| Step | Hyp | Ref
| Expression |
| 1 | | i1ff 23249 |
. . . . . . . 8
⊢ (𝐹 ∈ dom ∫1
→ 𝐹:ℝ⟶ℝ) |
| 2 | 1 | ffvelrnda 6267 |
. . . . . . 7
⊢ ((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ (𝐹‘𝑥) ∈
ℝ) |
| 3 | | i1ff 23249 |
. . . . . . . 8
⊢ (𝐺 ∈ dom ∫1
→ 𝐺:ℝ⟶ℝ) |
| 4 | 3 | ffvelrnda 6267 |
. . . . . . 7
⊢ ((𝐺 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ (𝐺‘𝑥) ∈
ℝ) |
| 5 | | absreim 13881 |
. . . . . . 7
⊢ (((𝐹‘𝑥) ∈ ℝ ∧ (𝐺‘𝑥) ∈ ℝ) → (abs‘((𝐹‘𝑥) + (i · (𝐺‘𝑥)))) = (√‘(((𝐹‘𝑥)↑2) + ((𝐺‘𝑥)↑2)))) |
| 6 | 2, 4, 5 | syl2an 493 |
. . . . . 6
⊢ (((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
∧ (𝐺 ∈ dom
∫1 ∧ 𝑥
∈ ℝ)) → (abs‘((𝐹‘𝑥) + (i · (𝐺‘𝑥)))) = (√‘(((𝐹‘𝑥)↑2) + ((𝐺‘𝑥)↑2)))) |
| 7 | 6 | anandirs 870 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → (abs‘((𝐹‘𝑥) + (i · (𝐺‘𝑥)))) = (√‘(((𝐹‘𝑥)↑2) + ((𝐺‘𝑥)↑2)))) |
| 8 | 2 | recnd 9947 |
. . . . . . . . 9
⊢ ((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ (𝐹‘𝑥) ∈
ℂ) |
| 9 | 8 | sqvald 12867 |
. . . . . . . 8
⊢ ((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ ((𝐹‘𝑥)↑2) = ((𝐹‘𝑥) · (𝐹‘𝑥))) |
| 10 | 4 | recnd 9947 |
. . . . . . . . 9
⊢ ((𝐺 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ (𝐺‘𝑥) ∈
ℂ) |
| 11 | 10 | sqvald 12867 |
. . . . . . . 8
⊢ ((𝐺 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ ((𝐺‘𝑥)↑2) = ((𝐺‘𝑥) · (𝐺‘𝑥))) |
| 12 | 9, 11 | oveqan12d 6568 |
. . . . . . 7
⊢ (((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
∧ (𝐺 ∈ dom
∫1 ∧ 𝑥
∈ ℝ)) → (((𝐹‘𝑥)↑2) + ((𝐺‘𝑥)↑2)) = (((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥)))) |
| 13 | 12 | anandirs 870 |
. . . . . 6
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → (((𝐹‘𝑥)↑2) + ((𝐺‘𝑥)↑2)) = (((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥)))) |
| 14 | 13 | fveq2d 6107 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → (√‘(((𝐹‘𝑥)↑2) + ((𝐺‘𝑥)↑2))) = (√‘(((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))))) |
| 15 | 7, 14 | eqtrd 2644 |
. . . 4
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → (abs‘((𝐹‘𝑥) + (i · (𝐺‘𝑥)))) = (√‘(((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))))) |
| 16 | 15 | mpteq2dva 4672 |
. . 3
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝑥 ∈ ℝ ↦ (abs‘((𝐹‘𝑥) + (i · (𝐺‘𝑥))))) = (𝑥 ∈ ℝ ↦
(√‘(((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥)))))) |
| 17 | | ax-icn 9874 |
. . . . . . 7
⊢ i ∈
ℂ |
| 18 | | mulcl 9899 |
. . . . . . 7
⊢ ((i
∈ ℂ ∧ (𝐺‘𝑥) ∈ ℂ) → (i · (𝐺‘𝑥)) ∈ ℂ) |
