Step | Hyp | Ref
| Expression |
1 | | iprodmul.1 |
. 2
⊢ 𝑍 =
(ℤ≥‘𝑀) |
2 | | iprodmul.2 |
. 2
⊢ (𝜑 → 𝑀 ∈ ℤ) |
3 | | iprodmul.3 |
. . . 4
⊢ (𝜑 → ∃𝑛 ∈ 𝑍 ∃𝑦(𝑦 ≠ 0 ∧ seq𝑛( · , 𝐹) ⇝ 𝑦)) |
4 | | iprodmul.4 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = 𝐴) |
5 | | iprodmul.5 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐴 ∈ ℂ) |
6 | 4, 5 | eqeltrd 2839 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℂ) |
7 | | iprodmul.6 |
. . . 4
⊢ (𝜑 → ∃𝑚 ∈ 𝑍 ∃𝑧(𝑧 ≠ 0 ∧ seq𝑚( · , 𝐺) ⇝ 𝑧)) |
8 | | iprodmul.7 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐺‘𝑘) = 𝐵) |
9 | | iprodmul.8 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ ℂ) |
10 | 8, 9 | eqeltrd 2839 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐺‘𝑘) ∈ ℂ) |
11 | | fveq2 6774 |
. . . . . . 7
⊢ (𝑎 = 𝑘 → (𝐹‘𝑎) = (𝐹‘𝑘)) |
12 | | fveq2 6774 |
. . . . . . 7
⊢ (𝑎 = 𝑘 → (𝐺‘𝑎) = (𝐺‘𝑘)) |
13 | 11, 12 | oveq12d 7293 |
. . . . . 6
⊢ (𝑎 = 𝑘 → ((𝐹‘𝑎) · (𝐺‘𝑎)) = ((𝐹‘𝑘) · (𝐺‘𝑘))) |
14 | | eqid 2738 |
. . . . . 6
⊢ (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎))) = (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎))) |
15 | | ovex 7308 |
. . . . . 6
⊢ ((𝐹‘𝑘) · (𝐺‘𝑘)) ∈ V |
16 | 13, 14, 15 | fvmpt 6875 |
. . . . 5
⊢ (𝑘 ∈ 𝑍 → ((𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘))) |
17 | 16 | adantl 482 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ((𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘))) |
18 | 1, 3, 6, 7, 10, 17 | ntrivcvgmul 15614 |
. . 3
⊢ (𝜑 → ∃𝑝 ∈ 𝑍 ∃𝑤(𝑤 ≠ 0 ∧ seq𝑝( · , (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))) ⇝ 𝑤)) |
19 | | fveq2 6774 |
. . . . . . . . . 10
⊢ (𝑚 = 𝑎 → (𝐹‘𝑚) = (𝐹‘𝑎)) |
20 | | fveq2 6774 |
. . . . . . . . . 10
⊢ (𝑚 = 𝑎 → (𝐺‘𝑚) = (𝐺‘𝑎)) |
21 | 19, 20 | oveq12d 7293 |
. . . . . . . . 9
⊢ (𝑚 = 𝑎 → ((𝐹‘𝑚) · (𝐺‘𝑚)) = ((𝐹‘𝑎) · (𝐺‘𝑎))) |
22 | 21 | cbvmptv 5187 |
. . . . . . . 8
⊢ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚))) = (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎))) |
23 | | seqeq3 13726 |
. . . . . . . 8
⊢ ((𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚))) = (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎))) → seq𝑝( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) = seq𝑝( · , (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎))))) |
24 | 22, 23 | ax-mp 5 |
. . . . . . 7
⊢ seq𝑝( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) = seq𝑝( · , (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))) |
25 | 24 | breq1i 5081 |
. . . . . 6
⊢ (seq𝑝( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ⇝ 𝑤 ↔ seq𝑝( · , (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))) ⇝ 𝑤) |
26 | 25 | anbi2i 623 |
. . . . 5
⊢ ((𝑤 ≠ 0 ∧ seq𝑝( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ⇝ 𝑤) ↔ (𝑤 ≠ 0 ∧ seq𝑝( · , (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))) ⇝ 𝑤)) |
27 | 26 | exbii 1850 |
. . . 4
⊢
(∃𝑤(𝑤 ≠ 0 ∧ seq𝑝( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ⇝ 𝑤) ↔ ∃𝑤(𝑤 ≠ 0 ∧ seq𝑝( · , (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))) ⇝ 𝑤)) |
28 | 27 | rexbii 3181 |
. . 3
⊢
(∃𝑝 ∈
𝑍 ∃𝑤(𝑤 ≠ 0 ∧ seq𝑝( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ⇝ 𝑤) ↔ ∃𝑝 ∈ 𝑍 ∃𝑤(𝑤 ≠ 0 ∧ seq𝑝( · , (𝑎 ∈ 𝑍 ↦ ((𝐹‘𝑎) · (𝐺‘𝑎)))) ⇝ 𝑤)) |
29 | 18, 28 | sylibr 233 |
. 2
⊢ (𝜑 → ∃𝑝 ∈ 𝑍 ∃𝑤(𝑤 ≠ 0 ∧ seq𝑝( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ⇝ 𝑤)) |
