Theorem qredeq 12748

Description: Two equal reduced fractions have the same numerator and denominator. (Contributed by Jeff Hankins, 29-Sep-2013.)

Assertion

Ref	Expression
qredeq	|- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) /\ ( M / N ) = ( P / Q ) ) -> ( M = P /\ N = Q ) )

Proof of Theorem qredeq

Step	Hyp	Ref	Expression
1		zcn 9545	. . . . . . . . . 10 |- ( M e. ZZ -> M e. CC )
2	1	adantr 276	. . . . . . . . 9 |- ( ( M e. ZZ /\ N e. NN ) -> M e. CC )
3		nncn 9210	. . . . . . . . . 10 |- ( N e. NN -> N e. CC )
4	3	adantl 277	. . . . . . . . 9 |- ( ( M e. ZZ /\ N e. NN ) -> N e. CC )
5		nnap0 9231	. . . . . . . . . 10 |- ( N e. NN -> N # 0 )
6	5	adantl 277	. . . . . . . . 9 |- ( ( M e. ZZ /\ N e. NN ) -> N # 0 )
7	2, 4, 6	divclapd 9029	. . . . . . . 8 |- ( ( M e. ZZ /\ N e. NN ) -> ( M / N ) e. CC )
8	7	3adant3 1044	. . . . . . 7 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> ( M / N ) e. CC )
9	8	adantr 276	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( M / N ) e. CC )
10		zcn 9545	. . . . . . . . . 10 |- ( P e. ZZ -> P e. CC )
11	10	adantr 276	. . . . . . . . 9 |- ( ( P e. ZZ /\ Q e. NN ) -> P e. CC )
12		nncn 9210	. . . . . . . . . 10 |- ( Q e. NN -> Q e. CC )
13	12	adantl 277	. . . . . . . . 9 |- ( ( P e. ZZ /\ Q e. NN ) -> Q e. CC )
14		nnap0 9231	. . . . . . . . . 10 |- ( Q e. NN -> Q # 0 )
15	14	adantl 277	. . . . . . . . 9 |- ( ( P e. ZZ /\ Q e. NN ) -> Q # 0 )
16	11, 13, 15	divclapd 9029	. . . . . . . 8 |- ( ( P e. ZZ /\ Q e. NN ) -> ( P / Q ) e. CC )
17	16	3adant3 1044	. . . . . . 7 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> ( P / Q ) e. CC )
18	17	adantl 277	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( P / Q ) e. CC )
19	3	3ad2ant2 1046	. . . . . . 7 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> N e. CC )
20	19	adantr 276	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> N e. CC )
21	5	3ad2ant2 1046	. . . . . . 7 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> N # 0 )
22	21	adantr 276	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> N # 0 )
23	9, 18, 20, 22	mulcanapd 8900	. . . . 5 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( N x. ( M / N ) ) = ( N x. ( P / Q ) ) <-> ( M / N ) = ( P / Q ) ) )
24	2, 4, 6	divcanap2d 9031	. . . . . . . 8 |- ( ( M e. ZZ /\ N e. NN ) -> ( N x. ( M / N ) ) = M )
25	24	3adant3 1044	. . . . . . 7 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> ( N x. ( M / N ) ) = M )
26	25	adantr 276	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( N x. ( M / N ) ) = M )
27	26	eqeq1d 2240	. . . . 5 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( N x. ( M / N ) ) = ( N x. ( P / Q ) ) <-> M = ( N x. ( P / Q ) ) ) )
28	23, 27	bitr3d 190	. . . 4 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M / N ) = ( P / Q ) <-> M = ( N x. ( P / Q ) ) ) )
29	1	3ad2ant1 1045	. . . . . . 7 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> M e. CC )
30	29	adantr 276	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> M e. CC )
31		mulcl 8219	. . . . . . 7 |- ( ( N e. CC /\ ( P / Q ) e. CC ) -> ( N x. ( P / Q ) ) e. CC )
32	19, 17, 31	syl2an 289	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( N x. ( P / Q ) ) e. CC )
33	12	3ad2ant2 1046	. . . . . . 7 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> Q e. CC )
34	33	adantl 277	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> Q e. CC )
35	14	3ad2ant2 1046	. . . . . . 7 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> Q # 0 )
36	35	adantl 277	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> Q # 0 )
