 15sge0supre 40924 . . . . . 6 (𝜑 → (Σ^‘(𝐹𝐴)) = sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ))
1716, 15eqeltrrd 2731 . . . . 5 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ, < ) ∈ ℝ)
18 ssun2 3810 . . . . . . . . . 10 𝐵 ⊆ (𝐴𝐵)
1918, 5sseqtri 3670 . . . . . . . . 9 𝐵𝑈
2019a1i 11 . . . . . . . 8 (𝜑𝐵𝑈)
212, 20fssresd 6109 . . . . . . 7 (𝜑 → (𝐹𝐵):𝐵⟶(0[,]+∞))
2213, 2, 14sge0ssre 40932 . . . . . . 7 (𝜑 → (Σ^‘(𝐹𝐵)) ∈ ℝ)
2310, 21, 22sge0supre 40924 . . . . . 6 (𝜑 → (Σ^‘(𝐹𝐵)) = sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < ))
2423, 22eqeltrrd 2731 . . . . 5 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ, < ) ∈ ℝ)
25 rexadd 12101 . . . . 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 694 . . . 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 40923 . . . . . . . 8 (𝜑 → ¬ +∞ ∈ ran 𝐹)
28 nelrnres 39688 . . . . . . . 8 (¬ +∞ ∈ ran 𝐹 → ¬ +∞ ∈ ran (𝐹𝐴))
2927, 28syl 17 . . . . . . 7 (𝜑 → ¬ +∞ ∈ ran (𝐹𝐴))
308, 29fge0iccico 40905 . . . . . 6 (𝜑 → (𝐹𝐴):𝐴⟶(0[,)+∞))
3130sge0rnre 40899 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ⊆ ℝ)
32 sge0rnn0 40903 . . . . . 6 ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ≠ ∅
3332a1i 11 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ≠ ∅)
341, 30sge0reval 40907 . . . . . . . 8 (𝜑 → (Σ^‘(𝐹𝐴)) = sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ))
3534eqcomd 2657 . . . . . . 7 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ) = (Σ^‘(𝐹𝐴)))
3635, 15eqeltrd 2730 . . . . . 6 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)), ℝ*, < ) ∈ ℝ)
37 supxrre3 39854 . . . . . . 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 694 . . . . . 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 222 . . . . 5 (𝜑 → ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))𝑡𝑤)
40 nelrnres 39688 . . . . . . . 8 (¬ +∞ ∈ ran 𝐹 → ¬ +∞ ∈ ran (𝐹𝐵))
4127, 40syl 17 . . . . . . 7 (𝜑 → ¬ +∞ ∈ ran (𝐹𝐵))
4221, 41fge0iccico 40905 . . . . . 6 (𝜑 → (𝐹𝐵):𝐵⟶(0[,)+∞))
4342sge0rnre 40899 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ⊆ ℝ)
44 sge0rnn0 40903 . . . . . 6 ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ≠ ∅
4544a1i 11 . . . . 5 (𝜑 → ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) ≠ ∅)
4610, 42sge0reval 40907 . . . . . . . 8 (𝜑 → (Σ^‘(𝐹𝐵)) = sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ))
4746eqcomd 2657 . . . . . . 7 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ) = (Σ^‘(𝐹𝐵)))
4847, 22eqeltrd 2730 . . . . . 6 (𝜑 → sup(ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)), ℝ*, < ) ∈ ℝ)
49 supxrre3 39854 . . . . . . 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 694 . . . . . 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 222 . . . . 5 (𝜑 → ∃𝑤 ∈ ℝ ∀𝑡 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑡𝑤)
52 eqid 2651 . . . . 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 11029 . . . 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 472 . . . . . . . . . 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 3234 . . . . . . . . . . . . 13 𝑟 ∈ V
56 eqeq1 2655 . . . . . . . . . . . . . . 15 (𝑧 = 𝑟 → (𝑧 = (𝑣 + 𝑢) ↔ 𝑟 = (𝑣 + 𝑢)))
5756rexbidv 3081 . . . . . . . . . . . . . 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 3081 . . . . . . . . . . . . 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 3382 . . . . . . . . . . . 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 206 . . . . . . . . . . 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 481 . . . . . . . . . 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 472 . . . . . . . . . . . . . 14 ((𝜑 ∧ (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) ∧ 𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)))) → 𝜑)
63 vex 3234 . . . . . . . . . . . . . . . . . . . 20 𝑣 ∈ V
