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Theorem lgsval 16037
Description: Value of the Legendre symbol at an arbitrary integer. (Contributed by Mario Carneiro, 4-Feb-2015.)
Hypothesis
Ref Expression
lgsval.1 |- F = ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt N ) ) , 1 ) )
Assertion
Ref Expression
lgsval |- ( ( A e. ZZ /\ N e. ZZ ) -> ( A /L N ) = if ( N = 0 , if ( ( A ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) ) )
Distinct variable groups:   A, n   n, N
Allowed substitution hint:   F( n)
Proof of Theorem lgsval
Dummy variables a m k v are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 1zzd 9650 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> 1 e. ZZ )
2 0zd 9635 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> 0 e. ZZ )
3 zsqcl 11025 . . . . . 6 |- ( A e. ZZ -> ( A ^ 2 ) e. ZZ )
43ad2antrr 492 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> ( A ^ 2 ) e. ZZ )
5 zdceq 9699 . . . . 5 |- ( ( ( A ^ 2 ) e. ZZ /\ 1 e. ZZ ) -> DECID ( A ^ 2 ) = 1 )
64, 1, 5syl2anc 415 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> DECID ( A ^ 2 ) = 1 )
71, 2, 6ifcldcd 3675 . . 3 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> if ( ( A ^ 2 ) = 1 , 1 , 0 ) e. ZZ )
8 neg1z 9655 . . . . . 6 |- -u 1 e. ZZ
98a1i 9 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> -u 1 e. ZZ )
10 1zzd 9650 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> 1 e. ZZ )
11 simpr 110 . . . . . . 7 |- ( ( A e. ZZ /\ N e. ZZ ) -> N e. ZZ )
12 0zd 9635 . . . . . . 7 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> 0 e. ZZ )
13 zdclt 9701 . . . . . . 7 |- ( ( N e. ZZ /\ 0 e. ZZ ) -> DECID N < 0 )
1411, 12, 13syl2an2r 603 . . . . . 6 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> DECID N < 0 )
15 simpl 109 . . . . . . 7 |- ( ( A e. ZZ /\ N e. ZZ ) -> A e. ZZ )
16 zdclt 9701 . . . . . . 7 |- ( ( A e. ZZ /\ 0 e. ZZ ) -> DECID A < 0 )
1715, 12, 16syl2an2r 603 . . . . . 6 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> DECID A < 0 )
18 dcan2 947 . . . . . 6 |- (DECID N < 0 -> (DECID A < 0 -> DECID ( N < 0 /\ A < 0 ) ) )
1914, 17, 18sylc 62 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> DECID ( N < 0 /\ A < 0 ) )
209, 10, 19ifcldcd 3675 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) e. ZZ )
21 nnuz 9937 . . . . . 6 |- NN = ( ZZ>= ` 1 )
22 lgsval.1 . . . . . . . 8 |- F = ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt N ) ) , 1 ) )
23 eleq1w 2299 . . . . . . . . 9 |- ( n = k -> ( n e. Prime <-> k e. Prime ) )
24 eqeq1 2245 . . . . . . . . . . 11 |- ( n = k -> ( n = 2 <-> k = 2 ) )
25 oveq1 6082 . . . . . . . . . . . . . . . 16 |- ( n = k -> ( n - 1 ) = ( k - 1 ) )
2625oveq1d 6090 . . . . . . . . . . . . . . 15 |- ( n = k -> ( ( n - 1 ) / 2 ) = ( ( k - 1 ) / 2 ) )
2726oveq2d 6091 . . . . . . . . . . . . . 14 |- ( n = k -> ( A ^ ( ( n - 1 ) / 2 ) ) = ( A ^ ( ( k - 1 ) / 2 ) ) )
2827oveq1d 6090 . . . . . . . . . . . . 13 |- ( n = k -> ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) = ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) )
29 id 19 . . . . . . . . . . . . 13 |- ( n = k -> n = k )
3028, 29oveq12d 6093 . . . . . . . . . . . 12 |- ( n = k -> ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) = ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) )
3130oveq1d 6090 . . . . . . . . . . 11 |- ( n = k -> ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) = ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) )
