Theorem mumullem2 24106

Description: Lemma for mumul 24107. The product of two coprime squarefree numbers is squarefree. (Contributed by Mario Carneiro, 3-Oct-2014.)

Assertion

Ref	Expression
mumullem2	|- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ ( ( mmu ` A ) =/= 0 /\ ( mmu ` B ) =/= 0 ) ) -> ( mmu ` ( A x. B ) ) =/= 0 )

Proof of Theorem mumullem2

Dummy variable p is distinct from all other variables.

Step	Hyp	Ref	Expression
1		r19.26 2952	. . . 4 |- ( A. p e. Prime ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) <-> ( A. p e. Prime ( p pCnt A ) <_ 1 /\ A. p e. Prime ( p pCnt B ) <_ 1 ) )
2		simpr 462	. . . . . . . . . 10 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> p e. Prime )
3		simpl1 1008	. . . . . . . . . 10 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> A e. NN )
4	2, 3	pccld 14800	. . . . . . . . 9 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt A ) e. NN0 )
5	4	nn0red 10934	. . . . . . . 8 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt A ) e. RR )
6		simpl2 1009	. . . . . . . . . 10 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> B e. NN )
7	2, 6	pccld 14800	. . . . . . . . 9 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt B ) e. NN0 )
8	7	nn0red 10934	. . . . . . . 8 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt B ) e. RR )
9		1red 9666	. . . . . . . 8 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> 1 e. RR )
10		le2add 10104	. . . . . . . 8 |- ( ( ( ( p pCnt A ) e. RR /\ ( p pCnt B ) e. RR ) /\ ( 1 e. RR /\ 1 e. RR ) ) -> ( ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) -> ( ( p pCnt A ) + ( p pCnt B ) ) <_ ( 1 + 1 ) ) )
11	5, 8, 9, 9, 10	syl22anc 1265	. . . . . . 7 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) -> ( ( p pCnt A ) + ( p pCnt B ) ) <_ ( 1 + 1 ) ) )
12		ax-1ne0 9616	. . . . . . . . . . . 12 |- 1 =/= 0
13		simpl3 1010	. . . . . . . . . . . . . . . 16 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( A gcd B ) = 1 )
14	13	oveq2d 6322	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt ( A gcd B ) ) = ( p pCnt 1 ) )
15	3	nnzd 11047	. . . . . . . . . . . . . . . 16 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> A e. ZZ )
16	6	nnzd 11047	. . . . . . . . . . . . . . . 16 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> B e. ZZ )
17		pcgcd 14827	. . . . . . . . . . . . . . . 16 |- ( ( p e. Prime /\ A e. ZZ /\ B e. ZZ ) -> ( p pCnt ( A gcd B ) ) = if ( ( p pCnt A ) <_ ( p pCnt B ) , ( p pCnt A ) , ( p pCnt B ) ) )
18	2, 15, 16, 17	syl3anc 1264	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt ( A gcd B ) ) = if ( ( p pCnt A ) <_ ( p pCnt B ) , ( p pCnt A ) , ( p pCnt B ) ) )
19		pc1 14805	. . . . . . . . . . . . . . . 16 |- ( p e. Prime -> ( p pCnt 1 ) = 0 )
20	19	adantl 467	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt 1 ) = 0 )
21	14, 18, 20	3eqtr3d 2471	. . . . . . . . . . . . . 14 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> if ( ( p pCnt A ) <_ ( p pCnt B ) , ( p pCnt A ) , ( p pCnt B ) ) = 0 )
22		ifid 3948	. . . . . . . . . . . . . . . 16 |- if ( ( p pCnt A ) <_ ( p pCnt B ) , 1 , 1 ) = 1
