| Step |
Hyp |
Ref |
Expression |
| 1 |
|
zre |
|- ( A e. ZZ -> A e. RR ) |
| 2 |
1
|
3ad2ant1 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> A e. RR ) |
| 3 |
|
2rp |
|- 2 e. RR+ |
| 4 |
3
|
a1i |
|- ( N e. NN -> 2 e. RR+ ) |
| 5 |
|
nnz |
|- ( N e. NN -> N e. ZZ ) |
| 6 |
4 5
|
rpexpcld |
|- ( N e. NN -> ( 2 ^ N ) e. RR+ ) |
| 7 |
6
|
rpred |
|- ( N e. NN -> ( 2 ^ N ) e. RR ) |
| 8 |
7
|
3ad2ant3 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 2 ^ N ) e. RR ) |
| 9 |
2 8
|
resubcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( A - ( 2 ^ N ) ) e. RR ) |
| 10 |
6
|
3ad2ant3 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 2 ^ N ) e. RR+ ) |
| 11 |
9 10
|
modcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) e. RR ) |
| 12 |
9 11
|
resubcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - ( 2 ^ N ) ) - ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) e. RR ) |
| 13 |
|
peano2zm |
|- ( A e. ZZ -> ( A - 1 ) e. ZZ ) |
| 14 |
13
|
zred |
|- ( A e. ZZ -> ( A - 1 ) e. RR ) |
| 15 |
14
|
3ad2ant1 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( A - 1 ) e. RR ) |
| 16 |
15 10
|
modcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - 1 ) mod ( 2 ^ N ) ) e. RR ) |
| 17 |
15 16
|
resubcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - 1 ) - ( ( A - 1 ) mod ( 2 ^ N ) ) ) e. RR ) |
| 18 |
|
1red |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> 1 e. RR ) |
| 19 |
18 16
|
readdcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 1 + ( ( A - 1 ) mod ( 2 ^ N ) ) ) e. RR ) |
| 20 |
8 11
|
readdcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( 2 ^ N ) + ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) e. RR ) |
| 21 |
|
2nn |
|- 2 e. NN |
| 22 |
21
|
a1i |
|- ( N e. NN -> 2 e. NN ) |
| 23 |
|
nnnn0 |
|- ( N e. NN -> N e. NN0 ) |
| 24 |
22 23
|
nnexpcld |
|- ( N e. NN -> ( 2 ^ N ) e. NN ) |
| 25 |
24
|
anim2i |
|- ( ( A e. ZZ /\ N e. NN ) -> ( A e. ZZ /\ ( 2 ^ N ) e. NN ) ) |
| 26 |
25
|
3adant2 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( A e. ZZ /\ ( 2 ^ N ) e. NN ) ) |
| 27 |
|
m1modmmod |
|- ( ( A e. ZZ /\ ( 2 ^ N ) e. NN ) -> ( ( ( A - 1 ) mod ( 2 ^ N ) ) - ( A mod ( 2 ^ N ) ) ) = if ( ( A mod ( 2 ^ N ) ) = 0 , ( ( 2 ^ N ) - 1 ) , -u 1 ) ) |
| 28 |
26 27
|
syl |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( ( A - 1 ) mod ( 2 ^ N ) ) - ( A mod ( 2 ^ N ) ) ) = if ( ( A mod ( 2 ^ N ) ) = 0 , ( ( 2 ^ N ) - 1 ) , -u 1 ) ) |
| 29 |
|
nnz |