64 sumeq1 14463 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 = 𝑎 → Σ𝑦𝑥 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
6564cbvmptv 4783 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) = (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
6665elrnmpt 5404 . . . . . . . . . . . . . . . . . . . 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 206 . . . . . . . . . . . . . . . . . 18 (𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) → ∃𝑎 ∈ (𝒫 𝐴 ∩ Fin)𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
6968adantr 480 . . . . . . . . . . . . . . . . 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 3234 . . . . . . . . . . . . . . . . . . . 20 𝑢 ∈ V
71 sumeq1 14463 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 = 𝑏 → Σ𝑦𝑥 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7271cbvmptv 4783 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) = (𝑏 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7372elrnmpt 5404 . . . . . . . . . . . . . . . . . . . 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 206 . . . . . . . . . . . . . . . . . 18 (𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) → ∃𝑏 ∈ (𝒫 𝐵 ∩ Fin)𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
7675adantl 481 . . . . . . . . . . . . . . . . 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 553 . . . . . . . . . . . . . . . 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 3136 . . . . . . . . . . . . . . . 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 224 . . . . . . . . . . . . . . 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 481 . . . . . . . . . . . . . 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 2651 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) = (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
82 elinel1 3832 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → 𝑎 ∈ 𝒫 𝐴)
83 elpwi 4201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑎 ∈ 𝒫 𝐴𝑎𝐴)
84 id 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑎𝐴𝑎𝐴)
8584, 6syl6ss 3648 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑎𝐴𝑎𝑈)
8683, 85syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑎 ∈ 𝒫 𝐴𝑎𝑈)
8782, 86syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → 𝑎𝑈)
8887adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑎𝑈)
89 elinel1 3832 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏 ∈ 𝒫 𝐵)
90 elpwi 4201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑏 ∈ 𝒫 𝐵𝑏𝐵)
91 id 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑏𝐵𝑏𝐵)
9291, 19syl6ss 3648 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑏𝐵𝑏𝑈)
9390, 92syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑏 ∈ 𝒫 𝐵𝑏𝑈)
9489, 93syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏𝑈)
9594adantl 481 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑏𝑈)
9688, 95unssd 3822 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ⊆ 𝑈)
97 vex 3234 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 𝑎 ∈ V
98 vex 3234 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 𝑏 ∈ V
9997, 98unex 6998 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑎𝑏) ∈ V
10099elpw 4197 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎𝑏) ∈ 𝒫 𝑈 ↔ (𝑎𝑏) ⊆ 𝑈)
10196, 100sylibr 224 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ∈ 𝒫 𝑈)
102 elinel2 3833 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → 𝑎 ∈ Fin)
103102adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑎 ∈ Fin)
104 elinel2 3833 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏 ∈ Fin)
105104adantl 481 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑏 ∈ Fin)
106 unfi 8268 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ Fin ∧ 𝑏 ∈ Fin) → (𝑎𝑏) ∈ Fin)