| 19 | 17, 10, 18 | sylancr 694 |
. . . . . 6
⊢ ((𝐺 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ (i · (𝐺‘𝑥)) ∈ ℂ) |
| 20 | | addcl 9897 |
. . . . . 6
⊢ (((𝐹‘𝑥) ∈ ℂ ∧ (i · (𝐺‘𝑥)) ∈ ℂ) → ((𝐹‘𝑥) + (i · (𝐺‘𝑥))) ∈ ℂ) |
| 21 | 8, 19, 20 | syl2an 493 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
∧ (𝐺 ∈ dom
∫1 ∧ 𝑥
∈ ℝ)) → ((𝐹‘𝑥) + (i · (𝐺‘𝑥))) ∈ ℂ) |
| 22 | 21 | anandirs 870 |
. . . 4
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → ((𝐹‘𝑥) + (i · (𝐺‘𝑥))) ∈ ℂ) |
| 23 | | reex 9906 |
. . . . . 6
⊢ ℝ
∈ V |
| 24 | 23 | a1i 11 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ℝ ∈ V) |
| 25 | 2 | adantlr 747 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → (𝐹‘𝑥) ∈ ℝ) |
| 26 | | ovex 6577 |
. . . . . 6
⊢ (i
· (𝐺‘𝑥)) ∈ V |
| 27 | 26 | a1i 11 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → (i · (𝐺‘𝑥)) ∈ V) |
| 28 | 1 | feqmptd 6159 |
. . . . . 6
⊢ (𝐹 ∈ dom ∫1
→ 𝐹 = (𝑥 ∈ ℝ ↦ (𝐹‘𝑥))) |
| 29 | 28 | adantr 480 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → 𝐹
= (𝑥 ∈ ℝ ↦
(𝐹‘𝑥))) |
| 30 | 23 | a1i 11 |
. . . . . . 7
⊢ (𝐺 ∈ dom ∫1
→ ℝ ∈ V) |
| 31 | 17 | a1i 11 |
. . . . . . 7
⊢ ((𝐺 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ i ∈ ℂ) |
| 32 | | fconstmpt 5085 |
. . . . . . . 8
⊢ (ℝ
× {i}) = (𝑥 ∈
ℝ ↦ i) |
| 33 | 32 | a1i 11 |
. . . . . . 7
⊢ (𝐺 ∈ dom ∫1
→ (ℝ × {i}) = (𝑥 ∈ ℝ ↦ i)) |
| 34 | 3 | feqmptd 6159 |
. . . . . . 7
⊢ (𝐺 ∈ dom ∫1
→ 𝐺 = (𝑥 ∈ ℝ ↦ (𝐺‘𝑥))) |
| 35 | 30, 31, 4, 33, 34 | offval2 6812 |
. . . . . 6
⊢ (𝐺 ∈ dom ∫1
→ ((ℝ × {i}) ∘𝑓 · 𝐺) = (𝑥 ∈ ℝ ↦ (i · (𝐺‘𝑥)))) |
| 36 | 35 | adantl 481 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ((ℝ × {i}) ∘𝑓
· 𝐺) = (𝑥 ∈ ℝ ↦ (i
· (𝐺‘𝑥)))) |
| 37 | 24, 25, 27, 29, 36 | offval2 6812 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐹 ∘𝑓 + ((ℝ
× {i}) ∘𝑓 · 𝐺)) = (𝑥 ∈ ℝ ↦ ((𝐹‘𝑥) + (i · (𝐺‘𝑥))))) |
| 38 | | absf 13925 |
. . . . . 6
⊢
abs:ℂ⟶ℝ |
| 39 | 38 | a1i 11 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → abs:ℂ⟶ℝ) |
| 40 | 39 | feqmptd 6159 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → abs = (𝑦 ∈ ℂ ↦ (abs‘𝑦))) |
| 41 | | fveq2 6103 |
. . . 4
⊢ (𝑦 = ((𝐹‘𝑥) + (i · (𝐺‘𝑥))) → (abs‘𝑦) = (abs‘((𝐹‘𝑥) + (i · (𝐺‘𝑥))))) |
| 42 | 22, 37, 40, 41 | fmptco 6303 |
. . 3
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (abs ∘ (𝐹 ∘𝑓 + ((ℝ
× {i}) ∘𝑓 · 𝐺))) = (𝑥 ∈ ℝ ↦ (abs‘((𝐹‘𝑥) + (i · (𝐺‘𝑥)))))) |
| 43 | 8, 8 | mulcld 9939 |
. . . . . 6
⊢ ((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ ((𝐹‘𝑥) · (𝐹‘𝑥)) ∈ ℂ) |
