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Mirrors > Home > ILE Home > Th. List > rpmulgcd | GIF version |
Description: If 𝐾 and 𝑀 are relatively prime, then the GCD of 𝐾 and 𝑀 · 𝑁 is the GCD of 𝐾 and 𝑁. (Contributed by Scott Fenton, 12-Apr-2014.) (Revised by Mario Carneiro, 19-Apr-2014.) |
Ref | Expression |
---|---|
rpmulgcd | ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → (𝐾 gcd (𝑀 · 𝑁)) = (𝐾 gcd 𝑁)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | gcdmultiple 11953 | . . . . . 6 ⊢ ((𝐾 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝐾 gcd (𝐾 · 𝑁)) = 𝐾) | |
2 | 1 | 3adant2 1006 | . . . . 5 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝐾 gcd (𝐾 · 𝑁)) = 𝐾) |
3 | 2 | oveq1d 5857 | . . . 4 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → ((𝐾 gcd (𝐾 · 𝑁)) gcd (𝑀 · 𝑁)) = (𝐾 gcd (𝑀 · 𝑁))) |
4 | nnz 9210 | . . . . . 6 ⊢ (𝐾 ∈ ℕ → 𝐾 ∈ ℤ) | |
5 | 4 | 3ad2ant1 1008 | . . . . 5 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → 𝐾 ∈ ℤ) |
6 | nnz 9210 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ) | |
7 | zmulcl 9244 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 · 𝑁) ∈ ℤ) | |
8 | 4, 6, 7 | syl2an 287 | . . . . . 6 ⊢ ((𝐾 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝐾 · 𝑁) ∈ ℤ) |
9 | 8 | 3adant2 1006 | . . . . 5 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝐾 · 𝑁) ∈ ℤ) |
10 | nnz 9210 | . . . . . . 7 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℤ) | |
11 | zmulcl 9244 | . . . . . . 7 ⊢ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝑀 · 𝑁) ∈ ℤ) | |
12 | 10, 6, 11 | syl2an 287 | . . . . . 6 ⊢ ((𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝑀 · 𝑁) ∈ ℤ) |
13 | 12 | 3adant1 1005 | . . . . 5 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝑀 · 𝑁) ∈ ℤ) |
14 | gcdass 11948 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ (𝐾 · 𝑁) ∈ ℤ ∧ (𝑀 · 𝑁) ∈ ℤ) → ((𝐾 gcd (𝐾 · 𝑁)) gcd (𝑀 · 𝑁)) = (𝐾 gcd ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)))) | |
15 | 5, 9, 13, 14 | syl3anc 1228 | . . . 4 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → ((𝐾 gcd (𝐾 · 𝑁)) gcd (𝑀 · 𝑁)) = (𝐾 gcd ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)))) |
16 | 3, 15 | eqtr3d 2200 | . . 3 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝐾 gcd (𝑀 · 𝑁)) = (𝐾 gcd ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)))) |
17 | 16 | adantr 274 | . 2 ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → (𝐾 gcd (𝑀 · 𝑁)) = (𝐾 gcd ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)))) |
18 | nnnn0 9121 | . . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ0) | |
19 | mulgcdr 11951 | . . . . . 6 ⊢ ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ ∧ 𝑁 ∈ ℕ0) → ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)) = ((𝐾 gcd 𝑀) · 𝑁)) | |
20 | 4, 10, 18, 19 | syl3an 1270 | . . . . 5 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)) = ((𝐾 gcd 𝑀) · 𝑁)) |
21 | oveq1 5849 | . . . . 5 ⊢ ((𝐾 gcd 𝑀) = 1 → ((𝐾 gcd 𝑀) · 𝑁) = (1 · 𝑁)) | |
22 | 20, 21 | sylan9eq 2219 | . . . 4 ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)) = (1 · 𝑁)) |
23 | nncn 8865 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ) | |
24 | 23 | 3ad2ant3 1010 | . . . . . 6 ⊢ ((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) → 𝑁 ∈ ℂ) |
25 | 24 | adantr 274 | . . . . 5 ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → 𝑁 ∈ ℂ) |
26 | 25 | mulid2d 7917 | . . . 4 ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → (1 · 𝑁) = 𝑁) |
27 | 22, 26 | eqtrd 2198 | . . 3 ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → ((𝐾 · 𝑁) gcd (𝑀 · 𝑁)) = 𝑁) |
28 | 27 | oveq2d 5858 | . 2 ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → (𝐾 gcd ((𝐾 · 𝑁) gcd (𝑀 · 𝑁))) = (𝐾 gcd 𝑁)) |
29 | 17, 28 | eqtrd 2198 | 1 ⊢ (((𝐾 ∈ ℕ ∧ 𝑀 ∈ ℕ ∧ 𝑁 ∈ ℕ) ∧ (𝐾 gcd 𝑀) = 1) → (𝐾 gcd (𝑀 · 𝑁)) = (𝐾 gcd 𝑁)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∧ w3a 968 = wceq 1343 ∈ wcel 2136 (class class class)co 5842 ℂcc 7751 1c1 7754 · cmul 7758 ℕcn 8857 ℕ0cn0 9114 ℤcz 9191 gcd cgcd 11875 |
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-coll 4097 ax-sep 4100 ax-nul 4108 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-iinf 4565 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 ax-caucvg 7873 |
This theorem depends on definitions: df-bi 116 df-stab 821 df-dc 825 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-nul 3410 df-if 3521 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-tr 4081 df-id 4271 df-po 4274 df-iso 4275 df-iord 4344 df-on 4346 df-ilim 4347 df-suc 4349 df-iom 4568 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-f1 5193 df-fo 5194 df-f1o 5195 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-recs 6273 df-frec 6359 df-sup 6949 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-2 8916 df-3 8917 df-4 8918 df-n0 9115 df-z 9192 df-uz 9467 df-q 9558 df-rp 9590 df-fz 9945 df-fzo 10078 df-fl 10205 df-mod 10258 df-seqfrec 10381 df-exp 10455 df-cj 10784 df-re 10785 df-im 10786 df-rsqrt 10940 df-abs 10941 df-dvds 11728 df-gcd 11876 |
This theorem is referenced by: rplpwr 11960 |
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