3224, 31ifbieq2d 3662 . . . . . . . . . 10 |- ( n = k -> if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) = if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) )
33 oveq1 6082 . . . . . . . . . 10 |- ( n = k -> ( n pCnt N ) = ( k pCnt N ) )
3432, 33oveq12d 6093 . . . . . . . . 9 |- ( n = k -> ( if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt N ) ) = ( if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) ^ ( k pCnt N ) ) )
3523, 34ifbieq1d 3660 . . . . . . . 8 |- ( n = k -> if ( n e. Prime , ( if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt N ) ) , 1 ) = if ( k e. Prime , ( if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) ^ ( k pCnt N ) ) , 1 ) )
36 simpr 110 . . . . . . . 8 |- ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) -> k e. NN )
37 0zd 9635 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> 0 e. ZZ )
38 1zzd 9650 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> 1 e. ZZ )
3938znegcld 9749 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> -u 1 e. ZZ )
40 id 19 . . . . . . . . . . . . . . . . . . 19 |- ( A e. ZZ -> A e. ZZ )
41 8nn 9451 . . . . . . . . . . . . . . . . . . . 20 |- 8 e. NN
4241a1i 9 . . . . . . . . . . . . . . . . . . 19 |- ( A e. ZZ -> 8 e. NN )
4340, 42zmodcld 10760 . . . . . . . . . . . . . . . . . 18 |- ( A e. ZZ -> ( A mod 8 ) e. NN0 )
4443nn0zd 9745 . . . . . . . . . . . . . . . . 17 |- ( A e. ZZ -> ( A mod 8 ) e. ZZ )
45 1zzd 9650 . . . . . . . . . . . . . . . . 17 |- ( A e. ZZ -> 1 e. ZZ )
46 zdceq 9699 . . . . . . . . . . . . . . . . 17 |- ( ( ( A mod 8 ) e. ZZ /\ 1 e. ZZ ) -> DECID ( A mod 8 ) = 1 )
4744, 45, 46syl2anc 415 . . . . . . . . . . . . . . . 16 |- ( A e. ZZ -> DECID ( A mod 8 ) = 1 )
48 7nn 9450 . . . . . . . . . . . . . . . . . 18 |- 7 e. NN
4948nnzi 9644 . . . . . . . . . . . . . . . . 17 |- 7 e. ZZ
50 zdceq 9699 . . . . . . . . . . . . . . . . 17 |- ( ( ( A mod 8 ) e. ZZ /\ 7 e. ZZ ) -> DECID ( A mod 8 ) = 7 )
5144, 49, 50sylancl 417 . . . . . . . . . . . . . . . 16 |- ( A e. ZZ -> DECID ( A mod 8 ) = 7 )
52 dcor 948 . . . . . . . . . . . . . . . 16 |- (DECID ( A mod 8 ) = 1 -> (DECID ( A mod 8 ) = 7 -> DECID ( ( A mod 8 ) = 1 \/ ( A mod 8 ) = 7 ) ) )
5347, 51, 52sylc 62 . . . . . . . . . . . . . . 15 |- ( A e. ZZ -> DECID ( ( A mod 8 ) = 1 \/ ( A mod 8 ) = 7 ) )
54 elprg 3725 . . . . . . . . . . . . . . . . 17 |- ( ( A mod 8 ) e. NN0 -> ( ( A mod 8 ) e. { 1 , 7 } <-> ( ( A mod 8 ) = 1 \/ ( A mod 8 ) = 7 ) ) )
5543, 54syl 14 . . . . . . . . . . . . . . . 16 |- ( A e. ZZ -> ( ( A mod 8 ) e. { 1 , 7 } <-> ( ( A mod 8 ) = 1 \/ ( A mod 8 ) = 7 ) ) )
5655dcbid 850 . . . . . . . . . . . . . . 15 |- ( A e. ZZ -> (DECID ( A mod 8 ) e. { 1 , 7 } <-> DECID ( ( A mod 8 ) = 1 \/ ( A mod 8 ) = 7 ) ) )
5753, 56mpbird 167 . . . . . . . . . . . . . 14 |- ( A e. ZZ -> DECID ( A mod 8 ) e. { 1 , 7 } )
5857ad5antr 500 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> DECID ( A mod 8 ) e. { 1 , 7 } )
5938, 39, 58ifcldcd 3675 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) e. ZZ )
60 2nn 9445 . . . . . . . . . . . . . 14 |- 2 e. NN
6160a1i 9 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> 2 e. NN )
62 simp-5l 549 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> A e. ZZ )
63 dvdsdc 12543 . . . . . . . . . . . . 13 |- ( ( 2 e. NN /\ A e. ZZ ) -> DECID 2 || A )
6461, 62, 63syl2anc 415 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> DECID 2 || A )
6537, 59, 64ifcldcd 3675 . . . . . . . . . . 11 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) e. ZZ )