107103, 105, 106syl2anc 694 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ∈ Fin)
108101, 107elind 3831 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (𝑎𝑏) ∈ (𝒫 𝑈 ∩ Fin))
109108adantl 481 . . . . . . . . . . . . . . . . . . . . . 22 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) ∈ (𝒫 𝑈 ∩ Fin))
110109ad2antrr 762 . . . . . . . . . . . . . . . . . . . . 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 472 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → 𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦))
112 simpr 476 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))
113111, 112oveq12d 6708 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) → (𝑣 + 𝑢) = (Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) + Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)))
114113adantl 481 . . . . . . . . . . . . . . . . . . . . . . . 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 3636 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑦𝑎) → 𝑦𝐴)
117 fvres 6245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦𝐴 → ((𝐹𝐴)‘𝑦) = (𝐹𝑦))
118116, 117syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑦𝑎) → ((𝐹𝐴)‘𝑦) = (𝐹𝑦))
119118sumeq2dv 14477 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑎 ∈ (𝒫 𝐴 ∩ Fin) → Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑎 (𝐹𝑦))
120119adantr 480 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑎 (𝐹𝑦))
12189, 90syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → 𝑏𝐵)
122121sselda 3636 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝑏 ∈ (𝒫 𝐵 ∩ Fin) ∧ 𝑦𝑏) → 𝑦𝐵)
123 fvres 6245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦𝐵 → ((𝐹𝐵)‘𝑦) = (𝐹𝑦))
124122, 123syl 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑏 ∈ (𝒫 𝐵 ∩ Fin) ∧ 𝑦𝑏) → ((𝐹𝐵)‘𝑦) = (𝐹𝑦))
125124sumeq2dv 14477 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑏 ∈ (𝒫 𝐵 ∩ Fin) → Σ𝑦𝑏 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑏 (𝐹𝑦))
126125adantl 481 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → Σ𝑦𝑏 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑏 (𝐹𝑦))
127120, 126oveq12d 6708 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → (Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) + Σ𝑦𝑏 ((𝐹𝐵)‘𝑦)) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
128127adantr 480 . . . . . . . . . . . . . . . . . . . . . . . 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 2685 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) → (𝑣 + 𝑢) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
130129ad4ant23 1325 . . . . . . . . . . . . . . . . . . . . . 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 476 . . . . . . . . . . . . . . . . . . . . . 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 480 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝐴𝐵) = ∅)
134115ad2antrl 764 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → 𝑎𝐴)
135121adantl 481 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) → 𝑏𝐵)
136135adantl 481 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → 𝑏𝐵)
137 ssin0 39537 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝐴𝐵) = ∅ ∧ 𝑎𝐴𝑏𝐵) → (𝑎𝑏) = ∅)
138133, 134, 136, 137syl3anc 1366 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) = ∅)
139 eqidd 2652 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) = (𝑎𝑏))
140107adantl 481 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → (𝑎𝑏) ∈ Fin)
141 rge0ssre 12318 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (0[,)+∞) ⊆ ℝ
142 ax-resscn 10031 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ℝ ⊆ ℂ
143141, 142sstri 3645 . . . . . . . . . . . . . . . . . . . . . . . . 25 (0[,)+∞) ⊆ ℂ
1442, 27fge0iccico 40905 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝜑𝐹:𝑈⟶(0[,)+∞))
