Theorem lgslem1 15819

Description: When a is coprime to the prime p, a ^ ( ( p - 1 ) / 2 ) is equivalent mod p to 1 or -u 1, and so adding 1 makes it equivalent to 0 or 2. (Contributed by Mario Carneiro, 4-Feb-2015.)

Assertion

Ref	Expression
lgslem1	|- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. { 0 , 2 } )

Proof of Theorem lgslem1

Step	Hyp	Ref	Expression
1		eldifi 3331	. . . . . . . . 9 |- ( P e. ( Prime \ { 2 } ) -> P e. Prime )
2	1	3ad2ant2 1046	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P e. Prime )
3		prmnn 12762	. . . . . . . 8 |- ( P e. Prime -> P e. NN )
4	2, 3	syl 14	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P e. NN )
5		simp1 1024	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> A e. ZZ )
6		prmz 12763	. . . . . . . . . 10 |- ( P e. Prime -> P e. ZZ )
7	2, 6	syl 14	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P e. ZZ )
8	5, 7	gcdcomd 12625	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A gcd P ) = ( P gcd A ) )
9		simp3 1026	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> -. P || A )
10		coprm 12796	. . . . . . . . . 10 |- ( ( P e. Prime /\ A e. ZZ ) -> ( -. P || A <-> ( P gcd A ) = 1 ) )
11	2, 5, 10	syl2anc 411	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( -. P || A <-> ( P gcd A ) = 1 ) )
12	9, 11	mpbid 147	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P gcd A ) = 1 )
13	8, 12	eqtrd 2264	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A gcd P ) = 1 )
14		eulerth 12885	. . . . . . 7 |- ( ( P e. NN /\ A e. ZZ /\ ( A gcd P ) = 1 ) -> ( ( A ^ ( phi ` P ) ) mod P ) = ( 1 mod P ) )
15	4, 5, 13, 14	syl3anc 1274	. . . . . 6 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( A ^ ( phi ` P ) ) mod P ) = ( 1 mod P ) )
16		phiprm 12875	. . . . . . . . . 10 |- ( P e. Prime -> ( phi ` P ) = ( P - 1 ) )
17	2, 16	syl 14	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( phi ` P ) = ( P - 1 ) )
18		nnm1nn0 9502	. . . . . . . . . 10 |- ( P e. NN -> ( P - 1 ) e. NN0 )
19	4, 18	syl 14	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P - 1 ) e. NN0 )
20	17, 19	eqeltrd 2308	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( phi ` P ) e. NN0 )
21		zexpcl 10879	. . . . . . . 8 |- ( ( A e. ZZ /\ ( phi ` P ) e. NN0 ) -> ( A ^ ( phi ` P ) ) e. ZZ )
22	5, 20, 21	syl2anc 411	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A ^ ( phi ` P ) ) e. ZZ )
23		1zzd 9567	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 1 e. ZZ )
24		moddvds 12440	. . . . . . 7 |- ( ( P e. NN /\ ( A ^ ( phi ` P ) ) e. ZZ /\ 1 e. ZZ ) -> ( ( ( A ^ ( phi ` P ) ) mod P ) = ( 1 mod P ) <-> P || ( ( A ^ ( phi ` P ) ) - 1 ) ) )
25	4, 22, 23, 24	syl3anc 1274	. . . . . 6 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( A ^ ( phi ` P ) ) mod P ) = ( 1 mod P ) <-> P || ( ( A ^ ( phi ` P ) ) - 1 ) ) )
26	15, 25	mpbid 147	. . . . 5 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P || ( ( A ^ ( phi ` P ) ) - 1 ) )
27	19	nn0cnd 9518	. . . . . . . . . . . 12 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P - 1 ) e. CC )
28		2cnd 9275	. . . . . . . . . . . 12 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 e. CC )
29		2ap0 9295	. . . . . . . . . . . . 13 |- 2 # 0
30	29	a1i 9	. . . . . . . . . . . 12 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 # 0 )
31	27, 28, 30	divcanap1d 9030	. . . . . . . . . . 11 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( P - 1 ) / 2 ) x. 2 ) = ( P - 1 ) )
32	17, 31	eqtr4d 2267	. . . . . . . . . 10 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( phi ` P ) = ( ( ( P - 1 ) / 2 ) x. 2 ) )
33	32	oveq2d 6044	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A ^ ( phi ` P ) ) = ( A ^ ( ( ( P - 1 ) / 2 ) x. 2 ) ) )
34	5	zcnd 9664	. . . . . . . . . 10 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> A e. CC )
35		2nn0 9478	. . . . . . . . . . 11 |- 2 e. NN0
36	35	a1i 9	. . . . . . . . . 10 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 e. NN0 )
37		oddprm 12912	. . . . . . . . . . . 12 |- ( P e. ( Prime \ { 2 } ) -> ( ( P - 1 ) / 2 ) e. NN )
38	37	3ad2ant2 1046	. . . . . . . . . . 11 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( P - 1 ) / 2 ) e. NN )
39	38	nnnn0d 9516	. . . . . . . . . 10 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( P - 1 ) / 2 ) e. NN0 )
40	34, 36, 39	expmuld 11001	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A ^ ( ( ( P - 1 ) / 2 ) x. 2 ) ) = ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) )
41	33, 40	eqtrd 2264	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A ^ ( phi ` P ) ) = ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) )
42	41	oveq1d 6043	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( A ^ ( phi ` P ) ) - 1 ) = ( ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) - 1 ) )
43		sq1 10958	. . . . . . . 8 |- ( 1 ^ 2 ) = 1
44	43	oveq2i 6039	. . . . . . 7 |- ( ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) - ( 1 ^ 2 ) ) = ( ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) - 1 )
45	42, 44	eqtr4di 2282	. . . . . 6 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( A ^ ( phi ` P ) ) - 1 ) = ( ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) - ( 1 ^ 2 ) ) )
46		zexpcl 10879	. . . . . . . . 9 |- ( ( A e. ZZ /\ ( ( P - 1 ) / 2 ) e. NN0 ) -> ( A ^ ( ( P - 1 ) / 2 ) ) e. ZZ )
47	5, 39, 46	syl2anc 411	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A ^ ( ( P - 1 ) / 2 ) ) e. ZZ )
48	47	zcnd 9664	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( A ^ ( ( P - 1 ) / 2 ) ) e. CC )
49		ax-1cn 8185	. . . . . . 7 |- 1 e. CC
50		subsq 10971	. . . . . . 7 |- ( ( ( A ^ ( ( P - 1 ) / 2 ) ) e. CC /\ 1 e. CC ) -> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) - ( 1 ^ 2 ) ) = ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) x. ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) )
51	48, 49, 50	sylancl 413	. . . . . 6 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) ^ 2 ) - ( 1 ^ 2 ) ) = ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) x. ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) )
52	45, 51	eqtrd 2264	. . . . 5 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( A ^ ( phi ` P ) ) - 1 ) = ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) x. ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) )
53	26, 52	breqtrd 4119	. . . 4 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P || ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) x. ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) )