66 simp-5l 549 . . . . . . . . . . . . . . . 16 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> A e. ZZ )
67 simpr 110 . . . . . . . . . . . . . . . . . 18 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> -. k = 2 )
68 prm2orodd 12882 . . . . . . . . . . . . . . . . . . . 20 |- ( k e. Prime -> ( k = 2 \/ -. 2 || k ) )
6968orcomd 741 . . . . . . . . . . . . . . . . . . 19 |- ( k e. Prime -> ( -. 2 || k \/ k = 2 ) )
7069ad2antlr 493 . . . . . . . . . . . . . . . . . 18 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( -. 2 || k \/ k = 2 ) )
7167, 70ecased 1390 . . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> -. 2 || k )
72 prmnn 12866 . . . . . . . . . . . . . . . . . . . 20 |- ( k e. Prime -> k e. NN )
7372nnnn0d 9599 . . . . . . . . . . . . . . . . . . 19 |- ( k e. Prime -> k e. NN0 )
74 nn0oddm1d2 12654 . . . . . . . . . . . . . . . . . . 19 |- ( k e. NN0 -> ( -. 2 || k <-> ( ( k - 1 ) / 2 ) e. NN0 ) )
7573, 74syl 14 . . . . . . . . . . . . . . . . . 18 |- ( k e. Prime -> ( -. 2 || k <-> ( ( k - 1 ) / 2 ) e. NN0 ) )
7675ad2antlr 493 . . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( -. 2 || k <-> ( ( k - 1 ) / 2 ) e. NN0 ) )
7771, 76mpbid 147 . . . . . . . . . . . . . . . 16 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( ( k - 1 ) / 2 ) e. NN0 )
78 zexpcl 10969 . . . . . . . . . . . . . . . 16 |- ( ( A e. ZZ /\ ( ( k - 1 ) / 2 ) e. NN0 ) -> ( A ^ ( ( k - 1 ) / 2 ) ) e. ZZ )
7966, 77, 78syl2anc 415 . . . . . . . . . . . . . . 15 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( A ^ ( ( k - 1 ) / 2 ) ) e. ZZ )
8079peano2zd 9750 . . . . . . . . . . . . . 14 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) e. ZZ )
8136ad2antrr 492 . . . . . . . . . . . . . 14 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> k e. NN )
8280, 81zmodcld 10760 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) e. NN0 )
8382nn0zd 9745 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) e. ZZ )
84 1zzd 9650 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> 1 e. ZZ )
8583, 84zsubcld 9752 . . . . . . . . . . 11 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) e. ZZ )
86 nnz 9642 . . . . . . . . . . . . 13 |- ( k e. NN -> k e. ZZ )
8786ad2antlr 493 . . . . . . . . . . . 12 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> k e. ZZ )
88 2z 9651 . . . . . . . . . . . 12 |- 2 e. ZZ
89 zdceq 9699 . . . . . . . . . . . 12 |- ( ( k e. ZZ /\ 2 e. ZZ ) -> DECID k = 2 )
9087, 88, 89sylancl 417 . . . . . . . . . . 11 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> DECID k = 2 )
9165, 85, 90ifcldadc 3667 . . . . . . . . . 10 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) e. ZZ )
92 simpr 110 . . . . . . . . . . 11 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> k e. Prime )
93 simp-4r 548 . . . . . . . . . . 11 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> N e. ZZ )
94 neqne 2428 . . . . . . . . . . . 12 |- ( -. N = 0 -> N =/= 0 )
9594ad3antlr 497 . . . . . . . . . . 11 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> N =/= 0 )
96 pczcl 13055 . . . . . . . . . . 11 |- ( ( k e. Prime /\ ( N e. ZZ /\ N =/= 0 ) ) -> ( k pCnt N ) e. NN0 )
9792, 93, 95, 96syl12anc 1276 . . . . . . . . . 10 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> ( k pCnt N ) e. NN0 )
98 zexpcl 10969 . . . . . . . . . 10 |- ( ( if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) e. ZZ /\ ( k pCnt N ) e. NN0 ) -> ( if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) ^ ( k pCnt N ) ) e. ZZ )