23		ifeq12 3928	. . . . . . . . . . . . . . . 16 |- ( ( 1 = ( p pCnt A ) /\ 1 = ( p pCnt B ) ) -> if ( ( p pCnt A ) <_ ( p pCnt B ) , 1 , 1 ) = if ( ( p pCnt A ) <_ ( p pCnt B ) , ( p pCnt A ) , ( p pCnt B ) ) )
24	22, 23	syl5eqr 2477	. . . . . . . . . . . . . . 15 |- ( ( 1 = ( p pCnt A ) /\ 1 = ( p pCnt B ) ) -> 1 = if ( ( p pCnt A ) <_ ( p pCnt B ) , ( p pCnt A ) , ( p pCnt B ) ) )
25	24	eqeq1d 2424	. . . . . . . . . . . . . 14 |- ( ( 1 = ( p pCnt A ) /\ 1 = ( p pCnt B ) ) -> ( 1 = 0 <-> if ( ( p pCnt A ) <_ ( p pCnt B ) , ( p pCnt A ) , ( p pCnt B ) ) = 0 ) )
26	21, 25	syl5ibrcom 225	. . . . . . . . . . . . 13 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( 1 = ( p pCnt A ) /\ 1 = ( p pCnt B ) ) -> 1 = 0 ) )
27	26	necon3ad 2630	. . . . . . . . . . . 12 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( 1 =/= 0 -> -. ( 1 = ( p pCnt A ) /\ 1 = ( p pCnt B ) ) ) )
28	12, 27	mpi 20	. . . . . . . . . . 11 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> -. ( 1 = ( p pCnt A ) /\ 1 = ( p pCnt B ) ) )
29		ax-1cn 9605	. . . . . . . . . . . . 13 |- 1 e. CC
30	5	recnd 9677	. . . . . . . . . . . . 13 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt A ) e. CC )
31		subeq0 9908	. . . . . . . . . . . . 13 |- ( ( 1 e. CC /\ ( p pCnt A ) e. CC ) -> ( ( 1 - ( p pCnt A ) ) = 0 <-> 1 = ( p pCnt A ) ) )
32	29, 30, 31	sylancr 667	. . . . . . . . . . . 12 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( 1 - ( p pCnt A ) ) = 0 <-> 1 = ( p pCnt A ) ) )
33	8	recnd 9677	. . . . . . . . . . . . 13 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt B ) e. CC )
34		subeq0 9908	. . . . . . . . . . . . 13 |- ( ( 1 e. CC /\ ( p pCnt B ) e. CC ) -> ( ( 1 - ( p pCnt B ) ) = 0 <-> 1 = ( p pCnt B ) ) )
35	29, 33, 34	sylancr 667	. . . . . . . . . . . 12 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( 1 - ( p pCnt B ) ) = 0 <-> 1 = ( p pCnt B ) ) )
36	32, 35	anbi12d 715	. . . . . . . . . . 11 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) <-> ( 1 = ( p pCnt A ) /\ 1 = ( p pCnt B ) ) ) )
37	28, 36	mtbird 302	. . . . . . . . . 10 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> -. ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) )
38	37	adantr 466	. . . . . . . . 9 |- ( ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) /\ ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) -> -. ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) )
39		eqcom 2431	. . . . . . . . . . 11 |- ( ( 1 + 1 ) = ( ( p pCnt A ) + ( p pCnt B ) ) <-> ( ( p pCnt A ) + ( p pCnt B ) ) = ( 1 + 1 ) )
40		1re 9650	. . . . . . . . . . . . . . . . . 18 |- 1 e. RR
41	40, 40	readdcli 9664	. . . . . . . . . . . . . . . . 17 |- ( 1 + 1 ) e. RR
42	41	recni 9663	. . . . . . . . . . . . . . . 16 |- ( 1 + 1 ) e. CC
43	4, 7	nn0addcld 10937	. . . . . . . . . . . . . . . . . 18 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( p pCnt A ) + ( p pCnt B ) ) e. NN0 )
44	43	nn0red 10934	. . . . . . . . . . . . . . . . 17 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( p pCnt A ) + ( p pCnt B ) ) e. RR )
45	44	recnd 9677	. . . . . . . . . . . . . . . 16 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( p pCnt A ) + ( p pCnt B ) ) e. CC )
