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Theorem lgsval 15877
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 9604 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> 1 e. ZZ )
2 0zd 9589 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> 0 e. ZZ )
3 zsqcl 10972 . . . . . 6 |- ( A e. ZZ -> ( A ^ 2 ) e. ZZ )
43ad2antrr 488 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> ( A ^ 2 ) e. ZZ )
5 zdceq 9653 . . . . 5 |- ( ( ( A ^ 2 ) e. ZZ /\ 1 e. ZZ ) -> DECID ( A ^ 2 ) = 1 )
64, 1, 5syl2anc 411 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> DECID ( A ^ 2 ) = 1 )
71, 2, 6ifcldcd 3660 . . 3 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ N = 0 ) -> if ( ( A ^ 2 ) = 1 , 1 , 0 ) e. ZZ )
8 neg1z 9609 . . . . . 6 |- -u 1 e. ZZ
98a1i 9 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> -u 1 e. ZZ )
10 1zzd 9604 . . . . 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 9589 . . . . . . 7 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> 0 e. ZZ )
13 zdclt 9655 . . . . . . 7 |- ( ( N e. ZZ /\ 0 e. ZZ ) -> DECID N < 0 )
1411, 12, 13syl2an2r 599 . . . . . 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 9655 . . . . . . 7 |- ( ( A e. ZZ /\ 0 e. ZZ ) -> DECID A < 0 )
1715, 12, 16syl2an2r 599 . . . . . 6 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> DECID A < 0 )
18 dcan2 943 . . . . . 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 3660 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) e. ZZ )
21 nnuz 9890 . . . . . 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 2293 . . . . . . . . 9 |- ( n = k -> ( n e. Prime <-> k e. Prime ) )
24 eqeq1 2239 . . . . . . . . . . 11 |- ( n = k -> ( n = 2 <-> k = 2 ) )
25 oveq1 6057 . . . . . . . . . . . . . . . 16 |- ( n = k -> ( n - 1 ) = ( k - 1 ) )
2625oveq1d 6065 . . . . . . . . . . . . . . 15 |- ( n = k -> ( ( n - 1 ) / 2 ) = ( ( k - 1 ) / 2 ) )
2726oveq2d 6066 . . . . . . . . . . . . . 14 |- ( n = k -> ( A ^ ( ( n - 1 ) / 2 ) ) = ( A ^ ( ( k - 1 ) / 2 ) ) )
2827oveq1d 6065 . . . . . . . . . . . . 13 |- ( n = k -> ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) = ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) )
29 id 19 . . . . . . . . . . . . 13 |- ( n = k -> n = k )
3028, 29oveq12d 6068 . . . . . . . . . . . 12 |- ( n = k -> ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) = ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) )
3130oveq1d 6065 . . . . . . . . . . 11 |- ( n = k -> ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) = ( ( ( ( A ^ ( ( k - 1 ) / 2 ) ) + 1 ) mod k ) - 1 ) )
3224, 31ifbieq2d 3647 . . . . . . . . . 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 6057 . . . . . . . . . 10 |- ( n = k -> ( n pCnt N ) = ( k pCnt N ) )
3432, 33oveq12d 6068 . . . . . . . . 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 3645 . . . . . . . 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 9589 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> 0 e. ZZ )
38 1zzd 9604 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> 1 e. ZZ )
3938znegcld 9702 . . . . . . . . . . . . 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 9405 . . . . . . . . . . . . . . . . . . . 20 |- 8 e. NN
4241a1i 9 . . . . . . . . . . . . . . . . . . 19 |- ( A e. ZZ -> 8 e. NN )
4340, 42zmodcld 10707 . . . . . . . . . . . . . . . . . 18 |- ( A e. ZZ -> ( A mod 8 ) e. NN0 )
4443nn0zd 9698 . . . . . . . . . . . . . . . . 17 |- ( A e. ZZ -> ( A mod 8 ) e. ZZ )
45 1zzd 9604 . . . . . . . . . . . . . . . . 17 |- ( A e. ZZ -> 1 e. ZZ )
46 zdceq 9653 . . . . . . . . . . . . . . . . 17 |- ( ( ( A mod 8 ) e. ZZ /\ 1 e. ZZ ) -> DECID ( A mod 8 ) = 1 )
4744, 45, 46syl2anc 411 . . . . . . . . . . . . . . . 16 |- ( A e. ZZ -> DECID ( A mod 8 ) = 1 )