9991, 97, 98syl2anc 415 . . . . . . . . 9 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> ( if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) ^ ( k pCnt N ) ) e. ZZ )
100 1zzd 9650 . . . . . . . . 9 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ -. k e. Prime ) -> 1 e. ZZ )
101 prmdc 12886 . . . . . . . . . 10 |- ( k e. NN -> DECID k e. Prime )
102101adantl 277 . . . . . . . . 9 |- ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) -> DECID k e. Prime )
10399, 100, 102ifcldadc 3667 . . . . . . . 8 |- ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) -> if ( k e. Prime , ( if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) ^ ( k pCnt N ) ) , 1 ) e. ZZ )
10422, 35, 36, 103fvmptd3 5793 . . . . . . 7 |- ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) -> ( F ` k ) = if ( k e. Prime , ( if ( k = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) ) ^ ( k pCnt N ) ) , 1 ) )
105104, 103eqeltrd 2315 . . . . . 6 |- ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) -> ( F ` k ) e. ZZ )
106 zmulcl 9677 . . . . . . 7 |- ( ( k e. ZZ /\ v e. ZZ ) -> ( k x. v ) e. ZZ )
107106adantl 277 . . . . . 6 |- ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ ( k e. ZZ /\ v e. ZZ ) ) -> ( k x. v ) e. ZZ )
10821, 10, 105, 107seqf 10879 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> seq 1 ( x. , F ) : NN --> ZZ )
109 simplr 533 . . . . . 6 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> N e. ZZ )
11094adantl 277 . . . . . 6 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> N =/= 0 )
111 nnabscl 11844 . . . . . 6 |- ( ( N e. ZZ /\ N =/= 0 ) -> ( abs ` N ) e. NN )
112109, 110, 111syl2anc 415 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> ( abs ` N ) e. NN )
113108, 112ffvelcdmd 5835 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> ( seq 1 ( x. , F ) ` ( abs ` N ) ) e. ZZ )
11420, 113zmulcld 9753 . . 3 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) e. ZZ )
115 0zd 9635 . . . 4 |- ( ( A e. ZZ /\ N e. ZZ ) -> 0 e. ZZ )
116 zdceq 9699 . . . 4 |- ( ( N e. ZZ /\ 0 e. ZZ ) -> DECID N = 0 )
11711, 115, 116syl2anc 415 . . 3 |- ( ( A e. ZZ /\ N e. ZZ ) -> DECID N = 0 )
1187, 114, 117ifcldadc 3667 . 2 |- ( ( A e. ZZ /\ N e. ZZ ) -> if ( N = 0 , if ( ( A ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) ) e. ZZ )
119 simpr 110 . . . . 5 |- ( ( a = A /\ m = N ) -> m = N )
120119eqeq1d 2247 . . . 4 |- ( ( a = A /\ m = N ) -> ( m = 0 <-> N = 0 ) )
121 simpl 109 . . . . . . 7 |- ( ( a = A /\ m = N ) -> a = A )
122121oveq1d 6090 . . . . . 6 |- ( ( a = A /\ m = N ) -> ( a ^ 2 ) = ( A ^ 2 ) )
123122eqeq1d 2247 . . . . 5 |- ( ( a = A /\ m = N ) -> ( ( a ^ 2 ) = 1 <-> ( A ^ 2 ) = 1 ) )
124123ifbid 3659 . . . 4 |- ( ( a = A /\ m = N ) -> if ( ( a ^ 2 ) = 1 , 1 , 0 ) = if ( ( A ^ 2 ) = 1 , 1 , 0 ) )
125119breq1d 4135 . . . . . . 7 |- ( ( a = A /\ m = N ) -> ( m < 0 <-> N < 0 ) )
126121breq1d 4135 . . . . . . 7 |- ( ( a = A /\ m = N ) -> ( a < 0 <-> A < 0 ) )
127125, 126anbi12d 477 . . . . . 6 |- ( ( a = A /\ m = N ) -> ( ( m < 0 /\ a < 0 ) <-> ( N < 0 /\ A < 0 ) ) )
128127ifbid 3659 . . . . 5 |- ( ( a = A /\ m = N ) -> if ( ( m < 0 /\ a < 0 ) , -u 1 , 1 ) = if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) )
129121breq2d 4137 . . . . . . . . . . . . 13 |- ( ( a = A /\ m = N ) -> ( 2 || a <-> 2 || A ) )
130121oveq1d 6090 . . . . . . . . . . . . . . 15 |- ( ( a = A /\ m = N ) -> ( a mod 8 ) = ( A mod 8 ) )
