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Theorem m1lgs 16370
Description: The first supplement to the law of quadratic reciprocity. Negative one is a square mod an odd prime P iff P == 1 (mod 4). See first case of theorem 9.4 in [ApostolNT] p. 181. (Contributed by Mario Carneiro, 19-Jun-2015.)
Assertion
Ref Expression
m1lgs |- ( P e. ( Prime \ { 2 } ) -> ( ( -u 1 /L P ) = 1 <-> ( P mod 4 ) = 1 ) )
Proof of Theorem m1lgs
StepHypRef Expression
1 neg1z 9681 . . . . . . . . 9 |- -u 1 e. ZZ
2 oddprm 13061 . . . . . . . . . 10 |- ( P e. ( Prime \ { 2 } ) -> ( ( P - 1 ) / 2 ) e. NN )
32nnnn0d 9625 . . . . . . . . 9 |- ( P e. ( Prime \ { 2 } ) -> ( ( P - 1 ) / 2 ) e. NN0 )
4 zexpcl 11006 . . . . . . . . 9 |- ( ( -u 1 e. ZZ /\ ( ( P - 1 ) / 2 ) e. NN0 ) -> ( -u 1 ^ ( ( P - 1 ) / 2 ) ) e. ZZ )
51, 3, 4sylancr 418 . . . . . . . 8 |- ( P e. ( Prime \ { 2 } ) -> ( -u 1 ^ ( ( P - 1 ) / 2 ) ) e. ZZ )
65peano2zd 9776 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) e. ZZ )
7 eldifi 3351 . . . . . . . 8 |- ( P e. ( Prime \ { 2 } ) -> P e. Prime )
8 prmnn 12907 . . . . . . . 8 |- ( P e. Prime -> P e. NN )
97, 8syl 14 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> P e. NN )
106, 9zmodcld 10797 . . . . . 6 |- ( P e. ( Prime \ { 2 } ) -> ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. NN0 )
1110nn0cnd 9627 . . . . 5 |- ( P e. ( Prime \ { 2 } ) -> ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) e. CC )
12 1cnd 8343 . . . . 5 |- ( P e. ( Prime \ { 2 } ) -> 1 e. CC )
1311, 12, 12subaddd 8657 . . . 4 |- ( P e. ( Prime \ { 2 } ) -> ( ( ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) - 1 ) = 1 <-> ( 1 + 1 ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) ) )
14 2z 9677 . . . . . . . . 9 |- 2 e. ZZ
15 zq 10036 . . . . . . . . 9 |- ( 2 e. ZZ -> 2 e. QQ )
1614, 15ax-mp 5 . . . . . . . 8 |- 2 e. QQ
1716a1i 9 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> 2 e. QQ )
18 prmz 12908 . . . . . . . 8 |- ( P e. Prime -> P e. ZZ )
19 zq 10036 . . . . . . . 8 |- ( P e. ZZ -> P e. QQ )
207, 18, 193syl 17 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> P e. QQ )
21 0le2 9397 . . . . . . . 8 |- 0 <_ 2
2221a1i 9 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> 0 <_ 2 )
23 oddprmgt2 12932 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> 2 < P )
24 modqid 10801 . . . . . . 7 |- ( ( ( 2 e. QQ /\ P e. QQ ) /\ ( 0 <_ 2 /\ 2 < P ) ) -> ( 2 mod P ) = 2 )
2517, 20, 22, 23, 24syl22anc 1279 . . . . . 6 |- ( P e. ( Prime \ { 2 } ) -> ( 2 mod P ) = 2 )
26 df-2 9366 . . . . . 6 |- 2 = ( 1 + 1 )
2725, 26eqtrdi 2287 . . . . 5 |- ( P e. ( Prime \ { 2 } ) -> ( 2 mod P ) = ( 1 + 1 ) )
2827eqeq1d 2247 . . . 4 |- ( P e. ( Prime \ { 2 } ) -> ( ( 2 mod P ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) <-> ( 1 + 1 ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) ) )