|- ( ( ( A - 1 ) / 2 ) e. NN -> ( ( A - 1 ) / 2 ) e. ZZ ) |
| 30 |
29
|
a1i |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( A - 1 ) / 2 ) e. NN -> ( ( A - 1 ) / 2 ) e. ZZ ) ) |
| 31 |
|
zcn |
|- ( A e. ZZ -> A e. CC ) |
| 32 |
|
xp1d2m1eqxm1d2 |
|- ( A e. CC -> ( ( ( A + 1 ) / 2 ) - 1 ) = ( ( A - 1 ) / 2 ) ) |
| 33 |
32
|
eqcomd |
|- ( A e. CC -> ( ( A - 1 ) / 2 ) = ( ( ( A + 1 ) / 2 ) - 1 ) ) |
| 34 |
31 33
|
syl |
|- ( A e. ZZ -> ( ( A - 1 ) / 2 ) = ( ( ( A + 1 ) / 2 ) - 1 ) ) |
| 35 |
34
|
adantr |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A - 1 ) / 2 ) = ( ( ( A + 1 ) / 2 ) - 1 ) ) |
| 36 |
35
|
eleq1d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( A - 1 ) / 2 ) e. ZZ <-> ( ( ( A + 1 ) / 2 ) - 1 ) e. ZZ ) ) |
| 37 |
|
peano2z |
|- ( ( ( ( A + 1 ) / 2 ) - 1 ) e. ZZ -> ( ( ( ( A + 1 ) / 2 ) - 1 ) + 1 ) e. ZZ ) |
| 38 |
31
|
adantr |
|- ( ( A e. ZZ /\ N e. NN ) -> A e. CC ) |
| 39 |
|
1cnd |
|- ( ( A e. ZZ /\ N e. NN ) -> 1 e. CC ) |
| 40 |
38 39
|
addcld |
|- ( ( A e. ZZ /\ N e. NN ) -> ( A + 1 ) e. CC ) |
| 41 |
40
|
halfcld |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A + 1 ) / 2 ) e. CC ) |
| 42 |
41 39
|
npcand |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( ( A + 1 ) / 2 ) - 1 ) + 1 ) = ( ( A + 1 ) / 2 ) ) |
| 43 |
42
|
eleq1d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( ( ( A + 1 ) / 2 ) - 1 ) + 1 ) e. ZZ <-> ( ( A + 1 ) / 2 ) e. ZZ ) ) |
| 44 |
37 43
|
imbitrid |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( ( A + 1 ) / 2 ) - 1 ) e. ZZ -> ( ( A + 1 ) / 2 ) e. ZZ ) ) |
| 45 |
36 44
|
sylbid |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( A - 1 ) / 2 ) e. ZZ -> ( ( A + 1 ) / 2 ) e. ZZ ) ) |
| 46 |
|
mod0 |
|- ( ( A e. RR /\ ( 2 ^ N ) e. RR+ ) -> ( ( A mod ( 2 ^ N ) ) = 0 <-> ( A / ( 2 ^ N ) ) e. ZZ ) ) |
| 47 |
1 6 46
|
syl2an |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A mod ( 2 ^ N ) ) = 0 <-> ( A / ( 2 ^ N ) ) e. ZZ ) ) |
| 48 |
22
|
nnzd |
|- ( N e. NN -> 2 e. ZZ ) |
| 49 |
|
nnm1nn0 |
|- ( N e. NN -> ( N - 1 ) e. NN0 ) |
| 50 |
48 49
|
zexpcld |
|- ( N e. NN -> ( 2 ^ ( N - 1 ) ) e. ZZ ) |
| 51 |
50
|
adantl |
|- ( ( A e. ZZ /\ N e. NN ) -> ( 2 ^ ( N - 1 ) ) e. ZZ ) |
| 52 |
51
|
adantr |
|- ( ( ( A e. ZZ /\ N e. NN ) /\ ( A / ( 2 ^ N ) ) e. ZZ ) -> ( 2 ^ ( N - 1 ) ) e. ZZ ) |
| 53 |
|
simpr |
|- ( ( ( A e. ZZ /\ N e. NN ) /\ ( A / ( 2 ^ N ) ) e. ZZ ) -> ( A / ( 2 ^ N ) ) e. ZZ ) |
| 54 |
52 53
|
zmulcld |
