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Description: An upper bound on the Chebyshev function. (Contributed by Mario Carneiro, 13-Mar-2014) (Revised 22-Sep-2014.)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | chtub | |- ( ( N e. RR /\ 2 < N ) -> ( theta ` N ) < ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2re | |- 2 e. RR |
|
| 2 | 1lt2 | |- 1 < 2 |
|
| 3 | rplogcl | |- ( ( 2 e. RR /\ 1 < 2 ) -> ( log ` 2 ) e. RR+ ) |
|
| 4 | 1 2 3 | mp2an | |- ( log ` 2 ) e. RR+ |
| 5 | elrp | |- ( ( log ` 2 ) e. RR+ <-> ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) ) |
|
| 6 | 4 5 | mpbi | |- ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) |
| 7 | 6 | simpli | |- ( log ` 2 ) e. RR |
| 8 | 7 | recni | |- ( log ` 2 ) e. CC |
| 9 | 8 | mulridi | |- ( ( log ` 2 ) x. 1 ) = ( log ` 2 ) |
| 10 | cht2 | |- ( theta ` 2 ) = ( log ` 2 ) |
|
| 11 | 9 10 | eqtr4i | |- ( ( log ` 2 ) x. 1 ) = ( theta ` 2 ) |
| 12 | fveq2 | |- ( ( |_ ` N ) = 2 -> ( theta ` ( |_ ` N ) ) = ( theta ` 2 ) ) |
|
| 13 | 11 12 | eqtr4id | |- ( ( |_ ` N ) = 2 -> ( ( log ` 2 ) x. 1 ) = ( theta ` ( |_ ` N ) ) ) |
| 14 | chtfl | |- ( N e. RR -> ( theta ` ( |_ ` N ) ) = ( theta ` N ) ) |
|
| 15 | 14 | adantr | |- ( ( N e. RR /\ 2 < N ) -> ( theta ` ( |_ ` N ) ) = ( theta ` N ) ) |
| 16 | 13 15 | sylan9eqr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( ( log ` 2 ) x. 1 ) = ( theta ` N ) ) |
| 17 | 2t2e4 | |- ( 2 x. 2 ) = 4 |
|
| 18 | df-4 | |- 4 = ( 3 + 1 ) |
|
| 19 | 17 18 | eqtri | |- ( 2 x. 2 ) = ( 3 + 1 ) |
| 20 | simplr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> 2 < N ) |
|
| 21 | simpl | |- ( ( N e. RR /\ 2 < N ) -> N e. RR ) |
|
| 22 | 2pos | |- 0 < 2 |
|
| 23 | 1 22 | pm3.2i | |- ( 2 e. RR /\ 0 < 2 ) |
| 24 | 23 | a1i | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( 2 e. RR /\ 0 < 2 ) ) |
| 25 | ltmul2 | |- ( ( 2 e. RR /\ N e. RR /\ ( 2 e. RR /\ 0 < 2 ) ) -> ( 2 < N <-> ( 2 x. 2 ) < ( 2 x. N ) ) ) |
|
| 26 | 1 21 24 25 | mp3an2ani | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( 2 < N <-> ( 2 x. 2 ) < ( 2 x. N ) ) ) |
| 27 | 20 26 | mpbid | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( 2 x. 2 ) < ( 2 x. N ) ) |
| 28 | 19 27 | eqbrtrrid | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( 3 + 1 ) < ( 2 x. N ) ) |
| 29 | 3re | |- 3 e. RR |
|
| 30 | 29 | a1i | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> 3 e. RR ) |
| 31 | 1red | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> 1 e. RR ) |
|
| 32 | remulcl | |- ( ( 2 e. RR /\ N e. RR ) -> ( 2 x. N ) e. RR ) |
|
| 33 | 1 21 32 | sylancr | |- ( ( N e. RR /\ 2 < N ) -> ( 2 x. N ) e. RR ) |
| 34 | 33 | adantr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( 2 x. N ) e. RR ) |
| 35 | 30 31 34 | ltaddsub2d | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( ( 3 + 1 ) < ( 2 x. N ) <-> 1 < ( ( 2 x. N ) - 3 ) ) ) |
| 36 | 28 35 | mpbid | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> 1 < ( ( 2 x. N ) - 3 ) ) |
| 37 | resubcl | |- ( ( ( 2 x. N ) e. RR /\ 3 e. RR ) -> ( ( 2 x. N ) - 3 ) e. RR ) |
