Step | Hyp | Ref
| Expression |
1 | | iblss.1 |
. . . 4
⊢ (𝜑 → 𝐴 ⊆ 𝐵) |
2 | 1 | resmptd 5371 |
. . 3
⊢ (𝜑 → ((𝑥 ∈ 𝐵 ↦ 𝐶) ↾ 𝐴) = (𝑥 ∈ 𝐴 ↦ 𝐶)) |
3 | | iblss.4 |
. . . . 5
⊢ (𝜑 → (𝑥 ∈ 𝐵 ↦ 𝐶) ∈
𝐿1) |
4 | | iblmbf 23340 |
. . . . 5
⊢ ((𝑥 ∈ 𝐵 ↦ 𝐶) ∈ 𝐿1 → (𝑥 ∈ 𝐵 ↦ 𝐶) ∈ MblFn) |
5 | 3, 4 | syl 17 |
. . . 4
⊢ (𝜑 → (𝑥 ∈ 𝐵 ↦ 𝐶) ∈ MblFn) |
6 | | iblss.2 |
. . . 4
⊢ (𝜑 → 𝐴 ∈ dom vol) |
7 | | mbfres 23217 |
. . . 4
⊢ (((𝑥 ∈ 𝐵 ↦ 𝐶) ∈ MblFn ∧ 𝐴 ∈ dom vol) → ((𝑥 ∈ 𝐵 ↦ 𝐶) ↾ 𝐴) ∈ MblFn) |
8 | 5, 6, 7 | syl2anc 691 |
. . 3
⊢ (𝜑 → ((𝑥 ∈ 𝐵 ↦ 𝐶) ↾ 𝐴) ∈ MblFn) |
9 | 2, 8 | eqeltrrd 2689 |
. 2
⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ MblFn) |
10 | | ifan 4084 |
. . . . . 6
⊢ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0) = if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) |
11 | | simpll 786 |
. . . . . . . . 9
⊢ (((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) → 𝜑) |
12 | 1 | sselda 3568 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐵) |
13 | 11, 12 | sylan 487 |
. . . . . . . 8
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐵) |
14 | | iblss.3 |
. . . . . . . . . . . . . . 15
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ 𝑉) |
15 | 5, 14 | mbfmptcl 23210 |
. . . . . . . . . . . . . 14
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ ℂ) |
16 | 11, 15 | sylan 487 |
. . . . . . . . . . . . 13
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ ℂ) |
17 | | elfzelz 12213 |
. . . . . . . . . . . . . . 15
⊢ (𝑘 ∈ (0...3) → 𝑘 ∈
ℤ) |
18 | 17 | ad3antlr 763 |
. . . . . . . . . . . . . 14
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → 𝑘 ∈ ℤ) |
19 | | ax-icn 9874 |
. . . . . . . . . . . . . . 15
⊢ i ∈
ℂ |
20 | | ine0 10344 |
. . . . . . . . . . . . . . 15
⊢ i ≠
0 |
21 | | expclz 12747 |
. . . . . . . . . . . . . . 15
⊢ ((i
∈ ℂ ∧ i ≠ 0 ∧ 𝑘 ∈ ℤ) → (i↑𝑘) ∈
ℂ) |
22 | 19, 20, 21 | mp3an12 1406 |
. . . . . . . . . . . . . 14
⊢ (𝑘 ∈ ℤ →
(i↑𝑘) ∈
ℂ) |
23 | 18, 22 | syl 17 |
. . . . . . . . . . . . 13
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → (i↑𝑘) ∈ ℂ) |
24 | | expne0i 12754 |
. . . . . . . . . . . . . . 15
⊢ ((i
∈ ℂ ∧ i ≠ 0 ∧ 𝑘 ∈ ℤ) → (i↑𝑘) ≠ 0) |
25 | 19, 20, 24 | mp3an12 1406 |
. . . . . . . . . . . . . 14
⊢ (𝑘 ∈ ℤ →
(i↑𝑘) ≠
0) |
26 | 18, 25 | syl 17 |
. . . . . . . . . . . . 13
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → (i↑𝑘) ≠ 0) |
27 | 16, 23, 26 | divcld 10680 |
. . . . . . . . . . . 12
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → (𝐶 / (i↑𝑘)) ∈ ℂ) |
28 | 27 | recld 13782 |
. . . . . . . . . . 11
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → (ℜ‘(𝐶 / (i↑𝑘))) ∈ ℝ) |
29 | | 0re 9919 |
. . . . . . . . . . 11
⊢ 0 ∈
ℝ |
30 | | ifcl 4080 |
. . . . . . . . . . 11
⊢
(((ℜ‘(𝐶 /
(i↑𝑘))) ∈ ℝ
∧ 0 ∈ ℝ) → if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈ ℝ) |
31 | 28, 29, 30 | sylancl 693 |
. . . . . . . . . 10
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈ ℝ) |
32 | 31 | rexrd 9968 |
. . . . . . . . 9
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈
ℝ*) |
33 | | max1 11890 |
. . . . . . . . . 10
⊢ ((0
∈ ℝ ∧ (ℜ‘(𝐶 / (i↑𝑘))) ∈ ℝ) → 0 ≤ if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)) |
34 | 29, 28, 33 | sylancr 694 |
. . . . . . . . 9
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → 0 ≤ if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)) |
35 | | elxrge0 12152 |
. . . . . . . . 9
⊢ (if(0
≤ (ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) ∈
(0[,]+∞) ↔ (if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈ ℝ* ∧ 0
≤ if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) |
36 | 32, 34, 35 | sylanbrc 695 |
. . . . . . . 8
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈
(0[,]+∞)) |
37 | 13, 36 | syldan 486 |
. . . . . . 7
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐴) → if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈
(0[,]+∞)) |
38 | | 0e0iccpnf 12154 |
. . . . . . . 8
⊢ 0 ∈
(0[,]+∞) |
39 | 38 | a1i 11 |
. . . . . . 7
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ ¬ 𝑥 ∈ 𝐴) → 0 ∈
(0[,]+∞)) |
40 | 37, 39 | ifclda 4070 |
. . . . . 6
⊢ (((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ∈
(0[,]+∞)) |
41 | 10, 40 | syl5eqel 2692 |
. . . . 5
⊢ (((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) → if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈
(0[,]+∞)) |
42 | | eqid 2610 |
. . . . 5
