Step | Hyp | Ref
| Expression |
1 | | mbfadd.1 |
. . . . 5
⊢ (𝜑 → 𝐹 ∈ MblFn) |
2 | | mbff 24694 |
. . . . 5
⊢ (𝐹 ∈ MblFn → 𝐹:dom 𝐹⟶ℂ) |
3 | 1, 2 | syl 17 |
. . . 4
⊢ (𝜑 → 𝐹:dom 𝐹⟶ℂ) |
4 | 3 | ffnd 6585 |
. . 3
⊢ (𝜑 → 𝐹 Fn dom 𝐹) |
5 | | mbfadd.2 |
. . . . 5
⊢ (𝜑 → 𝐺 ∈ MblFn) |
6 | | mbff 24694 |
. . . . 5
⊢ (𝐺 ∈ MblFn → 𝐺:dom 𝐺⟶ℂ) |
7 | 5, 6 | syl 17 |
. . . 4
⊢ (𝜑 → 𝐺:dom 𝐺⟶ℂ) |
8 | 7 | ffnd 6585 |
. . 3
⊢ (𝜑 → 𝐺 Fn dom 𝐺) |
9 | | mbfdm 24695 |
. . . 4
⊢ (𝐹 ∈ MblFn → dom 𝐹 ∈ dom
vol) |
10 | 1, 9 | syl 17 |
. . 3
⊢ (𝜑 → dom 𝐹 ∈ dom vol) |
11 | | mbfdm 24695 |
. . . 4
⊢ (𝐺 ∈ MblFn → dom 𝐺 ∈ dom
vol) |
12 | 5, 11 | syl 17 |
. . 3
⊢ (𝜑 → dom 𝐺 ∈ dom vol) |
13 | | eqid 2738 |
. . 3
⊢ (dom
𝐹 ∩ dom 𝐺) = (dom 𝐹 ∩ dom 𝐺) |
14 | | eqidd 2739 |
. . 3
⊢ ((𝜑 ∧ 𝑥 ∈ dom 𝐹) → (𝐹‘𝑥) = (𝐹‘𝑥)) |
15 | | eqidd 2739 |
. . 3
⊢ ((𝜑 ∧ 𝑥 ∈ dom 𝐺) → (𝐺‘𝑥) = (𝐺‘𝑥)) |
16 | 4, 8, 10, 12, 13, 14, 15 | offval 7520 |
. 2
⊢ (𝜑 → (𝐹 ∘f + 𝐺) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((𝐹‘𝑥) + (𝐺‘𝑥)))) |
17 | | elinel1 4125 |
. . . . . . . 8
⊢ (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) → 𝑥 ∈ dom 𝐹) |
18 | | ffvelrn 6941 |
. . . . . . . 8
⊢ ((𝐹:dom 𝐹⟶ℂ ∧ 𝑥 ∈ dom 𝐹) → (𝐹‘𝑥) ∈ ℂ) |
19 | 3, 17, 18 | syl2an 595 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (𝐹‘𝑥) ∈ ℂ) |
20 | | elinel2 4126 |
. . . . . . . 8
⊢ (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) → 𝑥 ∈ dom 𝐺) |
21 | | ffvelrn 6941 |
. . . . . . . 8
⊢ ((𝐺:dom 𝐺⟶ℂ ∧ 𝑥 ∈ dom 𝐺) → (𝐺‘𝑥) ∈ ℂ) |
22 | 7, 20, 21 | syl2an 595 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (𝐺‘𝑥) ∈ ℂ) |
23 | 19, 22 | readdd 14853 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (ℜ‘((𝐹‘𝑥) + (𝐺‘𝑥))) = ((ℜ‘(𝐹‘𝑥)) + (ℜ‘(𝐺‘𝑥)))) |
24 | 23 | mpteq2dva 5170 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((ℜ‘(𝐹‘𝑥)) + (ℜ‘(𝐺‘𝑥))))) |
25 | | inmbl 24611 |
. . . . . . 7
⊢ ((dom
𝐹 ∈ dom vol ∧ dom
𝐺 ∈ dom vol) →
(dom 𝐹 ∩ dom 𝐺) ∈ dom
vol) |
26 | 10, 12, 25 | syl2anc 583 |
. . . . . 6
⊢ (𝜑 → (dom 𝐹 ∩ dom 𝐺) ∈ dom vol) |
27 | 19 | recld 14833 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (ℜ‘(𝐹‘𝑥)) ∈ ℝ) |
28 | 22 | recld 14833 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (ℜ‘(𝐺‘𝑥)) ∈ ℝ) |
29 | | eqidd 2739 |
. . . . . 6
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥)))) |
30 | | eqidd 2739 |
. . . . . 6
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥)))) |
31 | 26, 27, 28, 29, 30 | offval2 7531 |
. . . . 5
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))) ∘f + (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥)))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((ℜ‘(𝐹‘𝑥)) + (ℜ‘(𝐺‘𝑥))))) |
32 | 24, 31 | eqtr4d 2781 |
. . . 4
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) = ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))) ∘f + (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥))))) |
33 | | inss1 4159 |
