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Mirrors > Home > ILE Home > Th. List > mulmoddvds | GIF version |
Description: If an integer is divisible by a positive integer, the product of this integer with another integer modulo the positive integer is 0. (Contributed by Alexander van der Vekens, 30-Aug-2018.) |
Ref | Expression |
---|---|
mulmoddvds | ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝑁 ∥ 𝐴 → ((𝐴 · 𝐵) mod 𝑁) = 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp2 988 | . . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → 𝐴 ∈ ℤ) | |
2 | zq 9564 | . . . . . . 7 ⊢ (𝐴 ∈ ℤ → 𝐴 ∈ ℚ) | |
3 | 1, 2 | syl 14 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → 𝐴 ∈ ℚ) |
4 | simp3 989 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → 𝐵 ∈ ℤ) | |
5 | simp1 987 | . . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → 𝑁 ∈ ℕ) | |
6 | nnq 9571 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℚ) | |
7 | 5, 6 | syl 14 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → 𝑁 ∈ ℚ) |
8 | 5 | nngt0d 8901 | . . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → 0 < 𝑁) |
9 | modqmulmod 10324 | . . . . . 6 ⊢ (((𝐴 ∈ ℚ ∧ 𝐵 ∈ ℤ) ∧ (𝑁 ∈ ℚ ∧ 0 < 𝑁)) → (((𝐴 mod 𝑁) · 𝐵) mod 𝑁) = ((𝐴 · 𝐵) mod 𝑁)) | |
10 | 3, 4, 7, 8, 9 | syl22anc 1229 | . . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (((𝐴 mod 𝑁) · 𝐵) mod 𝑁) = ((𝐴 · 𝐵) mod 𝑁)) |
11 | 10 | eqcomd 2171 | . . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → ((𝐴 · 𝐵) mod 𝑁) = (((𝐴 mod 𝑁) · 𝐵) mod 𝑁)) |
12 | 11 | adantr 274 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → ((𝐴 · 𝐵) mod 𝑁) = (((𝐴 mod 𝑁) · 𝐵) mod 𝑁)) |
13 | dvdsval3 11731 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ) → (𝑁 ∥ 𝐴 ↔ (𝐴 mod 𝑁) = 0)) | |
14 | 13 | 3adant3 1007 | . . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝑁 ∥ 𝐴 ↔ (𝐴 mod 𝑁) = 0)) |
15 | 14 | biimpa 294 | . . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → (𝐴 mod 𝑁) = 0) |
16 | 15 | oveq1d 5857 | . . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → ((𝐴 mod 𝑁) · 𝐵) = (0 · 𝐵)) |
17 | 16 | oveq1d 5857 | . . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → (((𝐴 mod 𝑁) · 𝐵) mod 𝑁) = ((0 · 𝐵) mod 𝑁)) |
18 | 4 | adantr 274 | . . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → 𝐵 ∈ ℤ) |
19 | 18 | zcnd 9314 | . . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → 𝐵 ∈ ℂ) |
20 | 19 | mul02d 8290 | . . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → (0 · 𝐵) = 0) |
21 | 20 | oveq1d 5857 | . . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → ((0 · 𝐵) mod 𝑁) = (0 mod 𝑁)) |
22 | 7 | adantr 274 | . . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → 𝑁 ∈ ℚ) |
23 | 8 | adantr 274 | . . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → 0 < 𝑁) |
24 | q0mod 10290 | . . . . . 6 ⊢ ((𝑁 ∈ ℚ ∧ 0 < 𝑁) → (0 mod 𝑁) = 0) | |
25 | 22, 23, 24 | syl2anc 409 | . . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → (0 mod 𝑁) = 0) |
26 | 21, 25 | eqtrd 2198 | . . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → ((0 · 𝐵) mod 𝑁) = 0) |
27 | 17, 26 | eqtrd 2198 | . . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → (((𝐴 mod 𝑁) · 𝐵) mod 𝑁) = 0) |
28 | 12, 27 | eqtrd 2198 | . 2 ⊢ (((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) ∧ 𝑁 ∥ 𝐴) → ((𝐴 · 𝐵) mod 𝑁) = 0) |
29 | 28 | ex 114 | 1 ⊢ ((𝑁 ∈ ℕ ∧ 𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → (𝑁 ∥ 𝐴 → ((𝐴 · 𝐵) mod 𝑁) = 0)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 ∧ w3a 968 = wceq 1343 ∈ wcel 2136 class class class wbr 3982 (class class class)co 5842 0cc0 7753 · cmul 7758 < clt 7933 ℕcn 8857 ℤcz 9191 ℚcq 9557 mod cmo 10257 ∥ cdvds 11727 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-mulrcl 7852 ax-addcom 7853 ax-mulcom 7854 ax-addass 7855 ax-mulass 7856 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-1rid 7860 ax-0id 7861 ax-rnegex 7862 ax-precex 7863 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-apti 7868 ax-pre-ltadd 7869 ax-pre-mulgt0 7870 ax-pre-mulext 7871 ax-arch 7872 |
This theorem depends on definitions: df-bi 116 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-reu 2451 df-rmo 2452 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-id 4271 df-po 4274 df-iso 4275 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-reap 8473 df-ap 8480 df-div 8569 df-inn 8858 df-n0 9115 df-z 9192 df-q 9558 df-rp 9590 df-fl 10205 df-mod 10258 df-dvds 11728 |
This theorem is referenced by: (None) |
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