⊢ (𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐴 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0)) = (𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐴 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)) |
43 | 41, 42 | fmptd 6292 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))),
0)):ℝ⟶(0[,]+∞)) |
44 | | eqidd 2611 |
. . . . . 6
⊢ (𝜑 → (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) = (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) |
45 | | eqidd 2611 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (ℜ‘(𝐶 / (i↑𝑘))) = (ℜ‘(𝐶 / (i↑𝑘)))) |
46 | 44, 45, 3, 14 | iblitg 23341 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ ℤ) →
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ∈ ℝ) |
47 | 17, 46 | sylan2 490 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) →
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ∈ ℝ) |
48 | | ifan 4084 |
. . . . . . 7
⊢ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0) = if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) |
49 | 38 | a1i 11 |
. . . . . . . 8
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ ¬ 𝑥 ∈ 𝐵) → 0 ∈
(0[,]+∞)) |
50 | 36, 49 | ifclda 4070 |
. . . . . . 7
⊢ (((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) → if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ∈
(0[,]+∞)) |
51 | 48, 50 | syl5eqel 2692 |
. . . . . 6
⊢ (((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) → if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ∈
(0[,]+∞)) |
52 | | eqid 2610 |
. . . . . 6
⊢ (𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐵 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0)) = (𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐵 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)) |
53 | 51, 52 | fmptd 6292 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))),
0)):ℝ⟶(0[,]+∞)) |
54 | 31 | leidd 10473 |
. . . . . . . . . . 11
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ≤ if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) |
55 | | breq1 4586 |
. . . . . . . . . . . 12
⊢ (if(0
≤ (ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) = if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) → (if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) ≤ if(0
≤ (ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) ↔
if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ≤ if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0))) |
56 | | breq1 4586 |
. . . . . . . . . . . 12
⊢ (0 =
if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) → (0 ≤ if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) ↔
if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ≤ if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0))) |
57 | 55, 56 | ifboth 4074 |
. . . . . . . . . . 11
⊢ ((if(0
≤ (ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) ≤ if(0
≤ (ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) ∧ 0
≤ if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ≤ if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)) |
58 | 54, 34, 57 | syl2anc 691 |
. . . . . . . . . 10
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ≤ if(0 ≤
(ℜ‘(𝐶 /
(i↑𝑘))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)) |
59 | | iftrue 4042 |
. . . . . . . . . . 11
⊢ (𝑥 ∈ 𝐵 → if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) = if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) |
60 | 59 | adantl 481 |
. . . . . . . . . 10
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) = if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) |
61 | 58, 60 | breqtrrd 4611 |
. . . . . . . . 9
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ 𝑥 ∈ 𝐵) → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ≤ if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0)) |
62 | | 0le0 10987 |
. . . . . . . . . . 11
⊢ 0 ≤
0 |
63 | 62 | a1i 11 |
. . . . . . . . . 10
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ ¬ 𝑥 ∈ 𝐵) → 0 ≤ 0) |
64 | 13 | stoic1a 1688 |
. . . . . . . . . . 11
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ ¬ 𝑥 ∈ 𝐵) → ¬ 𝑥 ∈ 𝐴) |
65 | | iffalse 4045 |
. . . . . . . . . . 11
⊢ (¬
𝑥 ∈ 𝐴 → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) = 0) |
66 | 64, 65 | syl 17 |
. . . . . . . . . 10
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ ¬ 𝑥 ∈ 𝐵) → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) = 0) |
67 | | iffalse 4045 |