145144ad2antrr 762 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → 𝐹:𝑈⟶(0[,)+∞))
14696sselda 3636 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin)) ∧ 𝑦 ∈ (𝑎𝑏)) → 𝑦𝑈)
147146adantll 750 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → 𝑦𝑈)
148145, 147ffvelrnd 6400 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → (𝐹𝑦) ∈ (0[,)+∞))
149143, 148sseldi 3634 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ 𝑦 ∈ (𝑎𝑏)) → (𝐹𝑦) ∈ ℂ)
150138, 139, 140, 149fsumsplit 14515 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) → Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦) = (Σ𝑦𝑎 (𝐹𝑦) + Σ𝑦𝑏 (𝐹𝑦)))
151150ad2antrr 762 . . . . . . . . . . . . . . . . . . . . . 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 2695 . . . . . . . . . . . . . . . . . . . . 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 14463 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥 = (𝑎𝑏) → Σ𝑦𝑥 (𝐹𝑦) = Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦))
154153eqeq2d 2661 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 = (𝑎𝑏) → (𝑟 = Σ𝑦𝑥 (𝐹𝑦) ↔ 𝑟 = Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦)))
155154rspcev 3340 . . . . . . . . . . . . . . . . . . . . 21 (((𝑎𝑏) ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦 ∈ (𝑎𝑏)(𝐹𝑦)) → ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦))
156110, 152, 155syl2anc 694 . . . . . . . . . . . . . . . . . . . 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))
15755a1i 11 . . . . . . . . . . . . . . . . . . . 20 ((((𝜑 ∧ (𝑎 ∈ (𝒫 𝐴 ∩ Fin) ∧ 𝑏 ∈ (𝒫 𝐵 ∩ Fin))) ∧ (𝑣 = Σ𝑦𝑎 ((𝐹𝐴)‘𝑦) ∧ 𝑢 = Σ𝑦𝑏 ((𝐹𝐵)‘𝑦))) ∧ 𝑟 = (𝑣 + 𝑢)) → 𝑟 ∈ V)
15881, 156, 157elrnmptd 39680 . . . . . . . . . . . . . . . . . . 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)))
159158ex 449 . . . . . . . . . . . . . . . . . 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))))
160159ex 449 . . . . . . . . . . . . . . . . 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)))))
161160ex 449 . . . . . . . . . . . . . . . 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))))))
162161rexlimdvv 3066 . . . . . . . . . . . . . . 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)))))
163162imp 444 . . . . . . . . . . . . . 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))))
16462, 80, 163syl2anc 694 . . . . . . . . . . . . 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))))
165164ex 449 . . . . . . . . . . . 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)))))
166165rexlimdvv 3066 . . . . . . . . . . 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))))
167166imp 444 . . . . . . . . . 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)))
16854, 61, 167syl2anc 694 . . . . . . . . 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)))
169168ex 449 . . . . . . . 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))))
17081elrnmpt 5404 . . . . . . . . . . . . 13 (𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) → (𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) ↔ ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦)))
171170ibi 256 . . . . . . . . . . . 12 (𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)) → ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦))
172171adantl 481 . . . . . . . . . . 11 ((𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))) → ∃𝑥 ∈ (𝒫 𝑈 ∩ Fin)𝑟 = Σ𝑦𝑥 (𝐹𝑦))
173 nfv 1883 . . . . . . . . . . . . 13 𝑥𝜑
174 nfcv 2793 . . . . . . . . . . . . . 14 𝑥𝑟
175 nfmpt1 4780 . . . . . . . . . . . . . . 15 𝑥(𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
176175nfrn 5400 . . . . . . . . . . . . . 14 𝑥ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