37	30, 32, 34, 36	mulcanap2d 8901	. . . . 5 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M x. Q ) = ( ( N x. ( P / Q ) ) x. Q ) <-> M = ( N x. ( P / Q ) ) ) )
38	20, 18, 34	mulassd 8262	. . . . . . 7 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( N x. ( P / Q ) ) x. Q ) = ( N x. ( ( P / Q ) x. Q ) ) )
39	11, 13, 15	divcanap1d 9030	. . . . . . . . . 10 |- ( ( P e. ZZ /\ Q e. NN ) -> ( ( P / Q ) x. Q ) = P )
40	39	3adant3 1044	. . . . . . . . 9 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> ( ( P / Q ) x. Q ) = P )
41	40	adantl 277	. . . . . . . 8 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( P / Q ) x. Q ) = P )
42	41	oveq2d 6044	. . . . . . 7 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( N x. ( ( P / Q ) x. Q ) ) = ( N x. P ) )
43	38, 42	eqtrd 2264	. . . . . 6 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( N x. ( P / Q ) ) x. Q ) = ( N x. P ) )
44	43	eqeq2d 2243	. . . . 5 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M x. Q ) = ( ( N x. ( P / Q ) ) x. Q ) <-> ( M x. Q ) = ( N x. P ) ) )
45	37, 44	bitr3d 190	. . . 4 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( M = ( N x. ( P / Q ) ) <-> ( M x. Q ) = ( N x. P ) ) )
46	28, 45	bitrd 188	. . 3 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M / N ) = ( P / Q ) <-> ( M x. Q ) = ( N x. P ) ) )
47		nnz 9559	. . . . . . . . . 10 |- ( N e. NN -> N e. ZZ )
48	47	3ad2ant2 1046	. . . . . . . . 9 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> N e. ZZ )
49		simp2 1025	. . . . . . . . 9 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> Q e. NN )
50	48, 49	anim12i 338	. . . . . . . 8 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( N e. ZZ /\ Q e. NN ) )
51	50	adantr 276	. . . . . . 7 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N e. ZZ /\ Q e. NN ) )
52	48	adantr 276	. . . . . . . . . 10 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> N e. ZZ )
53		simpl1 1027	. . . . . . . . . 10 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> M e. ZZ )
54		nnz 9559	. . . . . . . . . . . 12 |- ( Q e. NN -> Q e. ZZ )
55	54	3ad2ant2 1046	. . . . . . . . . . 11 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> Q e. ZZ )
56	55	adantl 277	. . . . . . . . . 10 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> Q e. ZZ )
57	52, 53, 56	3jca 1204	. . . . . . . . 9 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( N e. ZZ /\ M e. ZZ /\ Q e. ZZ ) )
58	57	adantr 276	. . . . . . . 8 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N e. ZZ /\ M e. ZZ /\ Q e. ZZ ) )
59		simp1 1024	. . . . . . . . . . . 12 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> P e. ZZ )
60		dvdsmul1 12454	. . . . . . . . . . . 12 |- ( ( N e. ZZ /\ P e. ZZ ) -> N || ( N x. P ) )
61	48, 59, 60	syl2an 289	. . . . . . . . . . 11 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> N || ( N x. P ) )
62	61	adantr 276	. . . . . . . . . 10 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> N || ( N x. P ) )
63		simpr 110	. . . . . . . . . 10 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( M x. Q ) = ( N x. P ) )
64	62, 63	breqtrrd 4121	. . . . . . . . 9 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> N || ( M x. Q ) )
65		gcdcom 12624	. . . . . . . . . . . . . 14 |- ( ( N e. ZZ /\ M e. ZZ ) -> ( N gcd M ) = ( M gcd N ) )
66	47, 65	sylan 283	. . . . . . . . . . . . 13 |- ( ( N e. NN /\ M e. ZZ ) -> ( N gcd M ) = ( M gcd N ) )
67	66	ancoms 268	. . . . . . . . . . . 12 |- ( ( M e. ZZ /\ N e. NN ) -> ( N gcd M ) = ( M gcd N ) )
68	67	3adant3 1044	. . . . . . . . . . 11 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> ( N gcd M ) = ( M gcd N ) )
69		simp3 1026	. . . . . . . . . . 11 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> ( M gcd N ) = 1 )
