Metamath Proof Explorer


Theorem mulgcddvds

Description: One half of rpmulgcd2 , which does not need the coprimality assumption. (Contributed by Mario Carneiro, 2-Jul-2015)

Ref Expression
Assertion mulgcddvds ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ K gcd M ⁢ K gcd N

Proof

Step Hyp Ref Expression
1 simp1 ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K ∈ ℤ
2 simp2 ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ
3 simp3 ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → N ∈ ℤ
4 2 3 zmulcld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⋅ N ∈ ℤ
5 1 4 gcdcld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∈ ℕ 0
6 5 nn0zd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∈ ℤ
7 dvds0 ⊢ K gcd M ⋅ N ∈ ℤ → K gcd M ⋅ N ∥ 0
8 6 7 syl ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ 0
9 8 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N = 0 → K gcd M ⋅ N ∥ 0
10 oveq2 ⊢ K gcd N = 0 → K gcd M ⁢ K gcd N = K gcd M ⋅ 0
11 1 2 gcdcld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ∈ ℕ 0
12 11 nn0cnd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ∈ ℂ
13 12 mul01d ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ 0 = 0
14 10 13 sylan9eqr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N = 0 → K gcd M ⁢ K gcd N = 0
15 9 14 breqtrrd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N = 0 → K gcd M ⋅ N ∥ K gcd M ⁢ K gcd N
16 6 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N ∈ ℤ
17 16 zcnd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N ∈ ℂ
18 1 3 gcdcld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∈ ℕ 0
19 18 nn0zd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∈ ℤ
20 19 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd N ∈ ℤ
21 20 zcnd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd N ∈ ℂ
22 simpr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd N ≠ 0
23 17 21 22 divcan1d ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N = K gcd M ⋅ N
24 gcddvds ⊢ K ∈ ℤ ∧ M ⋅ N ∈ ℤ → K gcd M ⋅ N ∥ K ∧ K gcd M ⋅ N ∥ M ⋅ N
25 1 4 24 syl2anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ K ∧ K gcd M ⋅ N ∥ M ⋅ N
26 25 simpld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ K
27 6 1 19 26 dvdsmultr1d ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ K ⁢ K gcd N
28 27 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N ∥ K ⁢ K gcd N
29 23 28 eqbrtrd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ K ⁢ K gcd N
30 gcddvds ⊢ K ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ K ∧ K gcd N ∥ N
31 1 3 30 syl2anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ K ∧ K gcd N ∥ N
32 31 simpld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ K
33 31 simprd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ N
34 dvdsmultr2 ⊢ K gcd N ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ N → K gcd N ∥ M ⋅ N
35 19 2 3 34 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ N → K gcd N ∥ M ⋅ N
36 33 35 mpd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ M ⋅ N
37 dvdsgcd ⊢ K gcd N ∈ ℤ ∧ K ∈ ℤ ∧ M ⋅ N ∈ ℤ → K gcd N ∥ K ∧ K gcd N ∥ M ⋅ N → K gcd N ∥ K gcd M ⋅ N
38 19 1 4 37 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ K ∧ K gcd N ∥ M ⋅ N → K gcd N ∥ K gcd M ⋅ N
39 32 36 38 mp2and ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∥ K gcd M ⋅ N
40 39 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd N ∥ K gcd M ⋅ N
41 dvdsval2 ⊢ K gcd N ∈ ℤ ∧ K gcd N ≠ 0 ∧ K gcd M ⋅ N ∈ ℤ → K gcd N ∥ K gcd M ⋅ N ↔ K gcd M ⋅ N K gcd N ∈ ℤ
42 20 22 16 41 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd N ∥ K gcd M ⋅ N ↔ K gcd M ⋅ N K gcd N ∈ ℤ
43 40 42 mpbid ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ∈ ℤ
44 1 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K ∈ ℤ
45 dvdsmulcr ⊢ K gcd M ⋅ N K gcd N ∈ ℤ ∧ K ∈ ℤ ∧ K gcd N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ K ⁢ K gcd N ↔ K gcd M ⋅ N K gcd N ∥ K
46 43 44 20 22 45 syl112anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ K ⁢ K gcd N ↔ K gcd M ⋅ N K gcd N ∥ K
47 29 46 mpbid ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ∥ K
48 nn0abscl ⊢ M ∈ ℤ → M ∈ ℕ 0
49 2 48 syl ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℕ 0
50 49 nn0zd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℤ
51 dvdsmultr2 ⊢ K gcd M ⋅ N ∈ ℤ ∧ M ∈ ℤ ∧ K ∈ ℤ → K gcd M ⋅ N ∥ K → K gcd M ⋅ N ∥ M ⁢ K