. . . . . . . . 9
⊢ (dom
𝐹 ∩ dom 𝐺) ⊆ dom 𝐹 |
34 | | resmpt 5934 |
. . . . . . . . 9
⊢ ((dom
𝐹 ∩ dom 𝐺) ⊆ dom 𝐹 → ((𝑥 ∈ dom 𝐹 ↦ (𝐹‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐹‘𝑥))) |
35 | 33, 34 | ax-mp 5 |
. . . . . . . 8
⊢ ((𝑥 ∈ dom 𝐹 ↦ (𝐹‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐹‘𝑥)) |
36 | 3 | feqmptd 6819 |
. . . . . . . . . 10
⊢ (𝜑 → 𝐹 = (𝑥 ∈ dom 𝐹 ↦ (𝐹‘𝑥))) |
37 | 36, 1 | eqeltrrd 2840 |
. . . . . . . . 9
⊢ (𝜑 → (𝑥 ∈ dom 𝐹 ↦ (𝐹‘𝑥)) ∈ MblFn) |
38 | | mbfres 24713 |
. . . . . . . . 9
⊢ (((𝑥 ∈ dom 𝐹 ↦ (𝐹‘𝑥)) ∈ MblFn ∧ (dom 𝐹 ∩ dom 𝐺) ∈ dom vol) → ((𝑥 ∈ dom 𝐹 ↦ (𝐹‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) ∈ MblFn) |
39 | 37, 26, 38 | syl2anc 583 |
. . . . . . . 8
⊢ (𝜑 → ((𝑥 ∈ dom 𝐹 ↦ (𝐹‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) ∈ MblFn) |
40 | 35, 39 | eqeltrrid 2844 |
. . . . . . 7
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐹‘𝑥)) ∈ MblFn) |
41 | 19 | ismbfcn2 24707 |
. . . . . . 7
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐹‘𝑥)) ∈ MblFn ↔ ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))) ∈ MblFn ∧ (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))) ∈ MblFn))) |
42 | 40, 41 | mpbid 231 |
. . . . . 6
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))) ∈ MblFn ∧ (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))) ∈ MblFn)) |
43 | 42 | simpld 494 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))) ∈ MblFn) |
44 | | inss2 4160 |
. . . . . . . . 9
⊢ (dom
𝐹 ∩ dom 𝐺) ⊆ dom 𝐺 |
45 | | resmpt 5934 |
. . . . . . . . 9
⊢ ((dom
𝐹 ∩ dom 𝐺) ⊆ dom 𝐺 → ((𝑥 ∈ dom 𝐺 ↦ (𝐺‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐺‘𝑥))) |
46 | 44, 45 | ax-mp 5 |
. . . . . . . 8
⊢ ((𝑥 ∈ dom 𝐺 ↦ (𝐺‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐺‘𝑥)) |
47 | 7 | feqmptd 6819 |
. . . . . . . . . 10
⊢ (𝜑 → 𝐺 = (𝑥 ∈ dom 𝐺 ↦ (𝐺‘𝑥))) |
48 | 47, 5 | eqeltrrd 2840 |
. . . . . . . . 9
⊢ (𝜑 → (𝑥 ∈ dom 𝐺 ↦ (𝐺‘𝑥)) ∈ MblFn) |
49 | | mbfres 24713 |
. . . . . . . . 9
⊢ (((𝑥 ∈ dom 𝐺 ↦ (𝐺‘𝑥)) ∈ MblFn ∧ (dom 𝐹 ∩ dom 𝐺) ∈ dom vol) → ((𝑥 ∈ dom 𝐺 ↦ (𝐺‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) ∈ MblFn) |
50 | 48, 26, 49 | syl2anc 583 |
. . . . . . . 8
⊢ (𝜑 → ((𝑥 ∈ dom 𝐺 ↦ (𝐺‘𝑥)) ↾ (dom 𝐹 ∩ dom 𝐺)) ∈ MblFn) |
51 | 46, 50 | eqeltrrid 2844 |
. . . . . . 7
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐺‘𝑥)) ∈ MblFn) |
52 | 22 | ismbfcn2 24707 |
. . . . . . 7
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (𝐺‘𝑥)) ∈ MblFn ↔ ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥))) ∈ MblFn ∧ (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥))) ∈ MblFn))) |
53 | 51, 52 | mpbid 231 |
. . . . . 6
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥))) ∈ MblFn ∧ (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥))) ∈ MblFn)) |
54 | 53 | simpld 494 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥))) ∈ MblFn) |