177174, 176nfel 2806 . . . . . . . . . . . . 13 𝑥 𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦))
178173, 177nfan 1868 . . . . . . . . . . . 12 𝑥(𝜑𝑟 ∈ ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)))
179 nfmpt1 4780 . . . . . . . . . . . . . 14 𝑥(𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))
180179nfrn 5400 . . . . . . . . . . . . 13 𝑥ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))
181 nfmpt1 4780 . . . . . . . . . . . . . . 15 𝑥(𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))
182181nfrn 5400 . . . . . . . . . . . . . 14 𝑥ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))
183 nfv 1883 . . . . . . . . . . . . . 14 𝑥 𝑟 = (𝑣 + 𝑢)
184182, 183nfrex 3036 . . . . . . . . . . . . 13 𝑥𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)
185180, 184nfrex 3036 . . . . . . . . . . . 12 𝑥𝑣 ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦))∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (𝑣 + 𝑢)
186 inss2 3867 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝐴) ⊆ 𝐴
187186sseli 3632 . . . . . . . . . . . . . . . . . . . 20 (𝑦 ∈ (𝑥𝐴) → 𝑦𝐴)
188187adantl 481 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑦 ∈ (𝑥𝐴)) → 𝑦𝐴)
189117eqcomd 2657 . . . . . . . . . . . . . . . . . . 19 (𝑦𝐴 → (𝐹𝑦) = ((𝐹𝐴)‘𝑦))
190188, 189syl 17 . . . . . . . . . . . . . . . . . 18 ((𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑦 ∈ (𝑥𝐴)) → (𝐹𝑦) = ((𝐹𝐴)‘𝑦))
191190sumeq2dv 14477 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦))
192 sumeq1 14463 . . . . . . . . . . . . . . . . . . 19 (𝑥 = 𝑧 → Σ𝑦𝑥 ((𝐹𝐴)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
193192cbvmptv 4783 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)) = (𝑧 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
194 vex 3234 . . . . . . . . . . . . . . . . . . . . . . . 24 𝑥 ∈ V
195194inex1 4832 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥𝐴) ∈ V
196195elpw 4197 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑥𝐴) ∈ 𝒫 𝐴 ↔ (𝑥𝐴) ⊆ 𝐴)
197186, 196mpbir 221 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝐴) ∈ 𝒫 𝐴
198197a1i 11 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ∈ 𝒫 𝐴)
199 elinel2 3833 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥 ∈ Fin)
200 inss1 3866 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝐴) ⊆ 𝑥
201200a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ⊆ 𝑥)
202 ssfi 8221 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥 ∈ Fin ∧ (𝑥𝐴) ⊆ 𝑥) → (𝑥𝐴) ∈ Fin)
203199, 201, 202syl2anc 694 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ∈ Fin)
204198, 203elind 3831 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐴) ∈ (𝒫 𝐴 ∩ Fin))
205 eqidd 2652 . . . . . . . . . . . . . . . . . . 19 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦))
206 sumeq1 14463 . . . . . . . . . . . . . . . . . . . . 21 (𝑧 = (𝑥𝐴) → Σ𝑦𝑧 ((𝐹𝐴)‘𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦))
207206eqeq2d 2661 . . . . . . . . . . . . . . . . . . . 20 (𝑧 = (𝑥𝐴) → (Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐴)‘𝑦) ↔ Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦)))
208207rspcev 3340 . . . . . . . . . . . . . . . . . . 19 (((𝑥𝐴) ∈ (𝒫 𝐴 ∩ Fin) ∧ Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦)) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
209204, 205, 208syl2anc 694 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → ∃𝑧 ∈ (𝒫 𝐴 ∩ Fin)Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐴)‘𝑦))
210 sumex 14462 . . . . . . . . . . . . . . . . . . 19 Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) ∈ V
211210a1i 11 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) ∈ V)
212193, 209, 211elrnmptd 39680 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)((𝐹𝐴)‘𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)))