70	68, 69	eqtrd 2264	. . . . . . . . . 10 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> ( N gcd M ) = 1 )
71	70	ad2antrr 488	. . . . . . . . 9 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N gcd M ) = 1 )
72	64, 71	jca 306	. . . . . . . 8 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N || ( M x. Q ) /\ ( N gcd M ) = 1 ) )
73		coprmdvds 12744	. . . . . . . 8 |- ( ( N e. ZZ /\ M e. ZZ /\ Q e. ZZ ) -> ( ( N || ( M x. Q ) /\ ( N gcd M ) = 1 ) -> N || Q ) )
74	58, 72, 73	sylc 62	. . . . . . 7 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> N || Q )
75		dvdsle 12485	. . . . . . 7 |- ( ( N e. ZZ /\ Q e. NN ) -> ( N || Q -> N <_ Q ) )
76	51, 74, 75	sylc 62	. . . . . 6 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> N <_ Q )
77		simp2 1025	. . . . . . . . . 10 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> N e. NN )
78	55, 77	anim12i 338	. . . . . . . . 9 |- ( ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) /\ ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) ) -> ( Q e. ZZ /\ N e. NN ) )
79	78	ancoms 268	. . . . . . . 8 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( Q e. ZZ /\ N e. NN ) )
80	79	adantr 276	. . . . . . 7 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( Q e. ZZ /\ N e. NN ) )
81		simpr1 1030	. . . . . . . . . 10 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> P e. ZZ )
82	56, 81, 52	3jca 1204	. . . . . . . . 9 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( Q e. ZZ /\ P e. ZZ /\ N e. ZZ ) )
83	82	adantr 276	. . . . . . . 8 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( Q e. ZZ /\ P e. ZZ /\ N e. ZZ ) )
84		simp1 1024	. . . . . . . . . . . 12 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> M e. ZZ )
85		dvdsmul2 12455	. . . . . . . . . . . 12 |- ( ( M e. ZZ /\ Q e. ZZ ) -> Q || ( M x. Q ) )
86	84, 55, 85	syl2an 289	. . . . . . . . . . 11 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> Q || ( M x. Q ) )
87	86	adantr 276	. . . . . . . . . 10 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> Q || ( M x. Q ) )
88	10	3ad2ant1 1045	. . . . . . . . . . . . 13 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> P e. CC )
89		mulcom 8221	. . . . . . . . . . . . 13 |- ( ( N e. CC /\ P e. CC ) -> ( N x. P ) = ( P x. N ) )
90	19, 88, 89	syl2an 289	. . . . . . . . . . . 12 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( N x. P ) = ( P x. N ) )
91	90	adantr 276	. . . . . . . . . . 11 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N x. P ) = ( P x. N ) )
92	63, 91	eqtrd 2264	. . . . . . . . . 10 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( M x. Q ) = ( P x. N ) )
93	87, 92	breqtrd 4119	. . . . . . . . 9 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> Q || ( P x. N ) )
94		gcdcom 12624	. . . . . . . . . . . . . 14 |- ( ( Q e. ZZ /\ P e. ZZ ) -> ( Q gcd P ) = ( P gcd Q ) )
95	54, 94	sylan 283	. . . . . . . . . . . . 13 |- ( ( Q e. NN /\ P e. ZZ ) -> ( Q gcd P ) = ( P gcd Q ) )
96	95	ancoms 268	. . . . . . . . . . . 12 |- ( ( P e. ZZ /\ Q e. NN ) -> ( Q gcd P ) = ( P gcd Q ) )
97	96	3adant3 1044	. . . . . . . . . . 11 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> ( Q gcd P ) = ( P gcd Q ) )
98		simp3 1026	. . . . . . . . . . 11 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> ( P gcd Q ) = 1 )
99	97, 98	eqtrd 2264	. . . . . . . . . 10 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> ( Q gcd P ) = 1 )
100	99	ad2antlr 489	. . . . . . . . 9 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( Q gcd P ) = 1 )
101	93, 100	jca 306	. . . . . . . 8 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( Q || ( P x. N ) /\ ( Q gcd P ) = 1 ) )