| 44 | 10, 10 | mulcld 9939 |
. . . . . 6
⊢ ((𝐺 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ ((𝐺‘𝑥) · (𝐺‘𝑥)) ∈ ℂ) |
| 45 | | addcl 9897 |
. . . . . 6
⊢ ((((𝐹‘𝑥) · (𝐹‘𝑥)) ∈ ℂ ∧ ((𝐺‘𝑥) · (𝐺‘𝑥)) ∈ ℂ) → (((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))) ∈ ℂ) |
| 46 | 43, 44, 45 | syl2an 493 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
∧ (𝐺 ∈ dom
∫1 ∧ 𝑥
∈ ℝ)) → (((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))) ∈ ℂ) |
| 47 | 46 | anandirs 870 |
. . . 4
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → (((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))) ∈ ℂ) |
| 48 | 43 | adantlr 747 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → ((𝐹‘𝑥) · (𝐹‘𝑥)) ∈ ℂ) |
| 49 | 44 | adantll 746 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ ℝ) → ((𝐺‘𝑥) · (𝐺‘𝑥)) ∈ ℂ) |
| 50 | 23 | a1i 11 |
. . . . . . 7
⊢ (𝐹 ∈ dom ∫1
→ ℝ ∈ V) |
| 51 | 50, 2, 2, 28, 28 | offval2 6812 |
. . . . . 6
⊢ (𝐹 ∈ dom ∫1
→ (𝐹
∘𝑓 · 𝐹) = (𝑥 ∈ ℝ ↦ ((𝐹‘𝑥) · (𝐹‘𝑥)))) |
| 52 | 51 | adantr 480 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐹 ∘𝑓 · 𝐹) = (𝑥 ∈ ℝ ↦ ((𝐹‘𝑥) · (𝐹‘𝑥)))) |
| 53 | 30, 4, 4, 34, 34 | offval2 6812 |
. . . . . 6
⊢ (𝐺 ∈ dom ∫1
→ (𝐺
∘𝑓 · 𝐺) = (𝑥 ∈ ℝ ↦ ((𝐺‘𝑥) · (𝐺‘𝑥)))) |
| 54 | 53 | adantl 481 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐺 ∘𝑓 · 𝐺) = (𝑥 ∈ ℝ ↦ ((𝐺‘𝑥) · (𝐺‘𝑥)))) |
| 55 | 24, 48, 49, 52, 54 | offval2 6812 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) = (𝑥 ∈ ℝ ↦ (((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))))) |
| 56 | | sqrtf 13951 |
. . . . . 6
⊢
√:ℂ⟶ℂ |
| 57 | 56 | a1i 11 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → √:ℂ⟶ℂ) |
| 58 | 57 | feqmptd 6159 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → √ = (𝑦 ∈ ℂ ↦ (√‘𝑦))) |
| 59 | | fveq2 6103 |
. . . 4
⊢ (𝑦 = (((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))) → (√‘𝑦) = (√‘(((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥))))) |
| 60 | 47, 55, 58, 59 | fmptco 6303 |
. . 3
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) = (𝑥 ∈ ℝ ↦
(√‘(((𝐹‘𝑥) · (𝐹‘𝑥)) + ((𝐺‘𝑥) · (𝐺‘𝑥)))))) |
| 61 | 16, 42, 60 | 3eqtr4d 2654 |
. 2
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (abs ∘ (𝐹 ∘𝑓 + ((ℝ
× {i}) ∘𝑓 · 𝐺))) = (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)))) |
| 62 | | elrege0 12149 |
. . . . . . 7
⊢ (𝑥 ∈ (0[,)+∞) ↔
(𝑥 ∈ ℝ ∧ 0
≤ 𝑥)) |
| 63 | | resqrtcl 13842 |
. . . . . . 7
⊢ ((𝑥 ∈ ℝ ∧ 0 ≤
𝑥) →
(√‘𝑥) ∈
ℝ) |
| 64 | 62, 63 | sylbi 206 |