|
| 38 | 33 29 37 | sylancl | |- ( ( N e. RR /\ 2 < N ) -> ( ( 2 x. N ) - 3 ) e. RR ) |
| 39 | 38 | adantr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( ( 2 x. N ) - 3 ) e. RR ) |
| 40 | 6 | a1i | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) ) |
| 41 | ltmul2 | |- ( ( 1 e. RR /\ ( ( 2 x. N ) - 3 ) e. RR /\ ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) ) -> ( 1 < ( ( 2 x. N ) - 3 ) <-> ( ( log ` 2 ) x. 1 ) < ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) ) |
|
| 42 | 31 39 40 41 | syl3anc | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( 1 < ( ( 2 x. N ) - 3 ) <-> ( ( log ` 2 ) x. 1 ) < ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) ) |
| 43 | 36 42 | mpbid | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( ( log ` 2 ) x. 1 ) < ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) |
| 44 | 16 43 | eqbrtrrd | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) = 2 ) -> ( theta ` N ) < ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) |
| 45 | chtcl | |- ( N e. RR -> ( theta ` N ) e. RR ) |
|
| 46 | 45 | ad2antrr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( theta ` N ) e. RR ) |
| 47 | reflcl | |- ( N e. RR -> ( |_ ` N ) e. RR ) |
|
| 48 | 47 | ad2antrr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( |_ ` N ) e. RR ) |
| 49 | remulcl | |- ( ( 2 e. RR /\ ( |_ ` N ) e. RR ) -> ( 2 x. ( |_ ` N ) ) e. RR ) |
|
| 50 | 1 48 49 | sylancr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( 2 x. ( |_ ` N ) ) e. RR ) |
| 51 | resubcl | |- ( ( ( 2 x. ( |_ ` N ) ) e. RR /\ 3 e. RR ) -> ( ( 2 x. ( |_ ` N ) ) - 3 ) e. RR ) |
|
| 52 | 50 29 51 | sylancl | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( 2 x. ( |_ ` N ) ) - 3 ) e. RR ) |
| 53 | remulcl | |- ( ( ( log ` 2 ) e. RR /\ ( ( 2 x. ( |_ ` N ) ) - 3 ) e. RR ) -> ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) e. RR ) |
|
| 54 | 7 52 53 | sylancr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) e. RR ) |
| 55 | 38 | adantr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( 2 x. N ) - 3 ) e. RR ) |
| 56 | remulcl | |- ( ( ( log ` 2 ) e. RR /\ ( ( 2 x. N ) - 3 ) e. RR ) -> ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) e. RR ) |
|
| 57 | 7 55 56 | sylancr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) e. RR ) |
| 58 | 15 | adantr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( theta ` ( |_ ` N ) ) = ( theta ` N ) ) |
| 59 | simpr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) |
|
| 60 | df-3 | |- 3 = ( 2 + 1 ) |
|
| 61 | 60 | fveq2i | |- ( ZZ>= ` 3 ) = ( ZZ>= ` ( 2 + 1 ) ) |
| 62 | 59 61 | eleqtrrdi | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( |_ ` N ) e. ( ZZ>= ` 3 ) ) |
| 63 | fveq2 | |- ( k = ( |_ ` N ) -> ( theta ` k ) = ( theta ` ( |_ ` N ) ) ) |
|
| 64 | oveq2 | |- ( k = ( |_ ` N ) -> ( 2 x. k ) = ( 2 x. ( |_ ` N ) ) ) |
|
| 65 | 64 | oveq1d | |- ( k = ( |_ ` N ) -> ( ( 2 x. k ) - 3 ) = ( ( 2 x. ( |_ ` N ) ) - 3 ) ) |