30 | | eqid 2738 |
. . . 4
⊢ (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚))) = (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚))) |
31 | | fveq2 6774 |
. . . . 5
⊢ (𝑚 = 𝑘 → (𝐹‘𝑚) = (𝐹‘𝑘)) |
32 | | fveq2 6774 |
. . . . 5
⊢ (𝑚 = 𝑘 → (𝐺‘𝑚) = (𝐺‘𝑘)) |
33 | 31, 32 | oveq12d 7293 |
. . . 4
⊢ (𝑚 = 𝑘 → ((𝐹‘𝑚) · (𝐺‘𝑚)) = ((𝐹‘𝑘) · (𝐺‘𝑘))) |
34 | | simpr 485 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝑘 ∈ 𝑍) |
35 | 6, 10 | mulcld 10995 |
. . . 4
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ((𝐹‘𝑘) · (𝐺‘𝑘)) ∈ ℂ) |
36 | 30, 33, 34, 35 | fvmptd3 6898 |
. . 3
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ((𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘))) |
37 | 4, 8 | oveq12d 7293 |
. . 3
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ((𝐹‘𝑘) · (𝐺‘𝑘)) = (𝐴 · 𝐵)) |
38 | 36, 37 | eqtrd 2778 |
. 2
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ((𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))‘𝑘) = (𝐴 · 𝐵)) |
39 | 5, 9 | mulcld 10995 |
. 2
⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐴 · 𝐵) ∈ ℂ) |
40 | 1, 2, 3, 4, 5 | iprodclim2 15709 |
. . 3
⊢ (𝜑 → seq𝑀( · , 𝐹) ⇝ ∏𝑘 ∈ 𝑍 𝐴) |
41 | | seqex 13723 |
. . . 4
⊢ seq𝑀( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ∈ V |
42 | 41 | a1i 11 |
. . 3
⊢ (𝜑 → seq𝑀( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ∈ V) |
43 | 1, 2, 7, 8, 9 | iprodclim2 15709 |
. . 3
⊢ (𝜑 → seq𝑀( · , 𝐺) ⇝ ∏𝑘 ∈ 𝑍 𝐵) |
44 | 1, 2, 6 | prodf 15599 |
. . . 4
⊢ (𝜑 → seq𝑀( · , 𝐹):𝑍⟶ℂ) |
45 | 44 | ffvelrnda 6961 |
. . 3
⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (seq𝑀( · , 𝐹)‘𝑗) ∈ ℂ) |
46 | 1, 2, 10 | prodf 15599 |
. . . 4
⊢ (𝜑 → seq𝑀( · , 𝐺):𝑍⟶ℂ) |
47 | 46 | ffvelrnda 6961 |
. . 3
⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (seq𝑀( · , 𝐺)‘𝑗) ∈ ℂ) |
48 | | simpr 485 |
. . . . 5
⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑗 ∈ 𝑍) |
49 | 48, 1 | eleqtrdi 2849 |
. . . 4
⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝑗 ∈ (ℤ≥‘𝑀)) |
50 | | elfzuz 13252 |
. . . . . . 7
⊢ (𝑘 ∈ (𝑀...𝑗) → 𝑘 ∈ (ℤ≥‘𝑀)) |
51 | 50, 1 | eleqtrrdi 2850 |
. . . . . 6
⊢ (𝑘 ∈ (𝑀...𝑗) → 𝑘 ∈ 𝑍) |
52 | 51, 6 | sylan2 593 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑗)) → (𝐹‘𝑘) ∈ ℂ) |
53 | 52 | adantlr 712 |
. . . 4
⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑘 ∈ (𝑀...𝑗)) → (𝐹‘𝑘) ∈ ℂ) |
54 | 51, 10 | sylan2 593 |
. . . . 5
⊢ ((𝜑 ∧ 𝑘 ∈ (𝑀...𝑗)) → (𝐺‘𝑘) ∈ ℂ) |
55 | 54 | adantlr 712 |
. . . 4
⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑘 ∈ (𝑀...𝑗)) → (𝐺‘𝑘) ∈ ℂ) |
56 | 36 | adantlr 712 |
. . . . 5
⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑘 ∈ 𝑍) → ((𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘))) |
57 | 51, 56 | sylan2 593 |
. . . 4
⊢ (((𝜑 ∧ 𝑗 ∈ 𝑍) ∧ 𝑘 ∈ (𝑀...𝑗)) → ((𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))‘𝑘) = ((𝐹‘𝑘) · (𝐺‘𝑘))) |
58 | 49, 53, 55, 57 | prodfmul 15602 |
. . 3
⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → (seq𝑀( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚))))‘𝑗) = ((seq𝑀( · , 𝐹)‘𝑗) · (seq𝑀( · , 𝐺)‘𝑗))) |
59 | 1, 2, 40, 42, 43, 45, 47, 58 | climmul 15342 |
. 2
⊢ (𝜑 → seq𝑀( · , (𝑚 ∈ 𝑍 ↦ ((𝐹‘𝑚) · (𝐺‘𝑚)))) ⇝ (∏𝑘 ∈ 𝑍 𝐴 · ∏𝑘 ∈ 𝑍 𝐵)) |
60 | 1, 2, 29, 38, 39, 59 | iprodclim 15708 |
1
⊢ (𝜑 → ∏𝑘 ∈ 𝑍 (𝐴 · 𝐵) = (∏𝑘 ∈ 𝑍 𝐴 · ∏𝑘 ∈ 𝑍 𝐵)) |