. . . . . 6
⊢ (𝑥 ∈ (0[,)+∞) →
(√‘𝑥) ∈
ℝ) |
| 65 | 64 | adantl 481 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ (0[,)+∞)) → (√‘𝑥) ∈ ℝ) |
| 66 | | id 22 |
. . . . . . . . 9
⊢
(√:ℂ⟶ℂ →
√:ℂ⟶ℂ) |
| 67 | 66 | feqmptd 6159 |
. . . . . . . 8
⊢
(√:ℂ⟶ℂ → √ = (𝑥 ∈ ℂ ↦ (√‘𝑥))) |
| 68 | 56, 67 | ax-mp 5 |
. . . . . . 7
⊢ √ =
(𝑥 ∈ ℂ ↦
(√‘𝑥)) |
| 69 | 68 | reseq1i 5313 |
. . . . . 6
⊢ (√
↾ (0[,)+∞)) = ((𝑥 ∈ ℂ ↦ (√‘𝑥)) ↾
(0[,)+∞)) |
| 70 | | rge0ssre 12151 |
. . . . . . . 8
⊢
(0[,)+∞) ⊆ ℝ |
| 71 | | ax-resscn 9872 |
. . . . . . . 8
⊢ ℝ
⊆ ℂ |
| 72 | 70, 71 | sstri 3577 |
. . . . . . 7
⊢
(0[,)+∞) ⊆ ℂ |
| 73 | | resmpt 5369 |
. . . . . . 7
⊢
((0[,)+∞) ⊆ ℂ → ((𝑥 ∈ ℂ ↦ (√‘𝑥)) ↾ (0[,)+∞)) =
(𝑥 ∈ (0[,)+∞)
↦ (√‘𝑥))) |
| 74 | 72, 73 | ax-mp 5 |
. . . . . 6
⊢ ((𝑥 ∈ ℂ ↦
(√‘𝑥)) ↾
(0[,)+∞)) = (𝑥 ∈
(0[,)+∞) ↦ (√‘𝑥)) |
| 75 | 69, 74 | eqtri 2632 |
. . . . 5
⊢ (√
↾ (0[,)+∞)) = (𝑥 ∈ (0[,)+∞) ↦
(√‘𝑥)) |
| 76 | 65, 75 | fmptd 6292 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (√ ↾
(0[,)+∞)):(0[,)+∞)⟶ℝ) |
| 77 | | ge0addcl 12155 |
. . . . . 6
⊢ ((𝑥 ∈ (0[,)+∞) ∧
𝑦 ∈ (0[,)+∞))
→ (𝑥 + 𝑦) ∈
(0[,)+∞)) |
| 78 | 77 | adantl 481 |
. . . . 5
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ (𝑥
∈ (0[,)+∞) ∧ 𝑦 ∈ (0[,)+∞))) → (𝑥 + 𝑦) ∈ (0[,)+∞)) |
| 79 | | oveq12 6558 |
. . . . . . . . 9
⊢ ((𝑧 = 𝐹 ∧ 𝑧 = 𝐹) → (𝑧 ∘𝑓 · 𝑧) = (𝐹 ∘𝑓 · 𝐹)) |
| 80 | 79 | anidms 675 |
. . . . . . . 8
⊢ (𝑧 = 𝐹 → (𝑧 ∘𝑓 · 𝑧) = (𝐹 ∘𝑓 · 𝐹)) |
| 81 | 80 | feq1d 5943 |
. . . . . . 7
⊢ (𝑧 = 𝐹 → ((𝑧 ∘𝑓 · 𝑧):ℝ⟶(0[,)+∞)
↔ (𝐹
∘𝑓 · 𝐹):ℝ⟶(0[,)+∞))) |
| 82 | | i1ff 23249 |
. . . . . . . . . . . 12
⊢ (𝑧 ∈ dom ∫1
→ 𝑧:ℝ⟶ℝ) |
| 83 | 82 | ffvelrnda 6267 |
. . . . . . . . . . 11
⊢ ((𝑧 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ (𝑧‘𝑥) ∈
ℝ) |
| 84 | 83, 83 | remulcld 9949 |
. . . . . . . . . 10
⊢ ((𝑧 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ ((𝑧‘𝑥) · (𝑧‘𝑥)) ∈ ℝ) |
| 85 | 83 | msqge0d 10475 |
. . . . . . . . . 10
⊢ ((𝑧 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ 0 ≤ ((𝑧‘𝑥) · (𝑧‘𝑥))) |
| 86 | | elrege0 12149 |
. . . . . . . . . 10
⊢ (((𝑧‘𝑥) · (𝑧‘𝑥)) ∈ (0[,)+∞) ↔ (((𝑧‘𝑥) · (𝑧‘𝑥)) ∈ ℝ ∧ 0 ≤ ((𝑧‘𝑥) · (𝑧‘𝑥)))) |
| 87 | 84, 85, 86 | sylanbrc 695 |
. . . . . . . . 9
⊢ ((𝑧 ∈ dom ∫1
∧ 𝑥 ∈ ℝ)
→ ((𝑧‘𝑥) · (𝑧‘𝑥)) ∈ (0[,)+∞)) |
| 88 | | eqid 2610 |
. . . . . . . . 9
⊢ (𝑥 ∈ ℝ ↦ ((𝑧‘𝑥) · (𝑧‘𝑥))) = (𝑥 ∈ ℝ ↦ ((𝑧‘𝑥) · (𝑧‘𝑥))) |
| 89 | 87, 88 | fmptd 6292 |
. . . . . . . 8
⊢ (𝑧 ∈ dom ∫1
→ (𝑥 ∈ ℝ
↦ ((𝑧‘𝑥) · (𝑧‘𝑥))):ℝ⟶(0[,)+∞)) |
| 90 | 23 | a1i 11 |
. . . . . . . . . 10