|- ( ( ( A e. ZZ /\ N e. NN ) /\ ( A / ( 2 ^ N ) ) e. ZZ ) -> ( ( 2 ^ ( N - 1 ) ) x. ( A / ( 2 ^ N ) ) ) e. ZZ ) |
| 55 |
54
|
ex |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A / ( 2 ^ N ) ) e. ZZ -> ( ( 2 ^ ( N - 1 ) ) x. ( A / ( 2 ^ N ) ) ) e. ZZ ) ) |
| 56 |
5
|
adantl |
|- ( ( A e. ZZ /\ N e. NN ) -> N e. ZZ ) |
| 57 |
56
|
zcnd |
|- ( ( A e. ZZ /\ N e. NN ) -> N e. CC ) |
| 58 |
39
|
negcld |
|- ( ( A e. ZZ /\ N e. NN ) -> -u 1 e. CC ) |
| 59 |
57 39
|
negsubd |
|- ( ( A e. ZZ /\ N e. NN ) -> ( N + -u 1 ) = ( N - 1 ) ) |
| 60 |
57 58 59
|
mvlladdcd |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( N - 1 ) - N ) = -u 1 ) |
| 61 |
60
|
oveq2d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( 2 ^ ( ( N - 1 ) - N ) ) = ( 2 ^ -u 1 ) ) |
| 62 |
|
2cnd |
|- ( ( A e. ZZ /\ N e. NN ) -> 2 e. CC ) |
| 63 |
|
2ne0 |
|- 2 =/= 0 |
| 64 |
63
|
a1i |
|- ( ( A e. ZZ /\ N e. NN ) -> 2 =/= 0 ) |
| 65 |
|
1zzd |
|- ( N e. NN -> 1 e. ZZ ) |
| 66 |
5 65
|
zsubcld |
|- ( N e. NN -> ( N - 1 ) e. ZZ ) |
| 67 |
66 5
|
jca |
|- ( N e. NN -> ( ( N - 1 ) e. ZZ /\ N e. ZZ ) ) |
| 68 |
67
|
adantl |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( N - 1 ) e. ZZ /\ N e. ZZ ) ) |
| 69 |
|
expsub |
|- ( ( ( 2 e. CC /\ 2 =/= 0 ) /\ ( ( N - 1 ) e. ZZ /\ N e. ZZ ) ) -> ( 2 ^ ( ( N - 1 ) - N ) ) = ( ( 2 ^ ( N - 1 ) ) / ( 2 ^ N ) ) ) |
| 70 |
62 64 68 69
|
syl21anc |
|- ( ( A e. ZZ /\ N e. NN ) -> ( 2 ^ ( ( N - 1 ) - N ) ) = ( ( 2 ^ ( N - 1 ) ) / ( 2 ^ N ) ) ) |
| 71 |
|
expn1 |
|- ( 2 e. CC -> ( 2 ^ -u 1 ) = ( 1 / 2 ) ) |
| 72 |
62 71
|
syl |
|- ( ( A e. ZZ /\ N e. NN ) -> ( 2 ^ -u 1 ) = ( 1 / 2 ) ) |
| 73 |
61 70 72
|
3eqtr3d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( 2 ^ ( N - 1 ) ) / ( 2 ^ N ) ) = ( 1 / 2 ) ) |
| 74 |
73
|
oveq2d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( A x. ( ( 2 ^ ( N - 1 ) ) / ( 2 ^ N ) ) ) = ( A x. ( 1 / 2 ) ) ) |
| 75 |
|
2cnd |
|- ( N e. NN -> 2 e. CC ) |
| 76 |
75 49
|
expcld |
|- ( N e. NN -> ( 2 ^ ( N - 1 ) ) e. CC ) |
| 77 |
76
|
adantl |
|- ( ( A e. ZZ /\ N e. NN ) -> ( 2 ^ ( N - 1 ) ) e. CC ) |
| 78 |
3
|
a1i |
|- ( ( A e. ZZ /\ N e. NN ) -> 2 e. RR+ ) |
| 79 |
78 56
|
rpexpcld |
|- ( ( A e. ZZ /\ N e. NN ) -> ( 2 ^ N ) e. RR+ ) |
| 80 |
79
|
rpcnne0d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( 2 ^ N ) e. CC /\ ( 2 ^ N ) =/= 0 ) ) |
| 81 |
|
div12 |
|- ( ( ( 2 ^ ( N - 1 ) ) e. CC /\ A e. CC /\ ( ( 2 ^ N ) e. CC /\ ( 2 ^ N ) =/= 0 ) ) -> ( ( 2 ^ ( N - 1 ) ) x. ( A / ( 2 ^ N ) ) ) = ( A x. ( ( 2 ^ ( N - 1 ) ) / ( 2 ^ N ) ) ) ) |