52 6 50 1 51 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ K → K gcd M ⋅ N ∥ M ⁢ K
53 26 52 mpd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K
54 50 3 zmulcld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⋅ N ∈ ℤ
55 25 simprd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⋅ N
56 iddvds ⊢ M ∈ ℤ → M ∥ M
57 2 56 syl ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∥ M
58 dvdsabsb ⊢ M ∈ ℤ ∧ M ∈ ℤ → M ∥ M ↔ M ∥ M
59 2 2 58 syl2anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∥ M ↔ M ∥ M
60 57 59 mpbid ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∥ M
61 dvdsmulc ⊢ M ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∥ M → M ⋅ N ∥ M ⋅ N
62 2 50 3 61 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∥ M → M ⋅ N ∥ M ⋅ N
63 60 62 mpd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⋅ N ∥ M ⋅ N
64 6 4 54 55 63 dvdstrd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⋅ N
65 50 1 zmulcld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⁢ K ∈ ℤ
66 dvdsgcd ⊢ K gcd M ⋅ N ∈ ℤ ∧ M ⁢ K ∈ ℤ ∧ M ⋅ N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K ∧ K gcd M ⋅ N ∥ M ⋅ N → K gcd M ⋅ N ∥ M ⁢ K gcd M ⋅ N
67 6 65 54 66 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K ∧ K gcd M ⋅ N ∥ M ⋅ N → K gcd M ⋅ N ∥ M ⁢ K gcd M ⋅ N
68 53 64 67 mp2and ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K gcd M ⋅ N
69 18 nn0red ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∈ ℝ
70 18 nn0ge0d ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → 0 ≤ K gcd N
71 69 70 absidd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N = K gcd N
72 71 oveq2d ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⁢ K gcd N = M ⁢ K gcd N
73 2 zcnd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ∈ ℂ
74 18 nn0cnd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd N ∈ ℂ
75 73 74 absmuld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⁢ K gcd N = M ⁢ K gcd N
76 mulgcd ⊢ M ∈ ℕ 0 ∧ K ∈ ℤ ∧ N ∈ ℤ → M ⁢ K gcd M ⋅ N = M ⁢ K gcd N
77 49 1 3 76 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⁢ K gcd M ⋅ N = M ⁢ K gcd N
78 72 75 77 3eqtr4d ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⁢ K gcd N = M ⁢ K gcd M ⋅ N
79 68 78 breqtrrd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K gcd N
80 2 19 zmulcld ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → M ⁢ K gcd N ∈ ℤ
81 dvdsabsb ⊢ K gcd M ⋅ N ∈ ℤ ∧ M ⁢ K gcd N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K gcd N ↔ K gcd M ⋅ N ∥ M ⁢ K gcd N
82 6 80 81 syl2anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K gcd N ↔ K gcd M ⋅ N ∥ M ⁢ K gcd N
83 79 82 mpbird ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ M ⁢ K gcd N
84 83 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N ∥ M ⁢ K gcd N
85 23 84 eqbrtrd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ M ⁢ K gcd N
86 2 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → M ∈ ℤ
87 dvdsmulcr ⊢ K gcd M ⋅ N K gcd N ∈ ℤ ∧ M ∈ ℤ ∧ K gcd N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ M ⁢ K gcd N ↔ K gcd M ⋅ N K gcd N ∥ M
88 43 86 20 22 87 syl112anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ M ⁢ K gcd N ↔ K gcd M ⋅ N K gcd N ∥ M
89 85 88 mpbid ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ∥ M
90 dvdsgcd ⊢ K gcd M ⋅ N K gcd N ∈ ℤ ∧ K ∈ ℤ ∧ M ∈ ℤ → K gcd M ⋅ N K gcd N ∥ K ∧ K gcd M ⋅ N K gcd N ∥ M → K gcd M ⋅ N K gcd N ∥ K gcd M
91 43 44 86 90 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ∥ K ∧ K gcd M ⋅ N K gcd N ∥ M → K gcd M ⋅ N K gcd N ∥ K gcd M
92 47 89 91 mp2and ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ∥ K gcd M
93 11 nn0zd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ∈ ℤ
94 93 adantr ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ∈ ℤ
95 dvdsmulc ⊢ K gcd M ⋅ N K gcd N ∈ ℤ ∧ K gcd M ∈ ℤ ∧ K gcd N ∈ ℤ → K gcd M ⋅ N K gcd N ∥ K gcd M → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ K gcd M ⁢ K gcd N
96 43 94 20 95 syl3anc ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ∥ K gcd M → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ K gcd M ⁢ K gcd N
97 92 96 mpd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N K gcd N ⁢ K gcd N ∥ K gcd M ⁢ K gcd N
98 23 97 eqbrtrrd ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ ∧ K gcd N ≠ 0 → K gcd M ⋅ N ∥ K gcd M ⁢ K gcd N
99 15 98 pm2.61dane ⊢ K ∈ ℤ ∧ M ∈ ℤ ∧ N ∈ ℤ → K gcd M ⋅ N ∥ K gcd M ⁢ K gcd N