⊢ (𝑧 ∈ dom ∫1
→ ℝ ∈ V) |
| 91 | 82 | feqmptd 6159 |
. . . . . . . . . 10
⊢ (𝑧 ∈ dom ∫1
→ 𝑧 = (𝑥 ∈ ℝ ↦ (𝑧‘𝑥))) |
| 92 | 90, 83, 83, 91, 91 | offval2 6812 |
. . . . . . . . 9
⊢ (𝑧 ∈ dom ∫1
→ (𝑧
∘𝑓 · 𝑧) = (𝑥 ∈ ℝ ↦ ((𝑧‘𝑥) · (𝑧‘𝑥)))) |
| 93 | 92 | feq1d 5943 |
. . . . . . . 8
⊢ (𝑧 ∈ dom ∫1
→ ((𝑧
∘𝑓 · 𝑧):ℝ⟶(0[,)+∞) ↔ (𝑥 ∈ ℝ ↦ ((𝑧‘𝑥) · (𝑧‘𝑥))):ℝ⟶(0[,)+∞))) |
| 94 | 89, 93 | mpbird 246 |
. . . . . . 7
⊢ (𝑧 ∈ dom ∫1
→ (𝑧
∘𝑓 · 𝑧):ℝ⟶(0[,)+∞)) |
| 95 | 81, 94 | vtoclga 3245 |
. . . . . 6
⊢ (𝐹 ∈ dom ∫1
→ (𝐹
∘𝑓 · 𝐹):ℝ⟶(0[,)+∞)) |
| 96 | 95 | adantr 480 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐹 ∘𝑓 · 𝐹):ℝ⟶(0[,)+∞)) |
| 97 | | oveq12 6558 |
. . . . . . . . 9
⊢ ((𝑧 = 𝐺 ∧ 𝑧 = 𝐺) → (𝑧 ∘𝑓 · 𝑧) = (𝐺 ∘𝑓 · 𝐺)) |
| 98 | 97 | anidms 675 |
. . . . . . . 8
⊢ (𝑧 = 𝐺 → (𝑧 ∘𝑓 · 𝑧) = (𝐺 ∘𝑓 · 𝐺)) |
| 99 | 98 | feq1d 5943 |
. . . . . . 7
⊢ (𝑧 = 𝐺 → ((𝑧 ∘𝑓 · 𝑧):ℝ⟶(0[,)+∞)
↔ (𝐺
∘𝑓 · 𝐺):ℝ⟶(0[,)+∞))) |
| 100 | 99, 94 | vtoclga 3245 |
. . . . . 6
⊢ (𝐺 ∈ dom ∫1
→ (𝐺
∘𝑓 · 𝐺):ℝ⟶(0[,)+∞)) |
| 101 | 100 | adantl 481 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐺 ∘𝑓 · 𝐺):ℝ⟶(0[,)+∞)) |
| 102 | | inidm 3784 |
. . . . 5
⊢ (ℝ
∩ ℝ) = ℝ |
| 103 | 78, 96, 101, 24, 24, 102 | off 6810 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)):ℝ⟶(0[,)+∞)) |
| 104 | | fco2 5972 |
. . . 4
⊢
(((√ ↾ (0[,)+∞)):(0[,)+∞)⟶ℝ ∧
((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺)):ℝ⟶(0[,)+∞)) →
(√ ∘ ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))):ℝ⟶ℝ) |
| 105 | 76, 103, 104 | syl2anc 691 |
. . 3
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))):ℝ⟶ℝ) |
| 106 | | rnco 5558 |
. . . 4
⊢ ran
(√ ∘ ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) = ran
(√ ↾ ran ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) |
| 107 | | ffn 5958 |
. . . . . . . 8
⊢
(√:ℂ⟶ℂ → √ Fn
ℂ) |
| 108 | 56, 107 | ax-mp 5 |
. . . . . . 7
⊢ √
Fn ℂ |
| 109 | | readdcl 9898 |
. . . . . . . . . . 11
⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑥 + 𝑦) ∈ ℝ) |
| 110 | 109 | adantl 481 |
. . . . . . . . . 10
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ (𝑥
∈ ℝ ∧ 𝑦
∈ ℝ)) → (𝑥
+ 𝑦) ∈
ℝ) |
| 111 | | remulcl 9900 |
. . . . . . . . . . . . 13
⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℝ) → (𝑥 · 𝑦) ∈ ℝ) |
| 112 | 111 | adantl 481 |
. . . . . . . . . . . 12
⊢ ((𝐹 ∈ dom ∫1
∧ (𝑥 ∈ ℝ
∧ 𝑦 ∈ ℝ))
→ (𝑥 · 𝑦) ∈
ℝ) |
| 113 | 112, 1, 1, 50, 50, 102 | off 6810 |
. . . . . . . . . . 11
⊢ (𝐹 ∈ dom ∫1
→ (𝐹
∘𝑓 · 𝐹):ℝ⟶ℝ) |
| 114 | 113 | adantr 480 |