| 82 |
77 38 80 81
|
syl3anc |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( 2 ^ ( N - 1 ) ) x. ( A / ( 2 ^ N ) ) ) = ( A x. ( ( 2 ^ ( N - 1 ) ) / ( 2 ^ N ) ) ) ) |
| 83 |
38 62 64
|
divrecd |
|- ( ( A e. ZZ /\ N e. NN ) -> ( A / 2 ) = ( A x. ( 1 / 2 ) ) ) |
| 84 |
74 82 83
|
3eqtr4d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( 2 ^ ( N - 1 ) ) x. ( A / ( 2 ^ N ) ) ) = ( A / 2 ) ) |
| 85 |
84
|
eleq1d |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( 2 ^ ( N - 1 ) ) x. ( A / ( 2 ^ N ) ) ) e. ZZ <-> ( A / 2 ) e. ZZ ) ) |
| 86 |
55 85
|
sylibd |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A / ( 2 ^ N ) ) e. ZZ -> ( A / 2 ) e. ZZ ) ) |
| 87 |
47 86
|
sylbid |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A mod ( 2 ^ N ) ) = 0 -> ( A / 2 ) e. ZZ ) ) |
| 88 |
|
zeo2 |
|- ( A e. ZZ -> ( ( A / 2 ) e. ZZ <-> -. ( ( A + 1 ) / 2 ) e. ZZ ) ) |
| 89 |
88
|
adantr |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A / 2 ) e. ZZ <-> -. ( ( A + 1 ) / 2 ) e. ZZ ) ) |
| 90 |
87 89
|
sylibd |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( A mod ( 2 ^ N ) ) = 0 -> -. ( ( A + 1 ) / 2 ) e. ZZ ) ) |
| 91 |
90
|
necon2ad |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( A + 1 ) / 2 ) e. ZZ -> ( A mod ( 2 ^ N ) ) =/= 0 ) ) |
| 92 |
30 45 91
|
3syld |
|- ( ( A e. ZZ /\ N e. NN ) -> ( ( ( A - 1 ) / 2 ) e. NN -> ( A mod ( 2 ^ N ) ) =/= 0 ) ) |
| 93 |
92
|
ex |
|- ( A e. ZZ -> ( N e. NN -> ( ( ( A - 1 ) / 2 ) e. NN -> ( A mod ( 2 ^ N ) ) =/= 0 ) ) ) |
| 94 |
93
|
com23 |
|- ( A e. ZZ -> ( ( ( A - 1 ) / 2 ) e. NN -> ( N e. NN -> ( A mod ( 2 ^ N ) ) =/= 0 ) ) ) |
| 95 |
94
|
3imp |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( A mod ( 2 ^ N ) ) =/= 0 ) |
| 96 |
95
|
neneqd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> -. ( A mod ( 2 ^ N ) ) = 0 ) |
| 97 |
96
|
iffalsed |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> if ( ( A mod ( 2 ^ N ) ) = 0 , ( ( 2 ^ N ) - 1 ) , -u 1 ) = -u 1 ) |
| 98 |
28 97
|
eqtrd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( ( A - 1 ) mod ( 2 ^ N ) ) - ( A mod ( 2 ^ N ) ) ) = -u 1 ) |
| 99 |
|
neg1lt0 |
|- -u 1 < 0 |
| 100 |
|
2re |
|- 2 e. RR |
| 101 |
|
1lt2 |
|- 1 < 2 |
| 102 |
|
expgt1 |
|- ( ( 2 e. RR /\ N e. NN /\ 1 < 2 ) -> 1 < ( 2 ^ N ) ) |
| 103 |
100 101 102
|
mp3an13 |
|- ( N e. NN -> 1 < ( 2 ^ N ) ) |
| 104 |
|
1red |
|- ( N e. NN -> 1 e. RR ) |
| 105 |
104 7
|
posdifd |
|- ( N e. NN -> ( 1 < ( 2 ^ N ) <-> 0 < ( ( 2 ^ N ) - 1 ) ) ) |
