Proof of Theorem moddvds
| Step | Hyp | Ref
| Expression |
| 1 | | nnq 9707 |
. . . . . 6
⊢ (𝑁 ∈ ℕ → 𝑁 ∈
ℚ) |
| 2 | 1 | adantr 276 |
. . . . 5
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 𝑁 ∈
ℚ) |
| 3 | | nngt0 9015 |
. . . . . 6
⊢ (𝑁 ∈ ℕ → 0 <
𝑁) |
| 4 | 3 | adantr 276 |
. . . . 5
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 0 <
𝑁) |
| 5 | | q0mod 10447 |
. . . . 5
⊢ ((𝑁 ∈ ℚ ∧ 0 <
𝑁) → (0 mod 𝑁) = 0) |
| 6 | 2, 4, 5 | syl2anc 411 |
. . . 4
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → (0 mod
𝑁) = 0) |
| 7 | 6 | eqeq2d 2208 |
. . 3
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) →
(((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁) ↔ ((𝐴 − 𝐵) mod 𝑁) = 0)) |
| 8 | | zq 9700 |
. . . . . . . . 9
⊢ (𝐴 ∈ ℤ → 𝐴 ∈
ℚ) |
| 9 | 8 | ad2antrl 490 |
. . . . . . . 8
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 𝐴 ∈
ℚ) |
| 10 | 9 | adantr 276 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) → 𝐴 ∈ ℚ) |
| 11 | | zq 9700 |
. . . . . . . . 9
⊢ (𝐵 ∈ ℤ → 𝐵 ∈
ℚ) |
| 12 | 11 | ad2antll 491 |
. . . . . . . 8
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 𝐵 ∈
ℚ) |
| 13 | 12 | adantr 276 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) → 𝐵 ∈ ℚ) |
| 14 | | qnegcl 9710 |
. . . . . . . 8
⊢ (𝐵 ∈ ℚ → -𝐵 ∈
ℚ) |
| 15 | 13, 14 | syl 14 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) → -𝐵 ∈ ℚ) |
| 16 | 2 | adantr 276 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) → 𝑁 ∈ ℚ) |
| 17 | 4 | adantr 276 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) → 0 < 𝑁) |
| 18 | | simpr 110 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) → (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) |
| 19 | 10, 13, 15, 16, 17, 18 | modqadd1 10453 |
. . . . . 6
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ (𝐴 mod 𝑁) = (𝐵 mod 𝑁)) → ((𝐴 + -𝐵) mod 𝑁) = ((𝐵 + -𝐵) mod 𝑁)) |
| 20 | 19 | ex 115 |
. . . . 5
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((𝐴 mod 𝑁) = (𝐵 mod 𝑁) → ((𝐴 + -𝐵) mod 𝑁) = ((𝐵 + -𝐵) mod 𝑁))) |
| 21 | | simprl 529 |
. . . . . . . . 9
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 𝐴 ∈
ℤ) |
| 22 | 21 | zcnd 9449 |
. . . . . . . 8
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 𝐴 ∈
ℂ) |
| 23 | | simprr 531 |
. . . . . . . . 9
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 𝐵 ∈
ℤ) |
| 24 | 23 | zcnd 9449 |
. . . . . . . 8
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → 𝐵 ∈
ℂ) |
| 25 | 22, 24 | negsubd 8343 |
. . . . . . 7
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → (𝐴 + -𝐵) = (𝐴 − 𝐵)) |
| 26 | 25 | oveq1d 5937 |
. . . . . 6
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((𝐴 + -𝐵) mod 𝑁) = ((𝐴 − 𝐵) mod 𝑁)) |
| 27 | 24 | negidd 8327 |
. . . . . . 7
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → (𝐵 + -𝐵) = 0) |
| 28 | 27 | oveq1d 5937 |
. . . . . 6
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((𝐵 + -𝐵) mod 𝑁) = (0 mod 𝑁)) |
| 29 | 26, 28 | eqeq12d 2211 |
. . . . 5
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) →
(((𝐴 + -𝐵) mod 𝑁) = ((𝐵 + -𝐵) mod 𝑁) ↔ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁))) |
