Proof of Theorem fsumdvdsdiaglem
Step | Hyp | Ref
| Expression |
1 | | breq1 5071 |
. . . 4
⊢ (𝑥 = 𝑘 → (𝑥 ∥ 𝑁 ↔ 𝑘 ∥ 𝑁)) |
2 | | elrabi 3677 |
. . . . 5
⊢ (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)} → 𝑘 ∈ ℕ) |
3 | 2 | ad2antll 727 |
. . . 4
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑘 ∈ ℕ) |
4 | | breq1 5071 |
. . . . . . . 8
⊢ (𝑥 = 𝑘 → (𝑥 ∥ (𝑁 / 𝑗) ↔ 𝑘 ∥ (𝑁 / 𝑗))) |
5 | 4 | elrab 3682 |
. . . . . . 7
⊢ (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)} ↔ (𝑘 ∈ ℕ ∧ 𝑘 ∥ (𝑁 / 𝑗))) |
6 | 5 | simprbi 499 |
. . . . . 6
⊢ (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)} → 𝑘 ∥ (𝑁 / 𝑗)) |
7 | 6 | ad2antll 727 |
. . . . 5
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑘 ∥ (𝑁 / 𝑗)) |
8 | | fsumdvdsdiag.1 |
. . . . . . . 8
⊢ (𝜑 → 𝑁 ∈ ℕ) |
9 | 8 | adantr 483 |
. . . . . . 7
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑁 ∈ ℕ) |
10 | | simprl 769 |
. . . . . . 7
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) |
11 | | dvdsdivcl 15668 |
. . . . . . 7
⊢ ((𝑁 ∈ ℕ ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) → (𝑁 / 𝑗) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) |
12 | 9, 10, 11 | syl2anc 586 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑁 / 𝑗) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) |
13 | | breq1 5071 |
. . . . . . . 8
⊢ (𝑥 = (𝑁 / 𝑗) → (𝑥 ∥ 𝑁 ↔ (𝑁 / 𝑗) ∥ 𝑁)) |
14 | 13 | elrab 3682 |
. . . . . . 7
⊢ ((𝑁 / 𝑗) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ↔ ((𝑁 / 𝑗) ∈ ℕ ∧ (𝑁 / 𝑗) ∥ 𝑁)) |
15 | 14 | simprbi 499 |
. . . . . 6
⊢ ((𝑁 / 𝑗) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} → (𝑁 / 𝑗) ∥ 𝑁) |
16 | 12, 15 | syl 17 |
. . . . 5
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑁 / 𝑗) ∥ 𝑁) |
17 | 3 | nnzd 12089 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑘 ∈ ℤ) |
18 | | elrabi 3677 |
. . . . . . . 8
⊢ ((𝑁 / 𝑗) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} → (𝑁 / 𝑗) ∈ ℕ) |
19 | 12, 18 | syl 17 |
. . . . . . 7
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑁 / 𝑗) ∈ ℕ) |
20 | 19 | nnzd 12089 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑁 / 𝑗) ∈ ℤ) |
21 | 9 | nnzd 12089 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑁 ∈ ℤ) |
22 | | dvdstr 15648 |
. . . . . 6
⊢ ((𝑘 ∈ ℤ ∧ (𝑁 / 𝑗) ∈ ℤ ∧ 𝑁 ∈ ℤ) → ((𝑘 ∥ (𝑁 / 𝑗) ∧ (𝑁 / 𝑗) ∥ 𝑁) → 𝑘 ∥ 𝑁)) |
23 | 17, 20, 21, 22 | syl3anc 1367 |
. . . . 5
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → ((𝑘 ∥ (𝑁 / 𝑗) ∧ (𝑁 / 𝑗) ∥ 𝑁) → 𝑘 ∥ 𝑁)) |
24 | 7, 16, 23 | mp2and 697 |
. . . 4
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑘 ∥ 𝑁) |
25 | 1, 3, 24 | elrabd 3684 |
. . 3
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) |
26 | | breq1 5071 |
. . . 4
⊢ (𝑥 = 𝑗 → (𝑥 ∥ (𝑁 / 𝑘) ↔ 𝑗 ∥ (𝑁 / 𝑘))) |
27 | | elrabi 3677 |
. . . . 5
⊢ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} → 𝑗 ∈ ℕ) |
28 | 27 | ad2antrl 726 |
. . . 4
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑗 ∈ ℕ) |
29 | 28 | nnzd 12089 |
. . . . . . . 8