29 2nn 9471 . . . . . . . 8 |- 2 e. NN
302nnzd 9772 . . . . . . . 8 |- ( P e. ( Prime \ { 2 } ) -> ( ( P - 1 ) / 2 ) e. ZZ )
31 dvdsdc 12584 . . . . . . . 8 |- ( ( 2 e. NN /\ ( ( P - 1 ) / 2 ) e. ZZ ) -> DECID 2 || ( ( P - 1 ) / 2 ) )
3229, 30, 31sylancr 418 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> DECID 2 || ( ( P - 1 ) / 2 ) )
33 eldifsni 3843 . . . . . . . . . . . 12 |- ( P e. ( Prime \ { 2 } ) -> P =/= 2 )
3433neneqd 2441 . . . . . . . . . . 11 |- ( P e. ( Prime \ { 2 } ) -> -. P = 2 )
35 prmuz2 12929 . . . . . . . . . . . . 13 |- ( P e. Prime -> P e. ( ZZ>= ` 2 ) )
367, 35syl 14 . . . . . . . . . . . 12 |- ( P e. ( Prime \ { 2 } ) -> P e. ( ZZ>= ` 2 ) )
37 2prm 12924 . . . . . . . . . . . 12 |- 2 e. Prime
38 dvdsprm 12935 . . . . . . . . . . . 12 |- ( ( P e. ( ZZ>= ` 2 ) /\ 2 e. Prime ) -> ( P || 2 <-> P = 2 ) )
3936, 37, 38sylancl 417 . . . . . . . . . . 11 |- ( P e. ( Prime \ { 2 } ) -> ( P || 2 <-> P = 2 ) )
4034, 39mtbird 684 . . . . . . . . . 10 |- ( P e. ( Prime \ { 2 } ) -> -. P || 2 )
4140adantr 276 . . . . . . . . 9 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> -. P || 2 )
42 1cnd 8343 . . . . . . . . . . . . . . . 16 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> 1 e. CC )
432adantr 276 . . . . . . . . . . . . . . . 16 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( ( P - 1 ) / 2 ) e. NN )
44 simpr 110 . . . . . . . . . . . . . . . 16 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> -. 2 || ( ( P - 1 ) / 2 ) )
45 oexpneg 12663 . . . . . . . . . . . . . . . 16 |- ( ( 1 e. CC /\ ( ( P - 1 ) / 2 ) e. NN /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( -u 1 ^ ( ( P - 1 ) / 2 ) ) = -u ( 1 ^ ( ( P - 1 ) / 2 ) ) )
4642, 43, 44, 45syl3anc 1278 . . . . . . . . . . . . . . 15 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( -u 1 ^ ( ( P - 1 ) / 2 ) ) = -u ( 1 ^ ( ( P - 1 ) / 2 ) ) )
4743nnzd 9772 . . . . . . . . . . . . . . . . 17 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( ( P - 1 ) / 2 ) e. ZZ )
48 1exp 11020 . . . . . . . . . . . . . . . . 17 |- ( ( ( P - 1 ) / 2 ) e. ZZ -> ( 1 ^ ( ( P - 1 ) / 2 ) ) = 1 )
4947, 48syl 14 . . . . . . . . . . . . . . . 16 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( 1 ^ ( ( P - 1 ) / 2 ) ) = 1 )
5049negeqd 8523 . . . . . . . . . . . . . . 15 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> -u ( 1 ^ ( ( P - 1 ) / 2 ) ) = -u 1 )
5146, 50eqtrd 2271 . . . . . . . . . . . . . 14 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( -u 1 ^ ( ( P - 1 ) / 2 ) ) = -u 1 )
5251oveq1d 6100 . . . . . . . . . . . . 13 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) = ( -u 1 + 1 ) )
53 ax-1cn 8273 . . . . . . . . . . . . . 14 |- 1 e. CC
54 neg1cn 9412 . . . . . . . . . . . . . 14 |- -u 1 e. CC
55 1pneg1e0 9418 . . . . . . . . . . . . . 14 |- ( 1 + -u 1 ) = 0