213191, 212eqeltrd 2730 . . . . . . . . . . . . . . . 16 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)))
2142133ad2ant2 1103 . . . . . . . . . . . . . . 15 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐴 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐴)‘𝑦)))
215 sumeq1 14463 . . . . . . . . . . . . . . . . . 18 (𝑥 = 𝑧 → Σ𝑦𝑥 ((𝐹𝐵)‘𝑦) = Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
216215cbvmptv 4783 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)) = (𝑧 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
217 inss2 3867 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝐵) ⊆ 𝐵
218194inex1 4832 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝐵) ∈ V
219218elpw 4197 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥𝐵) ∈ 𝒫 𝐵 ↔ (𝑥𝐵) ⊆ 𝐵)
220217, 219mpbir 221 . . . . . . . . . . . . . . . . . . . 20 (𝑥𝐵) ∈ 𝒫 𝐵
221220a1i 11 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → (𝑥𝐵) ∈ 𝒫 𝐵)
222 inss1 3866 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝐵) ⊆ 𝑥
223222a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐵) ⊆ 𝑥)
224 ssfi 8221 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥 ∈ Fin ∧ (𝑥𝐵) ⊆ 𝑥) → (𝑥𝐵) ∈ Fin)
225199, 223, 224syl2anc 694 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → (𝑥𝐵) ∈ Fin)
2262253ad2ant2 1103 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → (𝑥𝐵) ∈ Fin)
227221, 226elind 3831 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → (𝑥𝐵) ∈ (𝒫 𝐵 ∩ Fin))
228217sseli 3632 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦 ∈ (𝑥𝐵) → 𝑦𝐵)
229123eqcomd 2657 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦𝐵 → (𝐹𝑦) = ((𝐹𝐵)‘𝑦))
230228, 229syl 17 . . . . . . . . . . . . . . . . . . . . 21 (𝑦 ∈ (𝑥𝐵) → (𝐹𝑦) = ((𝐹𝐵)‘𝑦))
231230sumeq2i 14473 . . . . . . . . . . . . . . . . . . . 20 Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦)
232231a1i 11 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦))
2332323adant3 1101 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦))
234 sumeq1 14463 . . . . . . . . . . . . . . . . . . . 20 (𝑧 = (𝑥𝐵) → Σ𝑦𝑧 ((𝐹𝐵)‘𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦))
235234eqeq2d 2661 . . . . . . . . . . . . . . . . . . 19 (𝑧 = (𝑥𝐵) → (Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦𝑧 ((𝐹𝐵)‘𝑦) ↔ Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦)))
236235rspcev 3340 . . . . . . . . . . . . . . . . . 18 (((𝑥𝐵) ∈ (𝒫 𝐵 ∩ Fin) ∧ Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦 ∈ (𝑥𝐵)((𝐹𝐵)‘𝑦)) → ∃𝑧 ∈ (𝒫 𝐵 ∩ Fin)Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
237227, 233, 236syl2anc 694 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → ∃𝑧 ∈ (𝒫 𝐵 ∩ Fin)Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) = Σ𝑦𝑧 ((𝐹𝐵)‘𝑦))
238 sumex 14462 . . . . . . . . . . . . . . . . . 18 Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) ∈ V
239238a1i 11 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) ∈ V)
240216, 237, 239elrnmptd 39680 . . . . . . . . . . . . . . . 16 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦)))
241 simp3 1083 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → 𝑟 = Σ𝑦𝑥 (𝐹𝑦))
242186a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝜑 → (𝑥𝐴) ⊆ 𝐴)
243217a1i 11 . . . . . . . . . . . . . . . . . . . . 21 (𝜑 → (𝑥𝐵) ⊆ 𝐵)
244 ssin0 39537 . . . . . . . . . . . . . . . . . . . . 21 (((𝐴𝐵) = ∅ ∧ (𝑥𝐴) ⊆ 𝐴 ∧ (𝑥𝐵) ⊆ 𝐵) → ((𝑥𝐴) ∩ (𝑥𝐵)) = ∅)
245132, 242, 243, 244syl3anc 1366 . . . . . . . . . . . . . . . . . . . 20 (𝜑 → ((𝑥𝐴) ∩ (𝑥𝐵)) = ∅)
246245adantr 480 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → ((𝑥𝐴) ∩ (𝑥𝐵)) = ∅)
247 elinel1 3832 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥 ∈ 𝒫 𝑈)
248 elpwi 4201 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥 ∈ 𝒫 𝑈𝑥𝑈)