46		subeq0 9908	. . . . . . . . . . . . . . . 16 |- ( ( ( 1 + 1 ) e. CC /\ ( ( p pCnt A ) + ( p pCnt B ) ) e. CC ) -> ( ( ( 1 + 1 ) - ( ( p pCnt A ) + ( p pCnt B ) ) ) = 0 <-> ( 1 + 1 ) = ( ( p pCnt A ) + ( p pCnt B ) ) ) )
47	42, 45, 46	sylancr 667	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( 1 + 1 ) - ( ( p pCnt A ) + ( p pCnt B ) ) ) = 0 <-> ( 1 + 1 ) = ( ( p pCnt A ) + ( p pCnt B ) ) ) )
48	47, 39	syl6bb 264	. . . . . . . . . . . . . 14 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( 1 + 1 ) - ( ( p pCnt A ) + ( p pCnt B ) ) ) = 0 <-> ( ( p pCnt A ) + ( p pCnt B ) ) = ( 1 + 1 ) ) )
49	9	recnd 9677	. . . . . . . . . . . . . . . 16 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> 1 e. CC )
50	49, 49, 30, 33	addsub4d 10041	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( 1 + 1 ) - ( ( p pCnt A ) + ( p pCnt B ) ) ) = ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) )
51	50	eqeq1d 2424	. . . . . . . . . . . . . 14 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( 1 + 1 ) - ( ( p pCnt A ) + ( p pCnt B ) ) ) = 0 <-> ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 ) )
52	48, 51	bitr3d 258	. . . . . . . . . . . . 13 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) = ( 1 + 1 ) <-> ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 ) )
53	52	adantr 466	. . . . . . . . . . . 12 |- ( ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) /\ ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) = ( 1 + 1 ) <-> ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 ) )
54		subge0 10135	. . . . . . . . . . . . . . . 16 |- ( ( 1 e. RR /\ ( p pCnt A ) e. RR ) -> ( 0 <_ ( 1 - ( p pCnt A ) ) <-> ( p pCnt A ) <_ 1 ) )
55	40, 5, 54	sylancr 667	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( 0 <_ ( 1 - ( p pCnt A ) ) <-> ( p pCnt A ) <_ 1 ) )
56		subge0 10135	. . . . . . . . . . . . . . . 16 |- ( ( 1 e. RR /\ ( p pCnt B ) e. RR ) -> ( 0 <_ ( 1 - ( p pCnt B ) ) <-> ( p pCnt B ) <_ 1 ) )
57	40, 8, 56	sylancr 667	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( 0 <_ ( 1 - ( p pCnt B ) ) <-> ( p pCnt B ) <_ 1 ) )
58	55, 57	anbi12d 715	. . . . . . . . . . . . . 14 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( 0 <_ ( 1 - ( p pCnt A ) ) /\ 0 <_ ( 1 - ( p pCnt B ) ) ) <-> ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) )
59		resubcl 9946	. . . . . . . . . . . . . . . 16 |- ( ( 1 e. RR /\ ( p pCnt A ) e. RR ) -> ( 1 - ( p pCnt A ) ) e. RR )
60	40, 5, 59	sylancr 667	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( 1 - ( p pCnt A ) ) e. RR )
61		resubcl 9946	. . . . . . . . . . . . . . . 16 |- ( ( 1 e. RR /\ ( p pCnt B ) e. RR ) -> ( 1 - ( p pCnt B ) ) e. RR )
62	40, 8, 61	sylancr 667	. . . . . . . . . . . . . . 15 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( 1 - ( p pCnt B ) ) e. RR )
63		add20 10134	. . . . . . . . . . . . . . . . 17 |- ( ( ( ( 1 - ( p pCnt A ) ) e. RR /\ 0 <_ ( 1 - ( p pCnt A ) ) ) /\ ( ( 1 - ( p pCnt B ) ) e. RR /\ 0 <_ ( 1 - ( p pCnt B ) ) ) ) -> ( ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) )