5653, 54, 55addcomli 8473 . . . . . . . . . . . . 13 |- ( -u 1 + 1 ) = 0
5752, 56eqtrdi 2287 . . . . . . . . . . . 12 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) = 0 )
5857oveq2d 6101 . . . . . . . . . . 11 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) = ( 2 - 0 ) )
59 2cn 9378 . . . . . . . . . . . 12 |- 2 e. CC
6059subid1i 8600 . . . . . . . . . . 11 |- ( 2 - 0 ) = 2
6158, 60eqtrdi 2287 . . . . . . . . . 10 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) = 2 )
6261breq2d 4142 . . . . . . . . 9 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> ( P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) <-> P || 2 ) )
6341, 62mtbird 684 . . . . . . . 8 |- ( ( P e. ( Prime \ { 2 } ) /\ -. 2 || ( ( P - 1 ) / 2 ) ) -> -. P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) )
6463ex 115 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> ( -. 2 || ( ( P - 1 ) / 2 ) -> -. P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) ) )
65 condc 865 . . . . . . 7 |- (DECID 2 || ( ( P - 1 ) / 2 ) -> ( ( -. 2 || ( ( P - 1 ) / 2 ) -> -. P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) ) -> ( P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) -> 2 || ( ( P - 1 ) / 2 ) ) ) )
6632, 64, 65sylc 62 . . . . . 6 |- ( P e. ( Prime \ { 2 } ) -> ( P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) -> 2 || ( ( P - 1 ) / 2 ) ) )
6714a1i 9 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> 2 e. ZZ )
68 moddvds 12585 . . . . . . 7 |- ( ( P e. NN /\ 2 e. ZZ /\ ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) e. ZZ ) -> ( ( 2 mod P ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) <-> P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) ) )
699, 67, 6, 68syl3anc 1278 . . . . . 6 |- ( P e. ( Prime \ { 2 } ) -> ( ( 2 mod P ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) <-> P || ( 2 - ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) ) ) )
70 4z 9679 . . . . . . . . 9 |- 4 e. ZZ
71 4ne0 9405 . . . . . . . . 9 |- 4 =/= 0
72 nnm1nn0 9609 . . . . . . . . . . 11 |- ( P e. NN -> ( P - 1 ) e. NN0 )
739, 72syl 14 . . . . . . . . . 10 |- ( P e. ( Prime \ { 2 } ) -> ( P - 1 ) e. NN0 )
7473nn0zd 9771 . . . . . . . . 9 |- ( P e. ( Prime \ { 2 } ) -> ( P - 1 ) e. ZZ )
75 dvdsval2 12576 . . . . . . . . 9 |- ( ( 4 e. ZZ /\ 4 =/= 0 /\ ( P - 1 ) e. ZZ ) -> ( 4 || ( P - 1 ) <-> ( ( P - 1 ) / 4 ) e. ZZ ) )
7670, 71, 74, 75mp3an12i 1382 . . . . . . . 8 |- ( P e. ( Prime \ { 2 } ) -> ( 4 || ( P - 1 ) <-> ( ( P - 1 ) / 4 ) e. ZZ ) )
7773nn0cnd 9627 . . . . . . . . . . 11 |- ( P e. ( Prime \ { 2 } ) -> ( P - 1 ) e. CC )
7859a1i 9 . . . . . . . . . . 11 |- ( P e. ( Prime \ { 2 } ) -> 2 e. CC )
7929a1i 9 . . . . . . . . . . . 12 |- ( P e. ( Prime \ { 2 } ) -> 2 e. NN )
8079nnap0d 9353 . . . . . . . . . . 11 |- ( P e. ( Prime \ { 2 } ) -> 2 # 0 )