| 66 | 65 | oveq2d | |- ( k = ( |_ ` N ) -> ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) = ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) ) |
| 67 | 63 66 | breq12d | |- ( k = ( |_ ` N ) -> ( ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> ( theta ` ( |_ ` N ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) ) ) |
| 68 | oveq2 | |- ( x = 3 -> ( 3 ... x ) = ( 3 ... 3 ) ) |
|
| 69 | 68 | raleqdv | |- ( x = 3 -> ( A. k e. ( 3 ... x ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> A. k e. ( 3 ... 3 ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 70 | oveq2 | |- ( x = n -> ( 3 ... x ) = ( 3 ... n ) ) |
|
| 71 | 70 | raleqdv | |- ( x = n -> ( A. k e. ( 3 ... x ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 72 | oveq2 | |- ( x = ( n + 1 ) -> ( 3 ... x ) = ( 3 ... ( n + 1 ) ) ) |
|
| 73 | 72 | raleqdv | |- ( x = ( n + 1 ) -> ( A. k e. ( 3 ... x ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> A. k e. ( 3 ... ( n + 1 ) ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 74 | oveq2 | |- ( x = ( |_ ` N ) -> ( 3 ... x ) = ( 3 ... ( |_ ` N ) ) ) |
|
| 75 | 74 | raleqdv | |- ( x = ( |_ ` N ) -> ( A. k e. ( 3 ... x ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> A. k e. ( 3 ... ( |_ ` N ) ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 76 | 6lt8 | |- 6 < 8 |
|
| 77 | 6re | |- 6 e. RR |
|
| 78 | 6pos | |- 0 < 6 |
|
| 79 | 77 78 | elrpii | |- 6 e. RR+ |
| 80 | 8re | |- 8 e. RR |
|
| 81 | 8pos | |- 0 < 8 |
|
| 82 | 80 81 | elrpii | |- 8 e. RR+ |
| 83 | logltb | |- ( ( 6 e. RR+ /\ 8 e. RR+ ) -> ( 6 < 8 <-> ( log ` 6 ) < ( log ` 8 ) ) ) |
|
| 84 | 79 82 83 | mp2an | |- ( 6 < 8 <-> ( log ` 6 ) < ( log ` 8 ) ) |
| 85 | 76 84 | mpbi | |- ( log ` 6 ) < ( log ` 8 ) |
| 86 | 85 | a1i | |- ( k e. ( 3 ... 3 ) -> ( log ` 6 ) < ( log ` 8 ) ) |
| 87 | elfz1eq | |- ( k e. ( 3 ... 3 ) -> k = 3 ) |
|
| 88 | 87 | fveq2d | |- ( k e. ( 3 ... 3 ) -> ( theta ` k ) = ( theta ` 3 ) ) |
| 89 | cht3 | |- ( theta ` 3 ) = ( log ` 6 ) |
|
| 90 | 88 89 | eqtrdi | |- ( k e. ( 3 ... 3 ) -> ( theta ` k ) = ( log ` 6 ) ) |
| 91 | 87 | oveq2d | |- ( k e. ( 3 ... 3 ) -> ( 2 x. k ) = ( 2 x. 3 ) ) |
| 92 | 91 | oveq1d | |- ( k e. ( 3 ... 3 ) -> ( ( 2 x. k ) - 3 ) = ( ( 2 x. 3 ) - 3 ) ) |
| 93 | 3cn | |- 3 e. CC |
|
| 94 | 93 | 2timesi | |- ( 2 x. 3 ) = ( 3 + 3 ) |
| 95 | 93 93 94 | mvrraddi | |- ( ( 2 x. 3 ) - 3 ) = 3 |
| 96 | 92 95 | eqtrdi | |- ( k e. ( 3 ... 3 ) -> ( ( 2 x. k ) - 3 ) = 3 ) |
| 97 | 96 | oveq2d | |- ( k e. ( 3 ... 3 ) -> ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) = ( ( log ` 2 ) x. 3 ) ) |
| 98 | 2rp | |- 2 e. RR+ |
|
| 99 | relogcl | |- ( 2 e. RR+ -> ( log ` 2 ) e. RR ) |
|
| 100 | 98 99 | ax-mp | |- ( log ` 2 ) e. RR |
| 101 | 100 | recni | |- ( log ` 2 ) e. CC |
| 102 | 101 93 | mulcomi | |- ( ( log ` 2 ) x. 3 ) = ( 3 x. ( log ` 2 ) ) |
| 103 | 3z | |- 3 e. ZZ |
|
| 104 | relogexp | |- ( ( 2 e. RR+ /\ 3 e. ZZ ) -> ( log ` ( 2 ^ 3 ) ) = ( 3 x. ( log ` 2 ) ) ) |
|
| 105 | 98 103 104 | mp2an | |- ( log ` ( 2 ^ 3 ) ) = ( 3 x. ( log ` 2 ) ) |