. . . . . . . . . 10
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐹 ∘𝑓 · 𝐹):ℝ⟶ℝ) |
| 115 | 111 | adantl 481 |
. . . . . . . . . . . 12
⊢ ((𝐺 ∈ dom ∫1
∧ (𝑥 ∈ ℝ
∧ 𝑦 ∈ ℝ))
→ (𝑥 · 𝑦) ∈
ℝ) |
| 116 | 115, 3, 3, 30, 30, 102 | off 6810 |
. . . . . . . . . . 11
⊢ (𝐺 ∈ dom ∫1
→ (𝐺
∘𝑓 · 𝐺):ℝ⟶ℝ) |
| 117 | 116 | adantl 481 |
. . . . . . . . . 10
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐺 ∘𝑓 · 𝐺):ℝ⟶ℝ) |
| 118 | 110, 114,
117, 24, 24, 102 | off 6810 |
. . . . . . . . 9
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)):ℝ⟶ℝ) |
| 119 | | frn 5966 |
. . . . . . . . 9
⊢ (((𝐹 ∘𝑓
· 𝐹)
∘𝑓 + (𝐺 ∘𝑓 · 𝐺)):ℝ⟶ℝ →
ran ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺)) ⊆
ℝ) |
| 120 | 118, 119 | syl 17 |
. . . . . . . 8
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ⊆ ℝ) |
| 121 | 120, 71 | syl6ss 3580 |
. . . . . . 7
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ⊆ ℂ) |
| 122 | | fnssres 5918 |
. . . . . . 7
⊢ ((√
Fn ℂ ∧ ran ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺)) ⊆
ℂ) → (√ ↾ ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) Fn ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) |
| 123 | 108, 121,
122 | sylancr 694 |
. . . . . 6
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (√ ↾ ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) Fn ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) |
| 124 | | id 22 |
. . . . . . . . . 10
⊢ (𝐹 ∈ dom ∫1
→ 𝐹 ∈ dom
∫1) |
| 125 | 124, 124 | i1fmul 23269 |
. . . . . . . . 9
⊢ (𝐹 ∈ dom ∫1
→ (𝐹
∘𝑓 · 𝐹) ∈ dom
∫1) |
| 126 | 125 | adantr 480 |
. . . . . . . 8
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐹 ∘𝑓 · 𝐹) ∈ dom
∫1) |
| 127 | | id 22 |
. . . . . . . . . 10
⊢ (𝐺 ∈ dom ∫1
→ 𝐺 ∈ dom
∫1) |
| 128 | 127, 127 | i1fmul 23269 |
. . . . . . . . 9
⊢ (𝐺 ∈ dom ∫1
→ (𝐺
∘𝑓 · 𝐺) ∈ dom
∫1) |
| 129 | 128 | adantl 481 |
. . . . . . . 8
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (𝐺 ∘𝑓 · 𝐺) ∈ dom
∫1) |
| 130 | 126, 129 | i1fadd 23268 |
. . . . . . 7
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ∈ dom
∫1) |
| 131 | | i1frn 23250 |
. . . . . . 7
⊢ (((𝐹 ∘𝑓
· 𝐹)
∘𝑓 + (𝐺 ∘𝑓 · 𝐺)) ∈ dom ∫1
→ ran ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺)) ∈
Fin) |
| 132 | 130, 131 | syl 17 |
. . . . . 6
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ∈ Fin) |
| 133 | | fnfi 8123 |
. . . . . 6
⊢
(((√ ↾ ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) Fn ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ∧ ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ∈ Fin) → (√ ↾ ran