| 106 |
103 105
|
mpbid |
|- ( N e. NN -> 0 < ( ( 2 ^ N ) - 1 ) ) |
| 107 |
104
|
renegcld |
|- ( N e. NN -> -u 1 e. RR ) |
| 108 |
|
0red |
|- ( N e. NN -> 0 e. RR ) |
| 109 |
7 104
|
resubcld |
|- ( N e. NN -> ( ( 2 ^ N ) - 1 ) e. RR ) |
| 110 |
|
lttr |
|- ( ( -u 1 e. RR /\ 0 e. RR /\ ( ( 2 ^ N ) - 1 ) e. RR ) -> ( ( -u 1 < 0 /\ 0 < ( ( 2 ^ N ) - 1 ) ) -> -u 1 < ( ( 2 ^ N ) - 1 ) ) ) |
| 111 |
107 108 109 110
|
syl3anc |
|- ( N e. NN -> ( ( -u 1 < 0 /\ 0 < ( ( 2 ^ N ) - 1 ) ) -> -u 1 < ( ( 2 ^ N ) - 1 ) ) ) |
| 112 |
106 111
|
mpan2d |
|- ( N e. NN -> ( -u 1 < 0 -> -u 1 < ( ( 2 ^ N ) - 1 ) ) ) |
| 113 |
99 112
|
mpi |
|- ( N e. NN -> -u 1 < ( ( 2 ^ N ) - 1 ) ) |
| 114 |
113
|
3ad2ant3 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> -u 1 < ( ( 2 ^ N ) - 1 ) ) |
| 115 |
98 114
|
eqbrtrd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( ( A - 1 ) mod ( 2 ^ N ) ) - ( A mod ( 2 ^ N ) ) ) < ( ( 2 ^ N ) - 1 ) ) |
| 116 |
2 10
|
modcld |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( A mod ( 2 ^ N ) ) e. RR ) |
| 117 |
|
ltsubadd2b |
|- ( ( ( 1 e. RR /\ ( 2 ^ N ) e. RR ) /\ ( ( A mod ( 2 ^ N ) ) e. RR /\ ( ( A - 1 ) mod ( 2 ^ N ) ) e. RR ) ) -> ( ( ( ( A - 1 ) mod ( 2 ^ N ) ) - ( A mod ( 2 ^ N ) ) ) < ( ( 2 ^ N ) - 1 ) <-> ( 1 + ( ( A - 1 ) mod ( 2 ^ N ) ) ) < ( ( 2 ^ N ) + ( A mod ( 2 ^ N ) ) ) ) ) |
| 118 |
18 8 116 16 117
|
syl22anc |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( ( ( A - 1 ) mod ( 2 ^ N ) ) - ( A mod ( 2 ^ N ) ) ) < ( ( 2 ^ N ) - 1 ) <-> ( 1 + ( ( A - 1 ) mod ( 2 ^ N ) ) ) < ( ( 2 ^ N ) + ( A mod ( 2 ^ N ) ) ) ) ) |
| 119 |
115 118
|
mpbid |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 1 + ( ( A - 1 ) mod ( 2 ^ N ) ) ) < ( ( 2 ^ N ) + ( A mod ( 2 ^ N ) ) ) ) |
| 120 |
|
modid0 |
|- ( ( 2 ^ N ) e. RR+ -> ( ( 2 ^ N ) mod ( 2 ^ N ) ) = 0 ) |
| 121 |
10 120
|
syl |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( 2 ^ N ) mod ( 2 ^ N ) ) = 0 ) |
| 122 |
121
|
oveq2d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A mod ( 2 ^ N ) ) - ( ( 2 ^ N ) mod ( 2 ^ N ) ) ) = ( ( A mod ( 2 ^ N ) ) - 0 ) ) |
| 123 |
116
|
recnd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( A mod ( 2 ^ N ) ) e. CC ) |
| 124 |
123
|
subid1d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A mod ( 2 ^ N ) ) - 0 ) = ( A mod ( 2 ^ N ) ) ) |
| 125 |
122 124
|
eqtrd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A mod ( 2 ^ N ) ) - ( ( 2 ^ N ) mod ( 2 ^ N ) ) ) = ( A mod ( 2 ^ N ) ) ) |