| 106 | 102 105 | eqtr4i | |- ( ( log ` 2 ) x. 3 ) = ( log ` ( 2 ^ 3 ) ) |
| 107 | cu2 | |- ( 2 ^ 3 ) = 8 |
|
| 108 | 107 | fveq2i | |- ( log ` ( 2 ^ 3 ) ) = ( log ` 8 ) |
| 109 | 106 108 | eqtri | |- ( ( log ` 2 ) x. 3 ) = ( log ` 8 ) |
| 110 | 97 109 | eqtrdi | |- ( k e. ( 3 ... 3 ) -> ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) = ( log ` 8 ) ) |
| 111 | 86 90 110 | 3brtr4d | |- ( k e. ( 3 ... 3 ) -> ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) |
| 112 | 111 | rgen | |- A. k e. ( 3 ... 3 ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) |
| 113 | df-2 | |- 2 = ( 1 + 1 ) |
|
| 114 | 2div2e1 | |- ( 2 / 2 ) = 1 |
|
| 115 | eluzle | |- ( n e. ( ZZ>= ` 3 ) -> 3 <_ n ) |
|
| 116 | 60 115 | eqbrtrrid | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 + 1 ) <_ n ) |
| 117 | 2z | |- 2 e. ZZ |
|
| 118 | eluzelz | |- ( n e. ( ZZ>= ` 3 ) -> n e. ZZ ) |
|
| 119 | zltp1le | |- ( ( 2 e. ZZ /\ n e. ZZ ) -> ( 2 < n <-> ( 2 + 1 ) <_ n ) ) |
|
| 120 | 117 118 119 | sylancr | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 < n <-> ( 2 + 1 ) <_ n ) ) |
| 121 | 116 120 | mpbird | |- ( n e. ( ZZ>= ` 3 ) -> 2 < n ) |
| 122 | eluzelre | |- ( n e. ( ZZ>= ` 3 ) -> n e. RR ) |
|
| 123 | ltdiv1 | |- ( ( 2 e. RR /\ n e. RR /\ ( 2 e. RR /\ 0 < 2 ) ) -> ( 2 < n <-> ( 2 / 2 ) < ( n / 2 ) ) ) |
|
| 124 | 1 23 123 | mp3an13 | |- ( n e. RR -> ( 2 < n <-> ( 2 / 2 ) < ( n / 2 ) ) ) |
| 125 | 122 124 | syl | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 < n <-> ( 2 / 2 ) < ( n / 2 ) ) ) |
| 126 | 121 125 | mpbid | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 / 2 ) < ( n / 2 ) ) |
| 127 | 114 126 | eqbrtrrid | |- ( n e. ( ZZ>= ` 3 ) -> 1 < ( n / 2 ) ) |
| 128 | 122 | rehalfcld | |- ( n e. ( ZZ>= ` 3 ) -> ( n / 2 ) e. RR ) |
| 129 | 1re | |- 1 e. RR |
|
| 130 | ltadd1 | |- ( ( 1 e. RR /\ ( n / 2 ) e. RR /\ 1 e. RR ) -> ( 1 < ( n / 2 ) <-> ( 1 + 1 ) < ( ( n / 2 ) + 1 ) ) ) |
|
| 131 | 129 129 130 | mp3an13 | |- ( ( n / 2 ) e. RR -> ( 1 < ( n / 2 ) <-> ( 1 + 1 ) < ( ( n / 2 ) + 1 ) ) ) |
| 132 | 128 131 | syl | |- ( n e. ( ZZ>= ` 3 ) -> ( 1 < ( n / 2 ) <-> ( 1 + 1 ) < ( ( n / 2 ) + 1 ) ) ) |
| 133 | 127 132 | mpbid | |- ( n e. ( ZZ>= ` 3 ) -> ( 1 + 1 ) < ( ( n / 2 ) + 1 ) ) |
| 134 | 113 133 | eqbrtrid | |- ( n e. ( ZZ>= ` 3 ) -> 2 < ( ( n / 2 ) + 1 ) ) |
| 135 | 134 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> 2 < ( ( n / 2 ) + 1 ) ) |
| 136 | peano2z | |- ( ( n / 2 ) e. ZZ -> ( ( n / 2 ) + 1 ) e. ZZ ) |
|
| 137 | 136 | adantl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n / 2 ) + 1 ) e. ZZ ) |
| 138 | zltp1le | |- ( ( 2 e. ZZ /\ ( ( n / 2 ) + 1 ) e. ZZ ) -> ( 2 < ( ( n / 2 ) + 1 ) <-> ( 2 + 1 ) <_ ( ( n / 2 ) + 1 ) ) ) |
|
| 139 | 117 137 138 | sylancr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 < ( ( n / 2 ) + 1 ) <-> ( 2 + 1 ) <_ ( ( n / 2 ) + 1 ) ) ) |
| 140 | 135 139 | mpbid | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 + 1 ) <_ ( ( n / 2 ) + 1 ) ) |
| 141 | 60 140 | eqbrtrid | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> 3 <_ ( ( n / 2 ) + 1 ) ) |