249247, 248syl 17 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥𝑈)
2504ineq2i 3844 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥𝑈) = (𝑥 ∩ (𝐴𝐵))
251250a1i 11 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝑈 → (𝑥𝑈) = (𝑥 ∩ (𝐴𝐵)))
252 dfss 3622 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑥𝑈𝑥 = (𝑥𝑈))
253252biimpi 206 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝑈𝑥 = (𝑥𝑈))
254 indi 3906 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑥 ∩ (𝐴𝐵)) = ((𝑥𝐴) ∪ (𝑥𝐵))
255254eqcomi 2660 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑥𝐴) ∪ (𝑥𝐵)) = (𝑥 ∩ (𝐴𝐵))
256255a1i 11 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝑈 → ((𝑥𝐴) ∪ (𝑥𝐵)) = (𝑥 ∩ (𝐴𝐵)))
257251, 253, 2563eqtr4d 2695 . . . . . . . . . . . . . . . . . . . . 21 (𝑥𝑈𝑥 = ((𝑥𝐴) ∪ (𝑥𝐵)))
258249, 257syl 17 . . . . . . . . . . . . . . . . . . . 20 (𝑥 ∈ (𝒫 𝑈 ∩ Fin) → 𝑥 = ((𝑥𝐴) ∪ (𝑥𝐵)))
259258adantl 481 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → 𝑥 = ((𝑥𝐴) ∪ (𝑥𝐵)))
260199adantl 481 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → 𝑥 ∈ Fin)
261144ad2antrr 762 . . . . . . . . . . . . . . . . . . . . 21 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → 𝐹:𝑈⟶(0[,)+∞))
262249sselda 3636 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑦𝑥) → 𝑦𝑈)
263262adantll 750 . . . . . . . . . . . . . . . . . . . . 21 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → 𝑦𝑈)
264261, 263ffvelrnd 6400 . . . . . . . . . . . . . . . . . . . 20 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → (𝐹𝑦) ∈ (0[,)+∞))
265143, 264sseldi 3634 . . . . . . . . . . . . . . . . . . 19 (((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) ∧ 𝑦𝑥) → (𝐹𝑦) ∈ ℂ)
266246, 259, 260, 265fsumsplit 14515 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin)) → Σ𝑦𝑥 (𝐹𝑦) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
2672663adant3 1101 . . . . . . . . . . . . . . . . 17 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → Σ𝑦𝑥 (𝐹𝑦) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
268241, 267eqtrd 2685 . . . . . . . . . . . . . . . 16 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → 𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
269 oveq2 6698 . . . . . . . . . . . . . . . . . 18 (𝑢 = Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) → (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦)))
270269eqeq2d 2661 . . . . . . . . . . . . . . . . 17 (𝑢 = Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦) → (𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢) ↔ 𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + Σ𝑦 ∈ (𝑥𝐵)(𝐹𝑦))))
271270rspcev 3340 . . . . . . . . . . . . . . . 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))
272240, 268, 271syl2anc 694 . . . . . . . . . . . . . . 15 ((𝜑𝑥 ∈ (𝒫 𝑈 ∩ Fin) ∧ 𝑟 = Σ𝑦𝑥 (𝐹𝑦)) → ∃𝑢 ∈ ran (𝑥 ∈ (𝒫 𝐵 ∩ Fin) ↦ Σ𝑦𝑥 ((𝐹𝐵)‘𝑦))𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢))
273 oveq1 6697 . . . . . . . . . . . . . . . . . 18 (𝑣 = Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) → (𝑣 + 𝑢) = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢))
274273eqeq2d 2661 . . . . . . . . . . . . . . . . 17 (𝑣 = Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) → (𝑟 = (𝑣 + 𝑢) ↔ 𝑟 = (Σ𝑦 ∈ (𝑥𝐴)(𝐹𝑦) + 𝑢)))
275274rexbidv 3081 . . . . . . . . . . . . . . . 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)))
276275rspcev 3340 . . . . . . . . . . . . . . 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))
277214, 272, 276syl2anc 694 . . . . . . . . . . . . . 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))
2782773exp 1283 . . . . . . . . . . . . 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))))