| 126 |
125
|
oveq1d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( ( A mod ( 2 ^ N ) ) - ( ( 2 ^ N ) mod ( 2 ^ N ) ) ) mod ( 2 ^ N ) ) = ( ( A mod ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) |
| 127 |
|
modsubmodmod |
|- ( ( A e. RR /\ ( 2 ^ N ) e. RR /\ ( 2 ^ N ) e. RR+ ) -> ( ( ( A mod ( 2 ^ N ) ) - ( ( 2 ^ N ) mod ( 2 ^ N ) ) ) mod ( 2 ^ N ) ) = ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) |
| 128 |
2 8 10 127
|
syl3anc |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( ( A mod ( 2 ^ N ) ) - ( ( 2 ^ N ) mod ( 2 ^ N ) ) ) mod ( 2 ^ N ) ) = ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) |
| 129 |
|
modabs2 |
|- ( ( A e. RR /\ ( 2 ^ N ) e. RR+ ) -> ( ( A mod ( 2 ^ N ) ) mod ( 2 ^ N ) ) = ( A mod ( 2 ^ N ) ) ) |
| 130 |
2 10 129
|
syl2anc |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A mod ( 2 ^ N ) ) mod ( 2 ^ N ) ) = ( A mod ( 2 ^ N ) ) ) |
| 131 |
126 128 130
|
3eqtr3d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) = ( A mod ( 2 ^ N ) ) ) |
| 132 |
131
|
oveq2d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( 2 ^ N ) + ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) = ( ( 2 ^ N ) + ( A mod ( 2 ^ N ) ) ) ) |
| 133 |
119 132
|
breqtrrd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 1 + ( ( A - 1 ) mod ( 2 ^ N ) ) ) < ( ( 2 ^ N ) + ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) ) |
| 134 |
19 20 2 133
|
ltsub2dd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( A - ( ( 2 ^ N ) + ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) ) < ( A - ( 1 + ( ( A - 1 ) mod ( 2 ^ N ) ) ) ) ) |
| 135 |
31
|
3ad2ant1 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> A e. CC ) |
| 136 |
8
|
recnd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 2 ^ N ) e. CC ) |
| 137 |
11
|
recnd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) e. CC ) |
| 138 |
135 136 137
|
subsub4d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - ( 2 ^ N ) ) - ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) = ( A - ( ( 2 ^ N ) + ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) ) ) |
| 139 |
|
1cnd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> 1 e. CC ) |
| 140 |
16
|
recnd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - 1 ) mod ( 2 ^ N ) ) e. CC ) |
| 141 |
135 139 140
|
subsub4d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - 1 ) - ( ( A - 1 ) mod ( 2 ^ N ) ) ) = ( A - ( 1 + ( ( A - 1 ) mod ( 2 ^ N ) ) ) ) ) |