((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) ∈
Fin) |
| 134 | 123, 132,
133 | syl2anc 691 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (√ ↾ ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∈ Fin) |
| 135 | | rnfi 8132 |
. . . . 5
⊢ ((√
↾ ran ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) ∈ Fin
→ ran (√ ↾ ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∈ Fin) |
| 136 | 134, 135 | syl 17 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ran (√ ↾ ran ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∈ Fin) |
| 137 | 106, 136 | syl5eqel 2692 |
. . 3
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → ran (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∈ Fin) |
| 138 | | cnvco 5230 |
. . . . . . 7
⊢ ◡(√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) = (◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ∘ ◡√) |
| 139 | 138 | imaeq1i 5382 |
. . . . . 6
⊢ (◡(√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) “ {𝑥}) = ((◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ∘ ◡√) “ {𝑥}) |
| 140 | | imaco 5557 |
. . . . . 6
⊢ ((◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) ∘ ◡√) “ {𝑥}) = (◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) “ (◡√ “ {𝑥})) |
| 141 | 139, 140 | eqtri 2632 |
. . . . 5
⊢ (◡(√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) “ {𝑥}) = (◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) “ (◡√ “ {𝑥})) |
| 142 | | i1fima 23251 |
. . . . . 6
⊢ (((𝐹 ∘𝑓
· 𝐹)
∘𝑓 + (𝐺 ∘𝑓 · 𝐺)) ∈ dom ∫1
→ (◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) “ (◡√ “ {𝑥})) ∈ dom vol) |
| 143 | 130, 142 | syl 17 |
. . . . 5
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (◡((𝐹 ∘𝑓
· 𝐹)
∘𝑓 + (𝐺 ∘𝑓 · 𝐺)) “ (◡√ “ {𝑥})) ∈ dom vol) |
| 144 | 141, 143 | syl5eqel 2692 |
. . . 4
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (◡(√
∘ ((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) “
{𝑥}) ∈ dom
vol) |
| 145 | 144 | adantr 480 |
. . 3
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ (ran (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∖ {0})) → (◡(√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) “ {𝑥}) ∈ dom vol) |
| 146 | 141 | fveq2i 6106 |
. . . 4
⊢
(vol‘(◡(√ ∘
((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) “
{𝑥})) = (vol‘(◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) “ (◡√ “ {𝑥}))) |