8177, 78, 78, 80, 80divdivap1d 9155 . . . . . . . . . 10 |- ( P e. ( Prime \ { 2 } ) -> ( ( ( P - 1 ) / 2 ) / 2 ) = ( ( P - 1 ) / ( 2 x. 2 ) ) )
82 2t2e4 9462 . . . . . . . . . . 11 |- ( 2 x. 2 ) = 4
8382oveq2i 6096 . . . . . . . . . 10 |- ( ( P - 1 ) / ( 2 x. 2 ) ) = ( ( P - 1 ) / 4 )
8481, 83eqtrdi 2287 . . . . . . . . 9 |- ( P e. ( Prime \ { 2 } ) -> ( ( ( P - 1 ) / 2 ) / 2 ) = ( ( P - 1 ) / 4 ) )
8584eleq1d 2307 . . . . . . . 8 |- ( P e. ( Prime \ { 2 } ) -> ( ( ( ( P - 1 ) / 2 ) / 2 ) e. ZZ <-> ( ( P - 1 ) / 4 ) e. ZZ ) )
8676, 85bitr4d 191 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> ( 4 || ( P - 1 ) <-> ( ( ( P - 1 ) / 2 ) / 2 ) e. ZZ ) )
87 2ne0 9399 . . . . . . . 8 |- 2 =/= 0
88 dvdsval2 12576 . . . . . . . 8 |- ( ( 2 e. ZZ /\ 2 =/= 0 /\ ( ( P - 1 ) / 2 ) e. ZZ ) -> ( 2 || ( ( P - 1 ) / 2 ) <-> ( ( ( P - 1 ) / 2 ) / 2 ) e. ZZ ) )
8914, 87, 30, 88mp3an12i 1382 . . . . . . 7 |- ( P e. ( Prime \ { 2 } ) -> ( 2 || ( ( P - 1 ) / 2 ) <-> ( ( ( P - 1 ) / 2 ) / 2 ) e. ZZ ) )
9086, 89bitr4d 191 . . . . . 6 |- ( P e. ( Prime \ { 2 } ) -> ( 4 || ( P - 1 ) <-> 2 || ( ( P - 1 ) / 2 ) ) )
9166, 69, 903imtr4d 203 . . . . 5 |- ( P e. ( Prime \ { 2 } ) -> ( ( 2 mod P ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) -> 4 || ( P - 1 ) ) )
9254a1i 9 . . . . . . . . . . 11 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> -u 1 e. CC )
93 neg1ap0 9416 . . . . . . . . . . . 12 |- -u 1 # 0
9493a1i 9 . . . . . . . . . . 11 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> -u 1 # 0 )
9514a1i 9 . . . . . . . . . . 11 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> 2 e. ZZ )
9686biimpa 296 . . . . . . . . . . 11 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( ( ( P - 1 ) / 2 ) / 2 ) e. ZZ )
97 expmulzap 11037 . . . . . . . . . . 11 |- ( ( ( -u 1 e. CC /\ -u 1 # 0 ) /\ ( 2 e. ZZ /\ ( ( ( P - 1 ) / 2 ) / 2 ) e. ZZ ) ) -> ( -u 1 ^ ( 2 x. ( ( ( P - 1 ) / 2 ) / 2 ) ) ) = ( ( -u 1 ^ 2 ) ^ ( ( ( P - 1 ) / 2 ) / 2 ) ) )
9892, 94, 95, 96, 97syl22anc 1279 . . . . . . . . . 10 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( -u 1 ^ ( 2 x. ( ( ( P - 1 ) / 2 ) / 2 ) ) ) = ( ( -u 1 ^ 2 ) ^ ( ( ( P - 1 ) / 2 ) / 2 ) ) )
992nncnd 9321 . . . . . . . . . . . . 13 |- ( P e. ( Prime \ { 2 } ) -> ( ( P - 1 ) / 2 ) e. CC )
10099, 78, 80divcanap2d 9125 . . . . . . . . . . . 12 |- ( P e. ( Prime \ { 2 } ) -> ( 2 x. ( ( ( P - 1 ) / 2 ) / 2 ) ) = ( ( P - 1 ) / 2 ) )
101100adantr 276 . . . . . . . . . . 11 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( 2 x. ( ( ( P - 1 ) / 2 ) / 2 ) ) = ( ( P - 1 ) / 2 ) )
102101oveq2d 6101 . . . . . . . . . 10 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( -u 1 ^ ( 2 x. ( ( ( P - 1 ) / 2 ) / 2 ) ) ) = ( -u 1 ^ ( ( P - 1 ) / 2 ) ) )
103 neg1sqe1 11086 . . . . . . . . . . . 12 |- ( -u 1 ^ 2 ) = 1