48 7nn 9404 . . . . . . . . . . . . . . . . . 18 |- 7 e. NN
4948nnzi 9598 . . . . . . . . . . . . . . . . 17 |- 7 e. ZZ
50 zdceq 9653 . . . . . . . . . . . . . . . . 17 |- ( ( ( A mod 8 ) e. ZZ /\ 7 e. ZZ ) -> DECID ( A mod 8 ) = 7 )
5144, 49, 50sylancl 413 . . . . . . . . . . . . . . . 16 |- ( A e. ZZ -> DECID ( A mod 8 ) = 7 )
52 dcor 944 . . . . . . . . . . . . . . . 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 3709 . . . . . . . . . . . . . . . . 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 846 . . . . . . . . . . . . . . 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 496 . . . . . . . . . . . . 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 3660 . . . . . . . . . . . 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 9399 . . . . . . . . . . . . . 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 545 . . . . . . . . . . . . 13 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> A e. ZZ )
63 dvdsdc 12484 . . . . . . . . . . . . 13 |- ( ( 2 e. NN /\ A e. ZZ ) -> DECID 2 || A )
6461, 62, 63syl2anc 411 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ k = 2 ) -> DECID 2 || A )
6537, 59, 64ifcldcd 3660 . . . . . . . . . . 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 545 . . . . . . . . . . . . . . . 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 12823 . . . . . . . . . . . . . . . . . . . 20 |- ( k e. Prime -> ( k = 2 \/ -. 2 || k ) )
6968orcomd 737 . . . . . . . . . . . . . . . . . . 19 |- ( k e. Prime -> ( -. 2 || k \/ k = 2 ) )
7069ad2antlr 489 . . . . . . . . . . . . . . . . . 18 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( -. 2 || k \/ k = 2 ) )
7167, 70ecased 1386 . . . . . . . . . . . . . . . . 17 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> -. 2 || k )
72 prmnn 12807 . . . . . . . . . . . . . . . . . . . 20 |- ( k e. Prime -> k e. NN )
7372nnnn0d 9553 . . . . . . . . . . . . . . . . . . 19 |- ( k e. Prime -> k e. NN0 )
74 nn0oddm1d2 12595 . . . . . . . . . . . . . . . . . . 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 489 . . . . . . . . . . . . . . . . 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 10916 . . . . . . . . . . . . . . . 16 |- ( ( A e. ZZ /\ ( ( k - 1 ) / 2 ) e. NN0 ) -> ( A ^ ( ( k - 1 ) / 2 ) ) e. ZZ )
7966, 77, 78syl2anc 411 . . . . . . . . . . . . . . 15 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> ( A ^ ( ( k - 1 ) / 2 ) ) e. ZZ )
8079peano2zd 9703 . . . . . . . . . . . . . 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 488 . . . . . . . . . . . . . 14 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> k e. NN )
8280, 81zmodcld 10707 . . . . . . . . . . . . 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 9698 . . . . . . . . . . . 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 9604 . . . . . . . . . . . 12 |- ( ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) /\ -. k = 2 ) -> 1 e. ZZ )
8583, 84zsubcld 9705 . . . . . . . . . . 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 9596 . . . . . . . . . . . . 13 |- ( k e. NN -> k e. ZZ )
8786ad2antlr 489 . . . . . . . . . . . 12 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> k e. ZZ )
88 2z 9605 . . . . . . . . . . . 12 |- 2 e. ZZ
89 zdceq 9653 . . . . . . . . . . . 12 |- ( ( k e. ZZ /\ 2 e. ZZ ) -> DECID k = 2 )
9087, 88, 89sylancl 413 . . . . . . . . . . 11 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> DECID k = 2 )
9165, 85, 90ifcldadc 3652 . . . . . . . . . 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 544 . . . . . . . . . . 11 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> N e. ZZ )
94 neqne 2420 . . . . . . . . . . . 12 |- ( -. N = 0 -> N =/= 0 )