131130eleq1d 2307 . . . . . . . . . . . . . 14 |- ( ( a = A /\ m = N ) -> ( ( a mod 8 ) e. { 1 , 7 } <-> ( A mod 8 ) e. { 1 , 7 } ) )
132131ifbid 3659 . . . . . . . . . . . . 13 |- ( ( a = A /\ m = N ) -> if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) = if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) )
133129, 132ifbieq2d 3662 . . . . . . . . . . . 12 |- ( ( a = A /\ m = N ) -> if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) = if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) )
134121oveq1d 6090 . . . . . . . . . . . . . . 15 |- ( ( a = A /\ m = N ) -> ( a ^ ( ( n - 1 ) / 2 ) ) = ( A ^ ( ( n - 1 ) / 2 ) ) )
135134oveq1d 6090 . . . . . . . . . . . . . 14 |- ( ( a = A /\ m = N ) -> ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) = ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) )
136135oveq1d 6090 . . . . . . . . . . . . 13 |- ( ( a = A /\ m = N ) -> ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) = ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) )
137136oveq1d 6090 . . . . . . . . . . . 12 |- ( ( a = A /\ m = N ) -> ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) = ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) )
138133, 137ifeq12d 3657 . . . . . . . . . . 11 |- ( ( a = A /\ m = N ) -> if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) = if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) )
139119oveq2d 6091 . . . . . . . . . . 11 |- ( ( a = A /\ m = N ) -> ( n pCnt m ) = ( n pCnt N ) )
140138, 139oveq12d 6093 . . . . . . . . . 10 |- ( ( a = A /\ m = N ) -> ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) = ( if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt N ) ) )
141140ifeq1d 3655 . . . . . . . . 9 |- ( ( a = A /\ m = N ) -> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) = if ( n e. Prime , ( if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt N ) ) , 1 ) )
142141mpteq2dv 4217 . . . . . . . 8 |- ( ( a = A /\ m = N ) -> ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) ) = ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || A , 0 , if ( ( A mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt N ) ) , 1 ) ) )
143142, 22eqtr4di 2289 . . . . . . 7 |- ( ( a = A /\ m = N ) -> ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) ) = F )
144143seqeq3d 10870 . . . . . 6 |- ( ( a = A /\ m = N ) -> seq 1 ( x. , ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) ) ) = seq 1 ( x. , F ) )
145119fveq2d 5694 . . . . . 6 |- ( ( a = A /\ m = N ) -> ( abs ` m ) = ( abs ` N ) )
146144, 145fveq12d 5697 . . . . 5 |- ( ( a = A /\ m = N ) -> ( seq 1 ( x. , ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) ) ) ` ( abs ` m ) ) = ( seq 1 ( x. , F ) ` ( abs ` N ) ) )
147128, 146oveq12d 6093 . . . 4 |- ( ( a = A /\ m = N ) -> ( if ( ( m < 0 /\ a < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) ) ) ` ( abs ` m ) ) ) = ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) )
148120, 124, 147ifbieq12d 3664 . . 3 |- ( ( a = A /\ m = N ) -> if ( m = 0 , if ( ( a ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( m < 0 /\ a < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) ) ) ` ( abs ` m ) ) ) ) = if ( N = 0 , if ( ( A ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) ) )
149 df-lgs 16031 . . 3 |- /L = ( a e. ZZ , m e. ZZ |-> if ( m = 0 , if ( ( a ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( m < 0 /\ a < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , ( n e. NN |-> if ( n e. Prime , ( if ( n = 2 , if ( 2 || a , 0 , if ( ( a mod 8 ) e. { 1 , 7 } , 1 , -u 1 ) ) , ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) ) ^ ( n pCnt m ) ) , 1 ) ) ) ` ( abs ` m ) ) ) ) )