. . . . . . . . . . 11
⊢ (¬
𝑥 ∈ 𝐵 → if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) = 0) |
68 | 67 | adantl 481 |
. . . . . . . . . 10
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ ¬ 𝑥 ∈ 𝐵) → if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) = 0) |
69 | 63, 66, 68 | 3brtr4d 4615 |
. . . . . . . . 9
⊢ ((((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) ∧ ¬ 𝑥 ∈ 𝐵) → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ≤ if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0)) |
70 | 61, 69 | pm2.61dan 828 |
. . . . . . . 8
⊢ (((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) → if(𝑥 ∈ 𝐴, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0) ≤ if(𝑥 ∈ 𝐵, if(0 ≤ (ℜ‘(𝐶 / (i↑𝑘))), (ℜ‘(𝐶 / (i↑𝑘))), 0), 0)) |
71 | 70, 10, 48 | 3brtr4g 4617 |
. . . . . . 7
⊢ (((𝜑 ∧ 𝑘 ∈ (0...3)) ∧ 𝑥 ∈ ℝ) → if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ≤ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) |
72 | 71 | ralrimiva 2949 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → ∀𝑥 ∈ ℝ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0) ≤ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) |
73 | | reex 9906 |
. . . . . . . 8
⊢ ℝ
∈ V |
74 | 73 | a1i 11 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → ℝ ∈
V) |
75 | | eqidd 2611 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) = (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) |
76 | | eqidd 2611 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) = (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) |
77 | 74, 41, 51, 75, 76 | ofrfval2 6813 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → ((𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) ∘𝑟 ≤
(𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐵 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0)) ↔
∀𝑥 ∈ ℝ
if((𝑥 ∈ 𝐴 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0) ≤
if((𝑥 ∈ 𝐵 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0))) |
78 | 72, 77 | mpbird 246 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) → (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) ∘𝑟 ≤
(𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐵 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0))) |
79 | | itg2le 23312 |
. . . . 5
⊢ (((𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐴 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)):ℝ⟶(0[,]+∞) ∧ (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)):ℝ⟶(0[,]+∞) ∧
(𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐴 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0))
∘𝑟 ≤ (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) →
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ≤
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)))) |
80 | 43, 53, 78, 79 | syl3anc 1318 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) →
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ≤
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)))) |
81 | | itg2lecl 23311 |
. . . 4
⊢ (((𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐴 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))),
0)):ℝ⟶(0[,]+∞) ∧ (∫2‘(𝑥 ∈ ℝ ↦
if((𝑥 ∈ 𝐵 ∧ 0 ≤
(ℜ‘(𝐶 /
(i↑𝑘)))),
(ℜ‘(𝐶 /
(i↑𝑘))), 0))) ∈
ℝ ∧ (∫2‘(𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ≤
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐵 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)))) →
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ∈ ℝ) |
82 | 43, 47, 80, 81 | syl3anc 1318 |
. . 3
⊢ ((𝜑 ∧ 𝑘 ∈ (0...3)) →
(∫2‘(𝑥
∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ∈ ℝ) |
83 | 82 | ralrimiva 2949 |
. 2
⊢ (𝜑 → ∀𝑘 ∈
(0...3)(∫2‘(𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ∈ ℝ) |
84 | | eqidd 2611 |
. . 3
⊢ (𝜑 → (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0)) = (𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) |
85 | | eqidd 2611 |
. . 3
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (ℜ‘(𝐶 / (i↑𝑘))) = (ℜ‘(𝐶 / (i↑𝑘)))) |
86 | 12, 15 | syldan 486 |
. . 3
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ ℂ) |
87 | 84, 85, 86 | isibl2 23339 |
. 2
⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝐿1 ↔
((𝑥 ∈ 𝐴 ↦ 𝐶) ∈ MblFn ∧ ∀𝑘 ∈
(0...3)(∫2‘(𝑥 ∈ ℝ ↦ if((𝑥 ∈ 𝐴 ∧ 0 ≤ (ℜ‘(𝐶 / (i↑𝑘)))), (ℜ‘(𝐶 / (i↑𝑘))), 0))) ∈ ℝ))) |
88 | 9, 83, 87 | mpbir2and 959 |
1
⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐶) ∈
𝐿1) |