9594ad3antlr 493 . . . . . . . . . . 11 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> N =/= 0 )
96 pczcl 12996 . . . . . . . . . . 11 |- ( ( k e. Prime /\ ( N e. ZZ /\ N =/= 0 ) ) -> ( k pCnt N ) e. NN0 )
9792, 93, 95, 96syl12anc 1272 . . . . . . . . . 10 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ k e. Prime ) -> ( k pCnt N ) e. NN0 )
98 zexpcl 10916 . . . . . . . . . 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 411 . . . . . . . . 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 9604 . . . . . . . . 9 |- ( ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) /\ -. k e. Prime ) -> 1 e. ZZ )
101 prmdc 12827 . . . . . . . . . 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 3652 . . . . . . . 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 5771 . . . . . . 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 2309 . . . . . 6 |- ( ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) /\ k e. NN ) -> ( F ` k ) e. ZZ )
106 zmulcl 9631 . . . . . . 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 10826 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> seq 1 ( x. , F ) : NN --> ZZ )
109 simplr 529 . . . . . 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 11785 . . . . . 6 |- ( ( N e. ZZ /\ N =/= 0 ) -> ( abs ` N ) e. NN )
112109, 110, 111syl2anc 411 . . . . 5 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> ( abs ` N ) e. NN )
113108, 112ffvelcdmd 5813 . . . 4 |- ( ( ( A e. ZZ /\ N e. ZZ ) /\ -. N = 0 ) -> ( seq 1 ( x. , F ) ` ( abs ` N ) ) e. ZZ )
11420, 113zmulcld 9706 . . 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 9589 . . . 4 |- ( ( A e. ZZ /\ N e. ZZ ) -> 0 e. ZZ )
116 zdceq 9653 . . . 4 |- ( ( N e. ZZ /\ 0 e. ZZ ) -> DECID N = 0 )
11711, 115, 116syl2anc 411 . . 3 |- ( ( A e. ZZ /\ N e. ZZ ) -> DECID N = 0 )
1187, 114, 117ifcldadc 3652 . 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 2241 . . . 4 |- ( ( a = A /\ m = N ) -> ( m = 0 <-> N = 0 ) )
121 simpl 109 . . . . . . 7 |- ( ( a = A /\ m = N ) -> a = A )
122121oveq1d 6065 . . . . . 6 |- ( ( a = A /\ m = N ) -> ( a ^ 2 ) = ( A ^ 2 ) )
123122eqeq1d 2241 . . . . 5 |- ( ( a = A /\ m = N ) -> ( ( a ^ 2 ) = 1 <-> ( A ^ 2 ) = 1 ) )
124123ifbid 3644 . . . 4 |- ( ( a = A /\ m = N ) -> if ( ( a ^ 2 ) = 1 , 1 , 0 ) = if ( ( A ^ 2 ) = 1 , 1 , 0 ) )
125119breq1d 4119 . . . . . . 7 |- ( ( a = A /\ m = N ) -> ( m < 0 <-> N < 0 ) )
126121breq1d 4119 . . . . . . 7 |- ( ( a = A /\ m = N ) -> ( a < 0 <-> A < 0 ) )
127125, 126anbi12d 473 . . . . . 6 |- ( ( a = A /\ m = N ) -> ( ( m < 0 /\ a < 0 ) <-> ( N < 0 /\ A < 0 ) ) )
128127ifbid 3644 . . . . 5 |- ( ( a = A /\ m = N ) -> if ( ( m < 0 /\ a < 0 ) , -u 1 , 1 ) = if ( ( N < 0 /\ A < 0 ) , -u 1 , 1 ) )
129121breq2d 4121 . . . . . . . . . . . . 13 |- ( ( a = A /\ m = N ) -> ( 2 || a <-> 2 || A ) )
130121oveq1d 6065 . . . . . . . . . . . . . . 15 |- ( ( a = A /\ m = N ) -> ( a mod 8 ) = ( A mod 8 ) )
131130eleq1d 2301 . . . . . . . . . . . . . 14 |- ( ( a = A /\ m = N ) -> ( ( a mod 8 ) e. { 1 , 7 } <-> ( A mod 8 ) e. { 1 , 7 } ) )
132131ifbid 3644 . . . . . . . . . . . . 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 3647 . . . . . . . . . . . 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 6065 . . . . . . . . . . . . . . 15 |- ( ( a = A /\ m = N ) -> ( a ^ ( ( n - 1 ) / 2 ) ) = ( A ^ ( ( n - 1 ) / 2 ) ) )
135134oveq1d 6065 . . . . . . . . . . . . . 14 |- ( ( a = A /\ m = N ) -> ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) = ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) )
136135oveq1d 6065 . . . . . . . . . . . . 13 |- ( ( a = A /\ m = N ) -> ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) = ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) )