279278adantr 480 . . . . . . . . . . . 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))))
280178, 185, 279rexlimd 3055 . . . . . . . . . . 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)))
281172, 280mpd 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))
282281, 59sylibr 224 . . . . . . . . 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)})
283282ex 449 . . . . . . . 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)}))
284169, 283impbid 202 . . . . . . 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))))
285284alrimiv 1895 . . . . . 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))))
286 dfcleq 2645 . . . . . 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))))
287285, 286sylibr 224 . . . . 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)))
288287supeq1d 8393 . . . 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, < ))
28926, 53, 2883eqtrrd 2690 . . 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, < )))
29013, 2, 14sge0supre 40924 . . 3 (𝜑 → (Σ^𝐹) = sup(ran (𝑥 ∈ (𝒫 𝑈 ∩ Fin) ↦ Σ𝑦𝑥 (𝐹𝑦)), ℝ, < ))
29116, 23oveq12d 6708 . . 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, < )))
292289, 290, 2913eqtr4d 2695 . 2 (𝜑 → (Σ^𝐹) = ((Σ^‘(𝐹𝐴)) +𝑒^‘(𝐹𝐵))))
293 rexadd 12101 . . 3 (((Σ^‘(𝐹𝐴)) ∈ ℝ ∧ (Σ^‘(𝐹𝐵)) ∈ ℝ) → ((Σ^‘(𝐹𝐴)) +𝑒^‘(𝐹𝐵))) = ((Σ^‘(𝐹𝐴)) + (Σ^‘(𝐹𝐵))))
29415, 22, 293syl2anc 694 . 2 (𝜑 → ((Σ^‘(𝐹𝐴)) +𝑒^‘(𝐹𝐵))) = ((Σ^‘(𝐹𝐴)) + (Σ^‘(𝐹𝐵))))
295292, 294eqtrd 2685 1 (𝜑 → (Σ^𝐹) = ((Σ^‘(𝐹𝐴)) + (Σ^‘(𝐹𝐵))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 383  w3a 1054  wal 1521   = wceq 1523  wcel 2030  {cab 2637  wne 2823  wral 2941  wrex 2942  Vcvv 3231  cun 3605  cin 3606  wss 3607  c0 3948  𝒫 cpw 4191   class class class wbr 4685  cmpt 4762  ran crn 5144  cres 5145  wf 5922  cfv 5926  (class class class)co 6690  Fincfn 7997  supcsup 8387  cc 9972  cr 9973  0cc0 9974   + caddc 9977  +∞cpnf 10109  *cxr 10111   < clt 10112  cle 10113   +𝑒 cxad 11982  [,)cico 12215  [,]cicc 12216  Σcsu 14460  Σ^csumge0 40897
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991  ax-inf2 8576  ax-cnex 10030  ax-resscn 10031  ax-1cn 10032  ax-icn 10033  ax-addcl 10034  ax-addrcl 10035  ax-mulcl 10036  ax-mulrcl 10037  ax-mulcom 10038  ax-addass 10039  ax-mulass 10040  ax-distr 10041  ax-i2m1 10042  ax-1ne0 10043  ax-1rid 10044  ax-rnegex 10045  ax-rrecex 10046  ax-cnre 10047  ax-pre-lttri 10048  ax-pre-lttrn 10049  ax-pre-ltadd 10050  ax-pre-mulgt0 10051  ax-pre-sup 10052
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-fal 1529  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-nel 2927  df-ral 2946  df-rex 2947  df-reu 2948  df-rmo 2949  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-uni 4469  df-int 4508  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-se 5103  df-we 5104  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-pred 5718  df-ord 5764  df-on 5765  df-lim 5766  df-suc 5767  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-isom 5935  df-riota 6651  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-om 7108  df-1st 7210  df-2nd 7211  df-wrecs 7452  df-recs 7513  df-rdg 7551  df-1o 7605  df-oadd 7609  df-er 7787  df-en 7998  df-dom 7999  df-sdom 8000  df-fin 8001  df-sup 8389  df-oi 8456  df-card 8803  df-pnf 10114  df-mnf 10115  df-xr 10116  df-ltxr 10117  df-le 10118  df-sub 10306  df-neg 10307  df-div 10723  df-nn 11059  df-2 11117  df-3 11118  df-n0 11331  df-z 11416  df-uz 11726  df-rp 11871  df-xadd 11985  df-ico 12219  df-icc 12220  df-fz 12365  df-fzo 12505  df-seq 12842  df-exp 12901  df-hash 13158  df-cj 13883  df-re 13884  df-im 13885  df-sqrt 14019  df-abs 14020  df-clim 14263  df-sum 14461  df-sumge0 40898
This theorem is referenced by:  sge0split  40944
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