| 30 | 20, 29 | sylibd 149 |
. . . 4
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((𝐴 mod 𝑁) = (𝐵 mod 𝑁) → ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁))) |
| 31 | 9 | adantr 276 |
. . . . . . . 8
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → 𝐴 ∈ ℚ) |
| 32 | 12 | adantr 276 |
. . . . . . . 8
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → 𝐵 ∈ ℚ) |
| 33 | | qsubcl 9712 |
. . . . . . . 8
⊢ ((𝐴 ∈ ℚ ∧ 𝐵 ∈ ℚ) → (𝐴 − 𝐵) ∈ ℚ) |
| 34 | 31, 32, 33 | syl2anc 411 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → (𝐴 − 𝐵) ∈ ℚ) |
| 35 | | 0z 9337 |
. . . . . . . 8
⊢ 0 ∈
ℤ |
| 36 | | zq 9700 |
. . . . . . . 8
⊢ (0 ∈
ℤ → 0 ∈ ℚ) |
| 37 | 35, 36 | mp1i 10 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → 0 ∈ ℚ) |
| 38 | 2 | adantr 276 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → 𝑁 ∈ ℚ) |
| 39 | 4 | adantr 276 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → 0 < 𝑁) |
| 40 | | simpr 110 |
. . . . . . 7
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) |
| 41 | 34, 37, 32, 38, 39, 40 | modqadd1 10453 |
. . . . . 6
⊢ (((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) ∧ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁)) → (((𝐴 − 𝐵) + 𝐵) mod 𝑁) = ((0 + 𝐵) mod 𝑁)) |
| 42 | 41 | ex 115 |
. . . . 5
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) →
(((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁) → (((𝐴 − 𝐵) + 𝐵) mod 𝑁) = ((0 + 𝐵) mod 𝑁))) |
| 43 | 22, 24 | npcand 8341 |
. . . . . . 7
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((𝐴 − 𝐵) + 𝐵) = 𝐴) |
| 44 | 43 | oveq1d 5937 |
. . . . . 6
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) →
(((𝐴 − 𝐵) + 𝐵) mod 𝑁) = (𝐴 mod 𝑁)) |
| 45 | 24 | addlidd 8176 |
. . . . . . 7
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → (0 +
𝐵) = 𝐵) |
| 46 | 45 | oveq1d 5937 |
. . . . . 6
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((0 +
𝐵) mod 𝑁) = (𝐵 mod 𝑁)) |
| 47 | 44, 46 | eqeq12d 2211 |
. . . . 5
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) →
((((𝐴 − 𝐵) + 𝐵) mod 𝑁) = ((0 + 𝐵) mod 𝑁) ↔ (𝐴 mod 𝑁) = (𝐵 mod 𝑁))) |
| 48 | 42, 47 | sylibd 149 |
. . . 4
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) →
(((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁) → (𝐴 mod 𝑁) = (𝐵 mod 𝑁))) |
| 49 | 30, 48 | impbid 129 |
. . 3
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((𝐴 mod 𝑁) = (𝐵 mod 𝑁) ↔ ((𝐴 − 𝐵) mod 𝑁) = (0 mod 𝑁))) |
| 50 | | zsubcl 9367 |
. . . 4
⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝐴 − 𝐵) ∈ ℤ) |
| 51 | | dvdsval3 11956 |
. . . 4
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 − 𝐵) ∈ ℤ) → (𝑁 ∥ (𝐴 − 𝐵) ↔ ((𝐴 − 𝐵) mod 𝑁) = 0)) |
| 52 | 50, 51 | sylan2 286 |
. . 3
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → (𝑁 ∥ (𝐴 − 𝐵) ↔ ((𝐴 − 𝐵) mod 𝑁) = 0)) |
| 53 | 7, 49, 52 | 3bitr4d 220 |
. 2
⊢ ((𝑁 ∈ ℕ ∧ (𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ)) → ((𝐴 mod 𝑁) = (𝐵 mod 𝑁) ↔ 𝑁 ∥ (𝐴 − 𝐵))) |
| 54 | 53 | 3impb 1201 |
1
⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → ((𝐴 mod 𝑁) = (𝐵 mod 𝑁) ↔ 𝑁 ∥ (𝐴 − 𝐵))) |