137136oveq1d 6065 . . . . . . . . . . . 12 |- ( ( a = A /\ m = N ) -> ( ( ( ( a ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) = ( ( ( ( A ^ ( ( n - 1 ) / 2 ) ) + 1 ) mod n ) - 1 ) )
138133, 137ifeq12d 3642 . . . . . . . . . . 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 6066 . . . . . . . . . . 11 |- ( ( a = A /\ m = N ) -> ( n pCnt m ) = ( n pCnt N ) )
140138, 139oveq12d 6068 . . . . . . . . . 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 3640 . . . . . . . . 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 4201 . . . . . . . 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 2283 . . . . . . 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 10817 . . . . . 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 5674 . . . . . 6 |- ( ( a = A /\ m = N ) -> ( abs ` m ) = ( abs ` N ) )
146144, 145fveq12d 5677 . . . . 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 6068 . . . 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 3649 . . 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 15871 . . 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 6183 . 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 1375 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 716  DECID wdc 842   = wceq 1398   e. wcel 2203   =/= wne 2412   ifcif 3620   {cpr 3690   class class class wbr 4109   |-> cmpt 4171   ` cfv 5352  (class class class)co 6050   0cc0 8127   1c1 8128   + caddc 8130   x. cmul 8132   < clt 8308   - cmin 8444   -ucneg 8445   / cdiv 8946   NNcn 9237   2c2 9288   7c7 9293   8c8 9294   NN0cn0 9496   ZZcz 9577   mod cmo 10684   seqcseq 10809   ^cexp 10900   abscabs 11682   || cdvds 12473   Primecprime 12804   pCnt cpc 12982   /Lclgs 15870
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 2205  ax-14 2206  ax-ext 2214  ax-coll 4225  ax-sep 4228  ax-nul 4236  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-iinf 4710  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-mulrcl 8226  ax-addcom 8227  ax-mulcom 8228  ax-addass 8229  ax-mulass 8230  ax-distr 8231  ax-i2m1 8232  ax-0lt1 8233  ax-1rid 8234  ax-0id 8235  ax-rnegex 8236  ax-precex 8237  ax-cnre 8238  ax-pre-ltirr 8239  ax-pre-ltwlin 8240  ax-pre-lttrn 8241  ax-pre-apti 8242  ax-pre-ltadd 8243  ax-pre-mulgt0 8244  ax-pre-mulext 8245  ax-arch 8246  ax-caucvg 8247
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 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-reu 2527  df-rmo 2528  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-if 3621  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-iun 3993  df-br 4110  df-opab 4172  df-mpt 4173  df-tr 4209  df-id 4414  df-po 4417  df-iso 4418  df-iord 4487  df-on 4489  df-ilim 4490  df-suc 4492  df-iom 4713  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-f1 5357  df-fo 5358  df-f1o 5359  df-fv 5360  df-isom 5361  df-riota 6003  df-ov 6053  df-oprab 6054  df-mpo 6055  df-1st 6334  df-2nd 6335  df-recs 6536  df-frec 6622  df-1o 6647  df-2o 6648  df-er 6767  df-en 6976  df-fin 6978  df-sup 7275  df-inf 7276  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-sub 8446  df-neg 8447  df-reap 8849  df-ap 8856  df-div 8947  df-inn 9238  df-2 9296  df-3 9297  df-4 9298  df-5 9299  df-6 9300  df-7 9301  df-8 9302  df-n0 9497  df-z 9578  df-uz 9854  df-q 9952  df-rp 9987  df-fz 10343  df-fzo 10477  df-fl 10630  df-mod 10685  df-seqfrec 10810  df-exp 10901  df-cj 11527  df-re 11528  df-im 11529  df-rsqrt 11683  df-abs 11684  df-dvds 12474  df-gcd 12650  df-prm 12805  df-pc 12983  df-lgs 15871
This theorem is referenced by:  lgscllem  15880  lgsval2lem  15883  lgs0  15886  lgsval4  15893
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