55 | 27 | fmpttd 6971 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))):(dom 𝐹 ∩ dom 𝐺)⟶ℝ) |
56 | 28 | fmpttd 6971 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥))):(dom 𝐹 ∩ dom 𝐺)⟶ℝ) |
57 | 43, 54, 55, 56 | mbfaddlem 24729 |
. . . 4
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐹‘𝑥))) ∘f + (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘(𝐺‘𝑥)))) ∈ MblFn) |
58 | 32, 57 | eqeltrd 2839 |
. . 3
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) ∈ MblFn) |
59 | 19, 22 | imaddd 14854 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (ℑ‘((𝐹‘𝑥) + (𝐺‘𝑥))) = ((ℑ‘(𝐹‘𝑥)) + (ℑ‘(𝐺‘𝑥)))) |
60 | 59 | mpteq2dva 5170 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((ℑ‘(𝐹‘𝑥)) + (ℑ‘(𝐺‘𝑥))))) |
61 | 19 | imcld 14834 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (ℑ‘(𝐹‘𝑥)) ∈ ℝ) |
62 | 22 | imcld 14834 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → (ℑ‘(𝐺‘𝑥)) ∈ ℝ) |
63 | | eqidd 2739 |
. . . . . 6
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥)))) |
64 | | eqidd 2739 |
. . . . . 6
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥)))) |
65 | 26, 61, 62, 63, 64 | offval2 7531 |
. . . . 5
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))) ∘f + (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥)))) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((ℑ‘(𝐹‘𝑥)) + (ℑ‘(𝐺‘𝑥))))) |
66 | 60, 65 | eqtr4d 2781 |
. . . 4
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) = ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))) ∘f + (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥))))) |
67 | 42 | simprd 495 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))) ∈ MblFn) |
68 | 53 | simprd 495 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥))) ∈ MblFn) |
69 | 61 | fmpttd 6971 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))):(dom 𝐹 ∩ dom 𝐺)⟶ℝ) |
70 | 62 | fmpttd 6971 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥))):(dom 𝐹 ∩ dom 𝐺)⟶ℝ) |
71 | 67, 68, 69, 70 | mbfaddlem 24729 |
. . . 4
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐹‘𝑥))) ∘f + (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘(𝐺‘𝑥)))) ∈ MblFn) |
72 | 66, 71 | eqeltrd 2839 |
. . 3
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) ∈ MblFn) |
73 | 19, 22 | addcld 10925 |
. . . 4
⊢ ((𝜑 ∧ 𝑥 ∈ (dom 𝐹 ∩ dom 𝐺)) → ((𝐹‘𝑥) + (𝐺‘𝑥)) ∈ ℂ) |
74 | 73 | ismbfcn2 24707 |
. . 3
⊢ (𝜑 → ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((𝐹‘𝑥) + (𝐺‘𝑥))) ∈ MblFn ↔ ((𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℜ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) ∈ MblFn ∧ (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ (ℑ‘((𝐹‘𝑥) + (𝐺‘𝑥)))) ∈ MblFn))) |
75 | 58, 72, 74 | mpbir2and 709 |
. 2
⊢ (𝜑 → (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((𝐹‘𝑥) + (𝐺‘𝑥))) ∈ MblFn) |
76 | 16, 75 | eqeltrd 2839 |
1
⊢ (𝜑 → (𝐹 ∘f + 𝐺) ∈ MblFn) |