64	63	an4s 833	. . . . . . . . . . . . . . . 16 |- ( ( ( ( 1 - ( p pCnt A ) ) e. RR /\ ( 1 - ( p pCnt B ) ) e. RR ) /\ ( 0 <_ ( 1 - ( p pCnt A ) ) /\ 0 <_ ( 1 - ( p pCnt B ) ) ) ) -> ( ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) )
65	64	ex 435	. . . . . . . . . . . . . . 15 |- ( ( ( 1 - ( p pCnt A ) ) e. RR /\ ( 1 - ( p pCnt B ) ) e. RR ) -> ( ( 0 <_ ( 1 - ( p pCnt A ) ) /\ 0 <_ ( 1 - ( p pCnt B ) ) ) -> ( ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) ) )
66	60, 62, 65	syl2anc 665	. . . . . . . . . . . . . 14 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( 0 <_ ( 1 - ( p pCnt A ) ) /\ 0 <_ ( 1 - ( p pCnt B ) ) ) -> ( ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) ) )
67	58, 66	sylbird 238	. . . . . . . . . . . . 13 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) -> ( ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) ) )
68	67	imp 430	. . . . . . . . . . . 12 |- ( ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) /\ ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) -> ( ( ( 1 - ( p pCnt A ) ) + ( 1 - ( p pCnt B ) ) ) = 0 <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) )
69	53, 68	bitrd 256	. . . . . . . . . . 11 |- ( ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) /\ ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) = ( 1 + 1 ) <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) )
70	39, 69	syl5bb 260	. . . . . . . . . 10 |- ( ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) /\ ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) -> ( ( 1 + 1 ) = ( ( p pCnt A ) + ( p pCnt B ) ) <-> ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) )
71	70	necon3abid 2666	. . . . . . . . 9 |- ( ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) /\ ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) -> ( ( 1 + 1 ) =/= ( ( p pCnt A ) + ( p pCnt B ) ) <-> -. ( ( 1 - ( p pCnt A ) ) = 0 /\ ( 1 - ( p pCnt B ) ) = 0 ) ) )
72	38, 71	mpbird 235	. . . . . . . 8 |- ( ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) /\ ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) ) -> ( 1 + 1 ) =/= ( ( p pCnt A ) + ( p pCnt B ) ) )
73	72	ex 435	. . . . . . 7 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) -> ( 1 + 1 ) =/= ( ( p pCnt A ) + ( p pCnt B ) ) ) )
74	11, 73	jcad 535	. . . . . 6 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) <_ ( 1 + 1 ) /\ ( 1 + 1 ) =/= ( ( p pCnt A ) + ( p pCnt B ) ) ) ) )
75		nnz 10967	. . . . . . . . . . 11 |- ( A e. NN -> A e. ZZ )
76		nnne0 10650	. . . . . . . . . . 11 |- ( A e. NN -> A =/= 0 )
77	75, 76	jca 534	. . . . . . . . . 10 |- ( A e. NN -> ( A e. ZZ /\ A =/= 0 ) )
78	3, 77	syl 17	. . . . . . . . 9 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( A e. ZZ /\ A =/= 0 ) )
79		nnz 10967	. . . . . . . . . . 11 |- ( B e. NN -> B e. ZZ )
80		nnne0 10650	. . . . . . . . . . 11 |- ( B e. NN -> B =/= 0 )
81	79, 80	jca 534	. . . . . . . . . 10 |- ( B e. NN -> ( B e. ZZ /\ B =/= 0 ) )
82	6, 81	syl 17	. . . . . . . . 9 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( B e. ZZ /\ B =/= 0 ) )