102		coprmdvds 12744	. . . . . . . 8 |- ( ( Q e. ZZ /\ P e. ZZ /\ N e. ZZ ) -> ( ( Q || ( P x. N ) /\ ( Q gcd P ) = 1 ) -> Q || N ) )
103	83, 101, 102	sylc 62	. . . . . . 7 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> Q || N )
104		dvdsle 12485	. . . . . . 7 |- ( ( Q e. ZZ /\ N e. NN ) -> ( Q || N -> Q <_ N ) )
105	80, 103, 104	sylc 62	. . . . . 6 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> Q <_ N )
106		nnre 9209	. . . . . . . . 9 |- ( N e. NN -> N e. RR )
107	106	3ad2ant2 1046	. . . . . . . 8 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> N e. RR )
108	107	ad2antrr 488	. . . . . . 7 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> N e. RR )
109		nnre 9209	. . . . . . . . 9 |- ( Q e. NN -> Q e. RR )
110	109	3ad2ant2 1046	. . . . . . . 8 |- ( ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) -> Q e. RR )
111	110	ad2antlr 489	. . . . . . 7 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> Q e. RR )
112	108, 111	letri3d 8354	. . . . . 6 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N = Q <-> ( N <_ Q /\ Q <_ N ) ) )
113	76, 105, 112	mpbir2and 953	. . . . 5 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> N = Q )
114		oveq2 6036	. . . . . . . . . 10 |- ( N = Q -> ( M x. N ) = ( M x. Q ) )
115	114	eqeq1d 2240	. . . . . . . . 9 |- ( N = Q -> ( ( M x. N ) = ( N x. P ) <-> ( M x. Q ) = ( N x. P ) ) )
116	115	anbi2d 464	. . . . . . . 8 |- ( N = Q -> ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. N ) = ( N x. P ) ) <-> ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) ) )
117		mulcom 8221	. . . . . . . . . . . . . 14 |- ( ( M e. CC /\ N e. CC ) -> ( M x. N ) = ( N x. M ) )
118	1, 3, 117	syl2an 289	. . . . . . . . . . . . 13 |- ( ( M e. ZZ /\ N e. NN ) -> ( M x. N ) = ( N x. M ) )
119	118	3adant3 1044	. . . . . . . . . . . 12 |- ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) -> ( M x. N ) = ( N x. M ) )
120	119	adantr 276	. . . . . . . . . . 11 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( M x. N ) = ( N x. M ) )
121	120	eqeq1d 2240	. . . . . . . . . 10 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M x. N ) = ( N x. P ) <-> ( N x. M ) = ( N x. P ) ) )
122	88	adantl 277	. . . . . . . . . . 11 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> P e. CC )
123	30, 122, 20, 22	mulcanapd 8900	. . . . . . . . . 10 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( N x. M ) = ( N x. P ) <-> M = P ) )
124	121, 123	bitrd 188	. . . . . . . . 9 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M x. N ) = ( N x. P ) <-> M = P ) )
125	124	biimpa 296	. . . . . . . 8 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. N ) = ( N x. P ) ) -> M = P )
126	116, 125	biimtrrdi 164	. . . . . . 7 |- ( N = Q -> ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> M = P ) )
127	126	com12 30	. . . . . 6 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N = Q -> M = P ) )
128	127	ancrd 326	. . . . 5 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( N = Q -> ( M = P /\ N = Q ) ) )
129	113, 128	mpd 13	. . . 4 |- ( ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) /\ ( M x. Q ) = ( N x. P ) ) -> ( M = P /\ N = Q ) )
130	129	ex 115	. . 3 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M x. Q ) = ( N x. P ) -> ( M = P /\ N = Q ) ) )
131	46, 130	sylbid 150	. 2 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) ) -> ( ( M / N ) = ( P / Q ) -> ( M = P /\ N = Q ) ) )
132	131	3impia 1227	1 |- ( ( ( M e. ZZ /\ N e. NN /\ ( M gcd N ) = 1 ) /\ ( P e. ZZ /\ Q e. NN /\ ( P gcd Q ) = 1 ) /\ ( M / N ) = ( P / Q ) ) -> ( M = P /\ N = Q ) )