150148, 149ovmpoga 6208 . 2 |- ( ( A e. ZZ /\ N e. ZZ /\ if ( N = 0 , if ( ( A ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) ) e. ZZ ) -> ( A /L N ) = if ( N = 0 , if ( ( A ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) ) )
151118, 150mpd3an3 1379 1 |- ( ( A e. ZZ /\ N e. ZZ ) -> ( A /L N ) = if ( N = 0 , if ( ( A ^ 2 ) = 1 , 1 , 0 ) , ( if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) x. ( seq 1 ( x. , F ) ` ( abs ` N ) ) ) ) )
Colors of variables: wff set class
Syntax hints:   -. wn 3   -> wi 4   /\ wa 104   <-> wb 105   \/ wo 720  DECID wdc 846   = wceq 1402   e. wcel 2209   =/= wne 2420   ifcif 3635   {cpr 3706   class class class wbr 4125   |-> cmpt 4187   ` cfv 5372  (class class class)co 6075   0cc0 8169   1c1 8170   + caddc 8172   x. cmul 8174   < clt 8350   - cmin 8487   -ucneg 8488   / cdiv 8992   NNcn 9283   2c2 9334   7c7 9339   8c8 9340   NN0cn0 9542   ZZcz 9623   mod cmo 10737   seqcseq 10862   ^cexp 10953   abscabs 11741   || cdvds 12532   Primecprime 12863   pCnt cpc 13041   /Lclgs 16030
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 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-coll 4241  ax-sep 4244  ax-nul 4254  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679  ax-iinf 4730  ax-cnex 8260  ax-resscn 8261  ax-1cn 8262  ax-1re 8263  ax-icn 8264  ax-addcl 8265  ax-addrcl 8266  ax-mulcl 8267  ax-mulrcl 8268  ax-addcom 8269  ax-mulcom 8270  ax-addass 8271  ax-mulass 8272  ax-distr 8273  ax-i2m1 8274  ax-0lt1 8275  ax-1rid 8276  ax-0id 8277  ax-rnegex 8278  ax-precex 8279  ax-cnre 8280  ax-pre-ltirr 8281  ax-pre-ltwlin 8282  ax-pre-lttrn 8283  ax-pre-apti 8284  ax-pre-ltadd 8285  ax-pre-mulgt0 8286  ax-pre-mulext 8287  ax-arch 8288  ax-caucvg 8289
This theorem depends on definitions:  df-bi 117  df-stab 843  df-dc 847  df-3or 1010  df-3an 1011  df-tru 1405  df-fal 1408  df-xor 1425  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-nel 2516  df-ral 2533  df-rex 2534  df-reu 2535  df-rmo 2536  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-if 3636  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-int 3966  df-iun 4009  df-br 4126  df-opab 4188  df-mpt 4189  df-tr 4225  df-id 4433  df-po 4436  df-iso 4437  df-iord 4506  df-on 4508  df-ilim 4509  df-suc 4511  df-iom 4733  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-res 4781  df-ima 4782  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-f1 5377  df-fo 5378  df-f1o 5379  df-fv 5380  df-isom 5381  df-riota 6028  df-ov 6078  df-oprab 6079  df-mpo 6080  df-1st 6364  df-2nd 6365  df-recs 6566  df-frec 6652  df-1o 6677  df-2o 6678  df-er 6797  df-en 7013  df-fin 7015  df-sup 7314  df-inf 7315  df-pnf 8352  df-mnf 8353  df-xr 8354  df-ltxr 8355  df-le 8356  df-sub 8489  df-neg 8490  df-reap 8893  df-ap 8900  df-div 8993  df-inn 9284  df-2 9342  df-3 9343  df-4 9344  df-5 9345  df-6 9346  df-7 9347  df-8 9348  df-n0 9543  df-z 9624  df-uz 9901  df-q 9999  df-rp 10034  df-fz 10391  df-fzo 10528  df-fl 10683  df-mod 10738  df-seqfrec 10863  df-exp 10954  df-cj 11585  df-re 11586  df-im 11587  df-rsqrt 11742  df-abs 11743  df-dvds 12533  df-gcd 12709  df-prm 12864  df-pc 13042  df-lgs 16031
This theorem is referenced by:  lgscllem  16040  lgsval2lem  16043  lgs0  16046  lgsval4  16053
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