83		pcmul 14801	. . . . . . . . 9 |- ( ( p e. Prime /\ ( A e. ZZ /\ A =/= 0 ) /\ ( B e. ZZ /\ B =/= 0 ) ) -> ( p pCnt ( A x. B ) ) = ( ( p pCnt A ) + ( p pCnt B ) ) )
84	2, 78, 82, 83	syl3anc 1264	. . . . . . . 8 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( p pCnt ( A x. B ) ) = ( ( p pCnt A ) + ( p pCnt B ) ) )
85	84	breq1d 4433	. . . . . . 7 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( p pCnt ( A x. B ) ) <_ 1 <-> ( ( p pCnt A ) + ( p pCnt B ) ) <_ 1 ) )
86		1nn0 10893	. . . . . . . 8 |- 1 e. NN0
87		nn0leltp1 11003	. . . . . . . 8 |- ( ( ( ( p pCnt A ) + ( p pCnt B ) ) e. NN0 /\ 1 e. NN0 ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) <_ 1 <-> ( ( p pCnt A ) + ( p pCnt B ) ) < ( 1 + 1 ) ) )
88	43, 86, 87	sylancl 666	. . . . . . 7 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) <_ 1 <-> ( ( p pCnt A ) + ( p pCnt B ) ) < ( 1 + 1 ) ) )
89		ltlen 9743	. . . . . . . 8 |- ( ( ( ( p pCnt A ) + ( p pCnt B ) ) e. RR /\ ( 1 + 1 ) e. RR ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) < ( 1 + 1 ) <-> ( ( ( p pCnt A ) + ( p pCnt B ) ) <_ ( 1 + 1 ) /\ ( 1 + 1 ) =/= ( ( p pCnt A ) + ( p pCnt B ) ) ) ) )
90	44, 41, 89	sylancl 666	. . . . . . 7 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) + ( p pCnt B ) ) < ( 1 + 1 ) <-> ( ( ( p pCnt A ) + ( p pCnt B ) ) <_ ( 1 + 1 ) /\ ( 1 + 1 ) =/= ( ( p pCnt A ) + ( p pCnt B ) ) ) ) )
91	85, 88, 90	3bitrd 282	. . . . . 6 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( p pCnt ( A x. B ) ) <_ 1 <-> ( ( ( p pCnt A ) + ( p pCnt B ) ) <_ ( 1 + 1 ) /\ ( 1 + 1 ) =/= ( ( p pCnt A ) + ( p pCnt B ) ) ) ) )
92	74, 91	sylibrd 237	. . . . 5 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ p e. Prime ) -> ( ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) -> ( p pCnt ( A x. B ) ) <_ 1 ) )
93	92	ralimdva 2830	. . . 4 |- ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) -> ( A. p e. Prime ( ( p pCnt A ) <_ 1 /\ ( p pCnt B ) <_ 1 ) -> A. p e. Prime ( p pCnt ( A x. B ) ) <_ 1 ) )
94	1, 93	syl5bir 221	. . 3 |- ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) -> ( ( A. p e. Prime ( p pCnt A ) <_ 1 /\ A. p e. Prime ( p pCnt B ) <_ 1 ) -> A. p e. Prime ( p pCnt ( A x. B ) ) <_ 1 ) )
95		issqf 24062	. . . . 5 |- ( A e. NN -> ( ( mmu ` A ) =/= 0 <-> A. p e. Prime ( p pCnt A ) <_ 1 ) )
96		issqf 24062	. . . . 5 |- ( B e. NN -> ( ( mmu ` B ) =/= 0 <-> A. p e. Prime ( p pCnt B ) <_ 1 ) )
97	95, 96	bi2anan9 881	. . . 4 |- ( ( A e. NN /\ B e. NN ) -> ( ( ( mmu ` A ) =/= 0 /\ ( mmu ` B ) =/= 0 ) <-> ( A. p e. Prime ( p pCnt A ) <_ 1 /\ A. p e. Prime ( p pCnt B ) <_ 1 ) ) )
98	97	3adant3 1025	. . 3 |- ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) -> ( ( ( mmu ` A ) =/= 0 /\ ( mmu ` B ) =/= 0 ) <-> ( A. p e. Prime ( p pCnt A ) <_ 1 /\ A. p e. Prime ( p pCnt B ) <_ 1 ) ) )
99		nnmulcl 10640	. . . . 5 |- ( ( A e. NN /\ B e. NN ) -> ( A x. B ) e. NN )
100	99	3adant3 1025	. . . 4 |- ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) -> ( A x. B ) e. NN )
101		issqf 24062	. . . 4 |- ( ( A x. B ) e. NN -> ( ( mmu ` ( A x. B ) ) =/= 0 <-> A. p e. Prime ( p pCnt ( A x. B ) ) <_ 1 ) )
102	100, 101	syl 17	. . 3 |- ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) -> ( ( mmu ` ( A x. B ) ) =/= 0 <-> A. p e. Prime ( p pCnt ( A x. B ) ) <_ 1 ) )