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑗 ∈ ℤ) |
30 | 28 | nnne0d 11690 |
. . . . . . . 8
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑗 ≠ 0) |
31 | | dvdsmulcr 15641 |
. . . . . . . 8
⊢ ((𝑘 ∈ ℤ ∧ (𝑁 / 𝑗) ∈ ℤ ∧ (𝑗 ∈ ℤ ∧ 𝑗 ≠ 0)) → ((𝑘 · 𝑗) ∥ ((𝑁 / 𝑗) · 𝑗) ↔ 𝑘 ∥ (𝑁 / 𝑗))) |
32 | 17, 20, 29, 30, 31 | syl112anc 1370 |
. . . . . . 7
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → ((𝑘 · 𝑗) ∥ ((𝑁 / 𝑗) · 𝑗) ↔ 𝑘 ∥ (𝑁 / 𝑗))) |
33 | 7, 32 | mpbird 259 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑘 · 𝑗) ∥ ((𝑁 / 𝑗) · 𝑗)) |
34 | 9 | nncnd 11656 |
. . . . . . . 8
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑁 ∈ ℂ) |
35 | 28 | nncnd 11656 |
. . . . . . . 8
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑗 ∈ ℂ) |
36 | 34, 35, 30 | divcan1d 11419 |
. . . . . . 7
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → ((𝑁 / 𝑗) · 𝑗) = 𝑁) |
37 | 3 | nncnd 11656 |
. . . . . . . 8
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑘 ∈ ℂ) |
38 | 3 | nnne0d 11690 |
. . . . . . . 8
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑘 ≠ 0) |
39 | 34, 37, 38 | divcan2d 11420 |
. . . . . . 7
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑘 · (𝑁 / 𝑘)) = 𝑁) |
40 | 36, 39 | eqtr4d 2861 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → ((𝑁 / 𝑗) · 𝑗) = (𝑘 · (𝑁 / 𝑘))) |
41 | 33, 40 | breqtrd 5094 |
. . . . 5
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑘 · 𝑗) ∥ (𝑘 · (𝑁 / 𝑘))) |
42 | | ssrab2 4058 |
. . . . . . . 8
⊢ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ⊆ ℕ |
43 | | dvdsdivcl 15668 |
. . . . . . . . 9
⊢ ((𝑁 ∈ ℕ ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) → (𝑁 / 𝑘) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) |
44 | 9, 25, 43 | syl2anc 586 |
. . . . . . . 8
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑁 / 𝑘) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁}) |
45 | 42, 44 | sseldi 3967 |
. . . . . . 7
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑁 / 𝑘) ∈ ℕ) |
46 | 45 | nnzd 12089 |
. . . . . 6
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑁 / 𝑘) ∈ ℤ) |
47 | | dvdscmulr 15640 |
. . . . . 6
⊢ ((𝑗 ∈ ℤ ∧ (𝑁 / 𝑘) ∈ ℤ ∧ (𝑘 ∈ ℤ ∧ 𝑘 ≠ 0)) → ((𝑘 · 𝑗) ∥ (𝑘 · (𝑁 / 𝑘)) ↔ 𝑗 ∥ (𝑁 / 𝑘))) |
48 | 29, 46, 17, 38, 47 | syl112anc 1370 |
. . . . 5
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → ((𝑘 · 𝑗) ∥ (𝑘 · (𝑁 / 𝑘)) ↔ 𝑗 ∥ (𝑁 / 𝑘))) |
49 | 41, 48 | mpbid 234 |
. . . 4
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑗 ∥ (𝑁 / 𝑘)) |
50 | 26, 28, 49 | elrabd 3684 |
. . 3
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑘)}) |
51 | 25, 50 | jca 514 |
. 2
⊢ ((𝜑 ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)})) → (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑘)})) |
52 | 51 | ex 415 |
1
⊢ (𝜑 → ((𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑗)}) → (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑁} ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑁 / 𝑘)}))) |