104103oveq1i 6095 . . . . . . . . . . 11 |- ( ( -u 1 ^ 2 ) ^ ( ( ( P - 1 ) / 2 ) / 2 ) ) = ( 1 ^ ( ( ( P - 1 ) / 2 ) / 2 ) )
105 1exp 11020 . . . . . . . . . . . 12 |- ( ( ( ( P - 1 ) / 2 ) / 2 ) e. ZZ -> ( 1 ^ ( ( ( P - 1 ) / 2 ) / 2 ) ) = 1 )
10696, 105syl 14 . . . . . . . . . . 11 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( 1 ^ ( ( ( P - 1 ) / 2 ) / 2 ) ) = 1 )
107104, 106eqtrid 2283 . . . . . . . . . 10 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( ( -u 1 ^ 2 ) ^ ( ( ( P - 1 ) / 2 ) / 2 ) ) = 1 )
10898, 102, 1073eqtr3d 2279 . . . . . . . . 9 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( -u 1 ^ ( ( P - 1 ) / 2 ) ) = 1 )
109108oveq1d 6100 . . . . . . . 8 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) = ( 1 + 1 ) )
11026, 109eqtr4id 2290 . . . . . . 7 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> 2 = ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) )
111110oveq1d 6100 . . . . . 6 |- ( ( P e. ( Prime \ { 2 } ) /\ 4 || ( P - 1 ) ) -> ( 2 mod P ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) )
112111ex 115 . . . . 5 |- ( P e. ( Prime \ { 2 } ) -> ( 4 || ( P - 1 ) -> ( 2 mod P ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) ) )
11391, 112impbid 129 . . . 4 |- ( P e. ( Prime \ { 2 } ) -> ( ( 2 mod P ) = ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) <-> 4 || ( P - 1 ) ) )
11413, 28, 1133bitr2d 216 . . 3 |- ( P e. ( Prime \ { 2 } ) -> ( ( ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) - 1 ) = 1 <-> 4 || ( P - 1 ) ) )
115 lgsval3 16303 . . . . 5 |- ( ( -u 1 e. ZZ /\ P e. ( Prime \ { 2 } ) ) -> ( -u 1 /L P ) = ( ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) - 1 ) )
1161, 115mpan 428 . . . 4 |- ( P e. ( Prime \ { 2 } ) -> ( -u 1 /L P ) = ( ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) - 1 ) )
117116eqeq1d 2247 . . 3 |- ( P e. ( Prime \ { 2 } ) -> ( ( -u 1 /L P ) = 1 <-> ( ( ( ( -u 1 ^ ( ( P - 1 ) / 2 ) ) + 1 ) mod P ) - 1 ) = 1 ) )
118 4nn 9473 . . . . 5 |- 4 e. NN
119118a1i 9 . . . 4 |- ( P e. ( Prime \ { 2 } ) -> 4 e. NN )
1207, 18syl 14 . . . 4 |- ( P e. ( Prime \ { 2 } ) -> P e. ZZ )
121 1zzd 9676 . . . 4 |- ( P e. ( Prime \ { 2 } ) -> 1 e. ZZ )
122 moddvds 12585 . . . 4 |- ( ( 4 e. NN /\ P e. ZZ /\ 1 e. ZZ ) -> ( ( P mod 4 ) = ( 1 mod 4 ) <-> 4 || ( P - 1 ) ) )
123119, 120, 121, 122syl3anc 1278 . . 3 |- ( P e. ( Prime \ { 2 } ) -> ( ( P mod 4 ) = ( 1 mod 4 ) <-> 4 || ( P - 1 ) ) )
124114, 117, 1233bitr4d 220 . 2 |- ( P e. ( Prime \ { 2 } ) -> ( ( -u 1 /L P ) = 1 <-> ( P mod 4 ) = ( 1 mod 4 ) ) )
125 1z 9675 . . . . 5 |- 1 e. ZZ
126 zq 10036 . . . . 5 |- ( 1 e. ZZ -> 1 e. QQ )
127125, 126ax-mp 5 . . . 4 |- 1 e. QQ
128 zq 10036 . . . . 5 |- ( 4 e. ZZ -> 4 e. QQ )
12970, 128ax-mp 5 . . . 4 |- 4 e. QQ
130 0le1 8811 . . . 4 |- 0 <_ 1
131 1lt4 9484 . . . 4 |- 1 < 4