103	94, 98, 102	3imtr4d 271	. 2 |- ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) -> ( ( ( mmu ` A ) =/= 0 /\ ( mmu ` B ) =/= 0 ) -> ( mmu ` ( A x. B ) ) =/= 0 ) )
104	103	imp 430	1 |- ( ( ( A e. NN /\ B e. NN /\ ( A gcd B ) = 1 ) /\ ( ( mmu ` A ) =/= 0 /\ ( mmu ` B ) =/= 0 ) ) -> ( mmu ` ( A x. B ) ) =/= 0 )

Syntax hints:   -. wn 3   -> wi 4   <-> wb 187   /\ wa 370   /\ w3a 982   = wceq 1437   e. wcel 1872   =/= wne 2614   A.wral 2771   ifcif 3911   class class class wbr 4423   ` cfv 5601  (class class class)co 6306   CCcc 9545   RRcr 9546   0cc0 9547   1c1 9548   + caddc 9550   x. cmul 9552   < clt 9683   <_ cle 9684   - cmin 9868   NNcn 10617   NN0cn0 10877   ZZcz 10945   gcd cgcd 14468   Primecprime 14622   pCnt cpc 14786   mmucmu 24020

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1663  ax-4 1676  ax-5 1752  ax-6 1798  ax-7 1843  ax-8 1874  ax-9 1876  ax-10 1891  ax-11 1896  ax-12 1909  ax-13 2057  ax-ext 2401  ax-sep 4546  ax-nul 4555  ax-pow 4602  ax-pr 4660  ax-un 6598  ax-cnex 9603  ax-resscn 9604  ax-1cn 9605  ax-icn 9606  ax-addcl 9607  ax-addrcl 9608  ax-mulcl 9609  ax-mulrcl 9610  ax-mulcom 9611  ax-addass 9612  ax-mulass 9613  ax-distr 9614  ax-i2m1 9615  ax-1ne0 9616  ax-1rid 9617  ax-rnegex 9618  ax-rrecex 9619  ax-cnre 9620  ax-pre-lttri 9621  ax-pre-lttrn 9622  ax-pre-ltadd 9623  ax-pre-mulgt0 9624  ax-pre-sup 9625

This theorem depends on definitions:  df-bi 188  df-or 371  df-an 372  df-3or 983  df-3an 984  df-tru 1440  df-ex 1658  df-nf 1662  df-sb 1791  df-eu 2273  df-mo 2274  df-clab 2408  df-cleq 2414  df-clel 2417  df-nfc 2568  df-ne 2616  df-nel 2617  df-ral 2776  df-rex 2777  df-reu 2778  df-rmo 2779  df-rab 2780  df-v 3082  df-sbc 3300  df-csb 3396  df-dif 3439  df-un 3441  df-in 3443  df-ss 3450  df-pss 3452  df-nul 3762  df-if 3912  df-pw 3983  df-sn 3999  df-pr 4001  df-tp 4003  df-op 4005  df-uni 4220  df-int 4256  df-iun 4301  df-br 4424  df-opab 4483  df-mpt 4484  df-tr 4519  df-eprel 4764  df-id 4768  df-po 4774  df-so 4775  df-fr 4812  df-we 4814  df-xp 4859  df-rel 4860  df-cnv 4861  df-co 4862  df-dm 4863  df-rn 4864  df-res 4865  df-ima 4866  df-pred 5399  df-ord 5445  df-on 5446  df-lim 5447  df-suc 5448  df-iota 5565  df-fun 5603  df-fn 5604  df-f 5605  df-f1 5606  df-fo 5607  df-f1o 5608  df-fv 5609  df-riota 6268  df-ov 6309  df-oprab 6310  df-mpt2 6311  df-om 6708  df-1st 6808  df-2nd 6809  df-wrecs 7040  df-recs 7102  df-rdg 7140  df-1o 7194  df-2o 7195  df-oadd 7198  df-er 7375  df-en 7582  df-dom 7583  df-sdom 7584  df-fin 7585  df-sup 7966  df-inf 7967  df-card 8382  df-pnf 9685  df-mnf 9686  df-xr 9687  df-ltxr 9688  df-le 9689  df-sub 9870  df-neg 9871  df-div 10278  df-nn 10618  df-2 10676  df-3 10677  df-n0 10878  df-z 10946  df-uz 11168  df-q 11273  df-rp 11311  df-fz 11793  df-fl 12035  df-mod 12104  df-seq 12221  df-exp 12280  df-hash 12523  df-cj 13163  df-re 13164  df-im 13165  df-sqrt 13299  df-abs 13300  df-dvds 14306  df-gcd 14469  df-prm 14623  df-pc 14787  df-mu 24026

This theorem is referenced by:  mumul  24107