54	47	peano2zd 9666	. . . . 5 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) e. ZZ )
55		peano2zm 9578	. . . . . 6 |- ( ( A ^ ( ( P - 1 ) / 2 ) ) e. ZZ -> ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) e. ZZ )
56	47, 55	syl 14	. . . . 5 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) e. ZZ )
57		euclemma 12798	. . . . 5 |- ( ( P e. Prime /\ ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) e. ZZ /\ ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) e. ZZ ) -> ( P || ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) x. ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) <-> ( P || ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) \/ P || ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) ) )
58	2, 54, 56, 57	syl3anc 1274	. . . 4 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P || ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) x. ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) <-> ( P || ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) \/ P || ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) ) )
59	53, 58	mpbid 147	. . 3 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P || ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) \/ P || ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) )
60		dvdsval3 12432	. . . . 5 |- ( ( P e. NN /\ ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) e. ZZ ) -> ( P || ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) <-> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 0 ) )
61	4, 54, 60	syl2anc 411	. . . 4 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P || ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) <-> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 0 ) )
62		2z 9568	. . . . . . 7 |- 2 e. ZZ
63	62	a1i 9	. . . . . 6 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 e. ZZ )
64		moddvds 12440	. . . . . 6 |- ( ( P e. NN /\ ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) e. ZZ /\ 2 e. ZZ ) -> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = ( 2 mod P ) <-> P || ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) - 2 ) ) )
65	4, 54, 63, 64	syl3anc 1274	. . . . 5 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = ( 2 mod P ) <-> P || ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) - 2 ) ) )
66		zq 9921	. . . . . . . 8 |- ( 2 e. ZZ -> 2 e. QQ )
67	62, 66	mp1i 10	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 e. QQ )
68		zq 9921	. . . . . . . 8 |- ( P e. ZZ -> P e. QQ )
69	7, 68	syl 14	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P e. QQ )
70		0le2 9292	. . . . . . . 8 |- 0 <_ 2
71	70	a1i 9	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 0 <_ 2 )
72		eldifsni 3806	. . . . . . . . . 10 |- ( P e. ( Prime \ { 2 } ) -> P =/= 2 )
73	72	3ad2ant2 1046	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P =/= 2 )
74		zapne 9615	. . . . . . . . . 10 |- ( ( P e. ZZ /\ 2 e. ZZ ) -> ( P # 2 <-> P =/= 2 ) )
75	7, 62, 74	sylancl 413	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P # 2 <-> P =/= 2 ) )
76	73, 75	mpbird 167	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P # 2 )
77		2re 9272	. . . . . . . . . 10 |- 2 e. RR
78	77	a1i 9	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 e. RR )
79	4	nnred 9215	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P e. RR )
80		prmuz2 12783	. . . . . . . . . . 11 |- ( P e. Prime -> P e. ( ZZ>= ` 2 ) )
81	2, 80	syl 14	. . . . . . . . . 10 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> P e. ( ZZ>= ` 2 ) )
82		eluzle 9829	. . . . . . . . . 10 |- ( P e. ( ZZ>= ` 2 ) -> 2 <_ P )
83	81, 82	syl 14	. . . . . . . . 9 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 <_ P )
84	78, 79, 83	leltapd 8878	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( 2 < P <-> P # 2 ) )
85	76, 84	mpbird 167	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 2 < P )
86		modqid 10674	. . . . . . 7 |- ( ( ( 2 e. QQ /\ P e. QQ ) /\ ( 0 <_ 2 /\ 2 < P ) ) -> ( 2 mod P ) = 2 )
87	67, 69, 71, 85, 86	syl22anc 1275	. . . . . 6 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( 2 mod P ) = 2 )
88	87	eqeq2d 2243	. . . . 5 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = ( 2 mod P ) <-> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 2 ) )
89		df-2 9261	. . . . . . . 8 |- 2 = ( 1 + 1 )
90	89	oveq2i 6039	. . . . . . 7 |- ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) - 2 ) = ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) - ( 1 + 1 ) )
91	49	a1i 9	. . . . . . . 8 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> 1 e. CC )
92	48, 91, 91	pnpcan2d 8587	. . . . . . 7 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) - ( 1 + 1 ) ) = ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) )
93	90, 92	eqtrid 2276	. . . . . 6 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) - 2 ) = ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) )
94	93	breq2d 4105	. . . . 5 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P || ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) - 2 ) <-> P || ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) )
95	65, 88, 94	3bitr3rd 219	. . . 4 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( P || ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) <-> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 2 ) )
96	61, 95	orbi12d 801	. . 3 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( P || ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) \/ P || ( ( A ^ ( ( P - 1 ) / 2 ) ) - 1 ) ) <-> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 0 \/ ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 2 ) ) )
97	59, 96	mpbid 147	. 2 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 0 \/ ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 2 ) )
98	54, 4	zmodcld 10670	. . 3 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. NN0 )
99		elprg 3693	. . 3 |- ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. NN0 -> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. { 0 , 2 } <-> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 0 \/ ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 2 ) ) )
100	98, 99	syl 14	. 2 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. { 0 , 2 } <-> ( ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 0 \/ ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) = 2 ) ) )
101	97, 100	mpbird 167	1 |- ( ( A e. ZZ /\ P e. ( Prime \ { 2 } ) /\ -. P || A ) -> ( ( ( A ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. { 0 , 2 } )