| 147 | | eldifsni 4261 |
. . . . . . . 8
⊢ (𝑥 ∈ (ran (√ ∘
((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) ∖ {0})
→ 𝑥 ≠
0) |
| 148 | | c0ex 9913 |
. . . . . . . . . . . 12
⊢ 0 ∈
V |
| 149 | 148 | elsn 4140 |
. . . . . . . . . . 11
⊢ (0 ∈
{𝑥} ↔ 0 = 𝑥) |
| 150 | | eqcom 2617 |
. . . . . . . . . . 11
⊢ (0 =
𝑥 ↔ 𝑥 = 0) |
| 151 | 149, 150 | bitri 263 |
. . . . . . . . . 10
⊢ (0 ∈
{𝑥} ↔ 𝑥 = 0) |
| 152 | 151 | necon3bbii 2829 |
. . . . . . . . 9
⊢ (¬ 0
∈ {𝑥} ↔ 𝑥 ≠ 0) |
| 153 | | sqrt0 13830 |
. . . . . . . . . 10
⊢
(√‘0) = 0 |
| 154 | 153 | eleq1i 2679 |
. . . . . . . . 9
⊢
((√‘0) ∈ {𝑥} ↔ 0 ∈ {𝑥}) |
| 155 | 152, 154 | xchnxbir 322 |
. . . . . . . 8
⊢ (¬
(√‘0) ∈ {𝑥} ↔ 𝑥 ≠ 0) |
| 156 | 147, 155 | sylibr 223 |
. . . . . . 7
⊢ (𝑥 ∈ (ran (√ ∘
((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) ∖ {0})
→ ¬ (√‘0) ∈ {𝑥}) |
| 157 | 156 | olcd 407 |
. . . . . 6
⊢ (𝑥 ∈ (ran (√ ∘
((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) ∖ {0})
→ (¬ 0 ∈ ℂ ∨ ¬ (√‘0) ∈ {𝑥})) |
| 158 | | ianor 508 |
. . . . . . 7
⊢ (¬ (0
∈ ℂ ∧ (√‘0) ∈ {𝑥}) ↔ (¬ 0 ∈ ℂ ∨ ¬
(√‘0) ∈ {𝑥})) |
| 159 | | elpreima 6245 |
. . . . . . . 8
⊢ (√
Fn ℂ → (0 ∈ (◡√
“ {𝑥}) ↔ (0
∈ ℂ ∧ (√‘0) ∈ {𝑥}))) |
| 160 | 56, 107, 159 | mp2b 10 |
. . . . . . 7
⊢ (0 ∈
(◡√ “ {𝑥}) ↔ (0 ∈ ℂ ∧
(√‘0) ∈ {𝑥})) |
| 161 | 158, 160 | xchnxbir 322 |
. . . . . 6
⊢ (¬ 0
∈ (◡√ “ {𝑥}) ↔ (¬ 0 ∈
ℂ ∨ ¬ (√‘0) ∈ {𝑥})) |
| 162 | 157, 161 | sylibr 223 |
. . . . 5
⊢ (𝑥 ∈ (ran (√ ∘
((𝐹
∘𝑓 · 𝐹) ∘𝑓 + (𝐺 ∘𝑓
· 𝐺))) ∖ {0})
→ ¬ 0 ∈ (◡√ “
{𝑥})) |
| 163 | | i1fima2 23252 |
. . . . 5
⊢ ((((𝐹 ∘𝑓
· 𝐹)
∘𝑓 + (𝐺 ∘𝑓 · 𝐺)) ∈ dom ∫1
∧ ¬ 0 ∈ (◡√ “
{𝑥})) →
(vol‘(◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) “ (◡√ “ {𝑥}))) ∈ ℝ) |
| 164 | 130, 162,
163 | syl2an 493 |
. . . 4
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ (ran (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∖ {0})) → (vol‘(◡((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺)) “ (◡√ “ {𝑥}))) ∈ ℝ) |
| 165 | 146, 164 | syl5eqel 2692 |
. . 3
⊢ (((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) ∧ 𝑥
∈ (ran (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∖ {0})) → (vol‘(◡(√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) “ {𝑥})) ∈ ℝ) |
| 166 | 105, 137,
145, 165 | i1fd 23254 |
. 2
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (√ ∘ ((𝐹 ∘𝑓 · 𝐹) ∘𝑓 +
(𝐺
∘𝑓 · 𝐺))) ∈ dom
∫1) |
| 167 | 61, 166 | eqeltrd 2688 |
1
⊢ ((𝐹 ∈ dom ∫1
∧ 𝐺 ∈ dom
∫1) → (abs ∘ (𝐹 ∘𝑓 + ((ℝ
× {i}) ∘𝑓 · 𝐺))) ∈ dom
∫1) |