Syntax hints:   -> wi 4   /\ wa 104   /\ w3a 1005   = wceq 1398   e. wcel 2202   class class class wbr 4093  (class class class)co 6028   CCcc 8090   RRcr 8091   0cc0 8092   1c1 8093   x. cmul 8097   <_ cle 8274   # cap 8820   / cdiv 8911   NNcn 9202   ZZcz 9540   || cdvds 12428   gcd cgcd 12604

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4209  ax-sep 4212  ax-nul 4220  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641  ax-iinf 4692  ax-cnex 8183  ax-resscn 8184  ax-1cn 8185  ax-1re 8186  ax-icn 8187  ax-addcl 8188  ax-addrcl 8189  ax-mulcl 8190  ax-mulrcl 8191  ax-addcom 8192  ax-mulcom 8193  ax-addass 8194  ax-mulass 8195  ax-distr 8196  ax-i2m1 8197  ax-0lt1 8198  ax-1rid 8199  ax-0id 8200  ax-rnegex 8201  ax-precex 8202  ax-cnre 8203  ax-pre-ltirr 8204  ax-pre-ltwlin 8205  ax-pre-lttrn 8206  ax-pre-apti 8207  ax-pre-ltadd 8208  ax-pre-mulgt0 8209  ax-pre-mulext 8210  ax-arch 8211  ax-caucvg 8212

This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ne 2404  df-nel 2499  df-ral 2516  df-rex 2517  df-reu 2518  df-rmo 2519  df-rab 2520  df-v 2805  df-sbc 3033  df-csb 3129  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-nul 3497  df-if 3608  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-int 3934  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-tr 4193  df-id 4396  df-po 4399  df-iso 4400  df-iord 4469  df-on 4471  df-ilim 4472  df-suc 4474  df-iom 4695  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-f1 5338  df-fo 5339  df-f1o 5340  df-fv 5341  df-riota 5981  df-ov 6031  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313  df-recs 6514  df-frec 6600  df-sup 7243  df-pnf 8275  df-mnf 8276  df-xr 8277  df-ltxr 8278  df-le 8279  df-sub 8411  df-neg 8412  df-reap 8814  df-ap 8821  df-div 8912  df-inn 9203  df-2 9261  df-3 9262  df-4 9263  df-n0 9462  df-z 9541  df-uz 9817  df-q 9915  df-rp 9950  df-fz 10306  df-fzo 10440  df-fl 10593  df-mod 10648  df-seqfrec 10773  df-exp 10864  df-cj 11482  df-re 11483  df-im 11484  df-rsqrt 11638  df-abs 11639  df-dvds 12429  df-gcd 12605

This theorem is referenced by:  qredeu  12749