Syntax hints:   -. wn 3   -> wi 4   <-> wb 105   \/ wo 716   /\ w3a 1005   = wceq 1398   e. wcel 2202   =/= wne 2403   \ cdif 3198   {csn 3673   {cpr 3674   class class class wbr 4093   ` cfv 5333  (class class class)co 6028   CCcc 8090   RRcr 8091   0cc0 8092   1c1 8093   + caddc 8095   x. cmul 8097   < clt 8273   <_ cle 8274   - cmin 8409   # cap 8820   / cdiv 8911   NNcn 9202   2c2 9253   NN0cn0 9461   ZZcz 9540   ZZ>=cuz 9816   QQcq 9914   mod cmo 10647   ^cexp 10863   || cdvds 12428   gcd cgcd 12604   Primecprime 12759   phicphi 12861

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-stab 839  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-xor 1421  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-isom 5342  df-riota 5981  df-ov 6031  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313  df-recs 6514  df-irdg 6579  df-frec 6600  df-1o 6625  df-2o 6626  df-oadd 6629  df-er 6745  df-en 6953  df-dom 6954  df-fin 6955  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-ihash 11101  df-cj 11482  df-re 11483  df-im 11484  df-rsqrt 11638  df-abs 11639  df-clim 11919  df-proddc 12192  df-dvds 12429  df-gcd 12605  df-prm 12760  df-phi 12863

This theorem is referenced by:  lgslem4  15822