| 142 |
134 138 141
|
3brtr4d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( A - ( 2 ^ N ) ) - ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) < ( ( A - 1 ) - ( ( A - 1 ) mod ( 2 ^ N ) ) ) ) |
| 143 |
12 17 10 142
|
ltdiv1dd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( ( ( A - ( 2 ^ N ) ) - ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) / ( 2 ^ N ) ) < ( ( ( A - 1 ) - ( ( A - 1 ) mod ( 2 ^ N ) ) ) / ( 2 ^ N ) ) ) |
| 144 |
7
|
recnd |
|- ( N e. NN -> ( 2 ^ N ) e. CC ) |
| 145 |
144
|
3ad2ant3 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 2 ^ N ) e. CC ) |
| 146 |
63
|
a1i |
|- ( N e. NN -> 2 =/= 0 ) |
| 147 |
75 146 5
|
expne0d |
|- ( N e. NN -> ( 2 ^ N ) =/= 0 ) |
| 148 |
147
|
3ad2ant3 |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( 2 ^ N ) =/= 0 ) |
| 149 |
|
divsub1dir |
|- ( ( A e. CC /\ ( 2 ^ N ) e. CC /\ ( 2 ^ N ) =/= 0 ) -> ( ( A / ( 2 ^ N ) ) - 1 ) = ( ( A - ( 2 ^ N ) ) / ( 2 ^ N ) ) ) |
| 150 |
149
|
fveq2d |
|- ( ( A e. CC /\ ( 2 ^ N ) e. CC /\ ( 2 ^ N ) =/= 0 ) -> ( |_ ` ( ( A / ( 2 ^ N ) ) - 1 ) ) = ( |_ ` ( ( A - ( 2 ^ N ) ) / ( 2 ^ N ) ) ) ) |
| 151 |
135 145 148 150
|
syl3anc |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( |_ ` ( ( A / ( 2 ^ N ) ) - 1 ) ) = ( |_ ` ( ( A - ( 2 ^ N ) ) / ( 2 ^ N ) ) ) ) |
| 152 |
|
fldivmod |
|- ( ( ( A - ( 2 ^ N ) ) e. RR /\ ( 2 ^ N ) e. RR+ ) -> ( |_ ` ( ( A - ( 2 ^ N ) ) / ( 2 ^ N ) ) ) = ( ( ( A - ( 2 ^ N ) ) - ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) / ( 2 ^ N ) ) ) |
| 153 |
9 10 152
|
syl2anc |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( |_ ` ( ( A - ( 2 ^ N ) ) / ( 2 ^ N ) ) ) = ( ( ( A - ( 2 ^ N ) ) - ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) / ( 2 ^ N ) ) ) |
| 154 |
151 153
|
eqtrd |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( |_ ` ( ( A / ( 2 ^ N ) ) - 1 ) ) = ( ( ( A - ( 2 ^ N ) ) - ( ( A - ( 2 ^ N ) ) mod ( 2 ^ N ) ) ) / ( 2 ^ N ) ) ) |
| 155 |
|
fldivmod |
|- ( ( ( A - 1 ) e. RR /\ ( 2 ^ N ) e. RR+ ) -> ( |_ ` ( ( A - 1 ) / ( 2 ^ N ) ) ) = ( ( ( A - 1 ) - ( ( A - 1 ) mod ( 2 ^ N ) ) ) / ( 2 ^ N ) ) ) |
| 156 |
15 10 155
|
syl2anc |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( |_ ` ( ( A - 1 ) / ( 2 ^ N ) ) ) = ( ( ( A - 1 ) - ( ( A - 1 ) mod ( 2 ^ N ) ) ) / ( 2 ^ N ) ) ) |
| 157 |
143 154 156
|
3brtr4d |
|- ( ( A e. ZZ /\ ( ( A - 1 ) / 2 ) e. NN /\ N e. NN ) -> ( |_ ` ( ( A / ( 2 ^ N ) ) - 1 ) ) < ( |_ ` ( ( A - 1 ) / ( 2 ^ N ) ) ) ) |