132 modqid 10801 . . . 4 |- ( ( ( 1 e. QQ /\ 4 e. QQ ) /\ ( 0 <_ 1 /\ 1 < 4 ) ) -> ( 1 mod 4 ) = 1 )
133127, 129, 130, 131, 132mp4an 431 . . 3 |- ( 1 mod 4 ) = 1
134133eqeq2i 2249 . 2 |- ( ( P mod 4 ) = ( 1 mod 4 ) <-> ( P mod 4 ) = 1 )
135124, 134bitrdi 196 1 |- ( P e. ( Prime \ { 2 } ) -> ( ( -u 1 /L P ) = 1 <-> ( P mod 4 ) = 1 ) )
Colors of variables:    wff set class
This proof depends on syntax axioms:   -. wn 3   -> wi 4   /\ wa 104   <-> wb 105  DECID wdc 846   = wceq 1402   e. wcel 2209   =/= wne 2420   \ cdif 3217   {csn 3709   class class class wbr 4130   ` cfv 5377  (class class class)co 6085   CCcc 8178   0cc0 8180   1c1 8181   + caddc 8183   x. cmul 8185   < clt 8361   <_ cle 8362   - cmin 8499   -ucneg 8500   # cap 8912   / cdiv 9005   NNcn 9307   2c2 9358   4c4 9360   NN0cn0 9568   ZZcz 9649   ZZ>=cuz 9931   QQcq 10029   mod cmo 10774   ^cexp 10990   || cdvds 12573   Primecprime 12904   /Lclgs 16282
This proof depends on 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 4246  ax-sep 4249  ax-nul 4259  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684  ax-iinf 4735  ax-cnex 8271  ax-resscn 8272  ax-1cn 8273  ax-1re 8274  ax-icn 8275  ax-addcl 8276  ax-addrcl 8277  ax-mulcl 8278  ax-mulrcl 8279  ax-addcom 8280  ax-mulcom 8281  ax-addass 8282  ax-mulass 8283  ax-distr 8284  ax-i2m1 8285  ax-0lt1 8286  ax-1rid 8287  ax-0id 8288  ax-rnegex 8289  ax-precex 8290  ax-cnre 8291  ax-pre-ltirr 8292  ax-pre-ltwlin 8293  ax-pre-lttrn 8294  ax-pre-apti 8295  ax-pre-ltadd 8296  ax-pre-mulgt0 8297  ax-pre-mulext 8298  ax-arch 8299  ax-caucvg 8300
This proof 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 3639  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-iun 4014  df-br 4131  df-opab 4193  df-mpt 4194  df-tr 4230  df-id 4438  df-po 4441  df-iso 4442  df-iord 4511  df-on 4513  df-ilim 4514  df-suc 4516  df-iom 4738  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-isom 5386  df-riota 6038  df-ov 6088  df-oprab 6089  df-mpo 6090  df-1st 6374  df-2nd 6375  df-recs 6576  df-irdg 6641  df-frec 6662  df-1o 6687  df-2o 6688  df-oadd 6691  df-er 6807  df-en 7023  df-dom 7024  df-fin 7025  df-sup 7325  df-inf 7326  df-pnf 8363  df-mnf 8364  df-xr 8365  df-ltxr 8366  df-le 8367  df-sub 8501  df-neg 8502  df-reap 8906  df-ap 8913  df-div 9006  df-inn 9308  df-2 9366  df-3 9367  df-4 9368  df-5 9369  df-6 9370  df-7 9371  df-8 9372  df-n0 9569  df-z 9650  df-uz 9932  df-q 10030  df-rp 10066  df-fz 10423  df-fzo 10561  df-fl 10716  df-mod 10775  df-seqfrec 10900  df-exp 10991  df-ihash 11231  df-cj 11623  df-re 11624  df-im 11625  df-rsqrt 11780  df-abs 11781  df-clim 12064  df-proddc 12337  df-dvds 12574  df-gcd 12750  df-prm 12905  df-phi 13012  df-pc 13087  df-lgs 16283
This theorem is used by: (None)
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