Step | Hyp | Ref
| Expression |
1 | | itg2add.f1 |
. . 3
⊢ (𝜑 → 𝐹 ∈ MblFn) |
2 | | itg2add.f2 |
. . 3
⊢ (𝜑 → 𝐹:ℝ⟶(0[,)+∞)) |
3 | 1, 2 | mbfi1fseq 24886 |
. 2
⊢ (𝜑 → ∃𝑓(𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥))) |
4 | | itg2add.g1 |
. . 3
⊢ (𝜑 → 𝐺 ∈ MblFn) |
5 | | itg2add.g2 |
. . 3
⊢ (𝜑 → 𝐺:ℝ⟶(0[,)+∞)) |
6 | 4, 5 | mbfi1fseq 24886 |
. 2
⊢ (𝜑 → ∃𝑔(𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥))) |
7 | | exdistrv 1959 |
. . 3
⊢
(∃𝑓∃𝑔((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥))) ↔ (∃𝑓(𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ ∃𝑔(𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) |
8 | 1 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → 𝐹 ∈ MblFn) |
9 | 2 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → 𝐹:ℝ⟶(0[,)+∞)) |
10 | | itg2add.f3 |
. . . . . . 7
⊢ (𝜑 →
(∫2‘𝐹)
∈ ℝ) |
11 | 10 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → (∫2‘𝐹) ∈
ℝ) |
12 | 4 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → 𝐺 ∈ MblFn) |
13 | 5 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → 𝐺:ℝ⟶(0[,)+∞)) |
14 | | itg2add.g3 |
. . . . . . 7
⊢ (𝜑 →
(∫2‘𝐺)
∈ ℝ) |
15 | 14 | adantr 481 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → (∫2‘𝐺) ∈
ℝ) |
16 | | simprl1 1217 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → 𝑓:ℕ⟶dom
∫1) |
17 | | simprl2 1218 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → ∀𝑛 ∈ ℕ (0𝑝
∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1)))) |
18 | | simprl3 1219 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) |
19 | | simprr1 1220 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → 𝑔:ℕ⟶dom
∫1) |
20 | | simprr2 1221 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → ∀𝑛 ∈ ℕ (0𝑝
∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1)))) |
21 | | simprr3 1222 |
. . . . . 6
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)) |
22 | 8, 9, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21 | itg2addlem 24923 |
. . . . 5
⊢ ((𝜑 ∧ ((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥)))) → (∫2‘(𝐹 ∘f + 𝐺)) =
((∫2‘𝐹) + (∫2‘𝐺))) |
23 | 22 | ex 413 |
. . . 4
⊢ (𝜑 → (((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥))) → (∫2‘(𝐹 ∘f + 𝐺)) =
((∫2‘𝐹) + (∫2‘𝐺)))) |
24 | 23 | exlimdvv 1937 |
. . 3
⊢ (𝜑 → (∃𝑓∃𝑔((𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ (𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥))) → (∫2‘(𝐹 ∘f + 𝐺)) =
((∫2‘𝐹) + (∫2‘𝐺)))) |
25 | 7, 24 | syl5bir 242 |
. 2
⊢ (𝜑 → ((∃𝑓(𝑓:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑓‘𝑛) ∧ (𝑓‘𝑛) ∘r ≤ (𝑓‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑓‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥)) ∧ ∃𝑔(𝑔:ℕ⟶dom ∫1 ∧
∀𝑛 ∈ ℕ
(0𝑝 ∘r ≤ (𝑔‘𝑛) ∧ (𝑔‘𝑛) ∘r ≤ (𝑔‘(𝑛 + 1))) ∧ ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑔‘𝑛)‘𝑥)) ⇝ (𝐺‘𝑥))) → (∫2‘(𝐹 ∘f + 𝐺)) =
((∫2‘𝐹) + (∫2‘𝐺)))) |
26 | 3, 6, 25 | mp2and 696 |
1
⊢ (𝜑 →
(∫2‘(𝐹
∘f + 𝐺)) =
((∫2‘𝐹) + (∫2‘𝐺))) |