| 142 | 1red | |- ( n e. ( ZZ>= ` 3 ) -> 1 e. RR ) |
|
| 143 | ltle | |- ( ( 1 e. RR /\ ( n / 2 ) e. RR ) -> ( 1 < ( n / 2 ) -> 1 <_ ( n / 2 ) ) ) |
|
| 144 | 129 128 143 | sylancr | |- ( n e. ( ZZ>= ` 3 ) -> ( 1 < ( n / 2 ) -> 1 <_ ( n / 2 ) ) ) |
| 145 | 127 144 | mpd | |- ( n e. ( ZZ>= ` 3 ) -> 1 <_ ( n / 2 ) ) |
| 146 | 142 128 128 145 | leadd2dd | |- ( n e. ( ZZ>= ` 3 ) -> ( ( n / 2 ) + 1 ) <_ ( ( n / 2 ) + ( n / 2 ) ) ) |
| 147 | 122 | recnd | |- ( n e. ( ZZ>= ` 3 ) -> n e. CC ) |
| 148 | 147 | 2halvesd | |- ( n e. ( ZZ>= ` 3 ) -> ( ( n / 2 ) + ( n / 2 ) ) = n ) |
| 149 | 146 148 | breqtrd | |- ( n e. ( ZZ>= ` 3 ) -> ( ( n / 2 ) + 1 ) <_ n ) |
| 150 | 149 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n / 2 ) + 1 ) <_ n ) |
| 151 | elfz | |- ( ( ( ( n / 2 ) + 1 ) e. ZZ /\ 3 e. ZZ /\ n e. ZZ ) -> ( ( ( n / 2 ) + 1 ) e. ( 3 ... n ) <-> ( 3 <_ ( ( n / 2 ) + 1 ) /\ ( ( n / 2 ) + 1 ) <_ n ) ) ) |
|
| 152 | 103 151 | mp3an2 | |- ( ( ( ( n / 2 ) + 1 ) e. ZZ /\ n e. ZZ ) -> ( ( ( n / 2 ) + 1 ) e. ( 3 ... n ) <-> ( 3 <_ ( ( n / 2 ) + 1 ) /\ ( ( n / 2 ) + 1 ) <_ n ) ) ) |
| 153 | 136 118 152 | syl2anr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( ( n / 2 ) + 1 ) e. ( 3 ... n ) <-> ( 3 <_ ( ( n / 2 ) + 1 ) /\ ( ( n / 2 ) + 1 ) <_ n ) ) ) |
| 154 | 141 150 153 | mpbir2and | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n / 2 ) + 1 ) e. ( 3 ... n ) ) |
| 155 | fveq2 | |- ( k = ( ( n / 2 ) + 1 ) -> ( theta ` k ) = ( theta ` ( ( n / 2 ) + 1 ) ) ) |
|
| 156 | oveq2 | |- ( k = ( ( n / 2 ) + 1 ) -> ( 2 x. k ) = ( 2 x. ( ( n / 2 ) + 1 ) ) ) |
|
| 157 | 156 | oveq1d | |- ( k = ( ( n / 2 ) + 1 ) -> ( ( 2 x. k ) - 3 ) = ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) |
| 158 | 157 | oveq2d | |- ( k = ( ( n / 2 ) + 1 ) -> ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) = ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) ) |
| 159 | 155 158 | breq12d | |- ( k = ( ( n / 2 ) + 1 ) -> ( ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) ) ) |
| 160 | 159 | rspcv | |- ( ( ( n / 2 ) + 1 ) e. ( 3 ... n ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) ) ) |
| 161 | 154 160 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) ) ) |
| 162 | 128 | recnd | |- ( n e. ( ZZ>= ` 3 ) -> ( n / 2 ) e. CC ) |
| 163 | 162 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( n / 2 ) e. CC ) |
| 164 | 2cn | |- 2 e. CC |
|
| 165 | ax-1cn | |- 1 e. CC |
|
| 166 | adddi | |- ( ( 2 e. CC /\ ( n / 2 ) e. CC /\ 1 e. CC ) -> ( 2 x. ( ( n / 2 ) + 1 ) ) = ( ( 2 x. ( n / 2 ) ) + ( 2 x. 1 ) ) ) |
|
| 167 | 164 165 166 | mp3an13 | |- ( ( n / 2 ) e. CC -> ( 2 x. ( ( n / 2 ) + 1 ) ) = ( ( 2 x. ( n / 2 ) ) + ( 2 x. 1 ) ) ) |
| 168 | 163 167 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. ( ( n / 2 ) + 1 ) ) = ( ( 2 x. ( n / 2 ) ) + ( 2 x. 1 ) ) ) |
| 169 | 147 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> n e. CC ) |
| 170 | 2ne0 | |- 2 =/= 0 |
|
| 171 | divcan2 | |- ( ( n e. CC /\ 2 e. CC /\ 2 =/= 0 ) -> ( 2 x. ( n / 2 ) ) = n ) |
|
| 172 | 164 170 171 | mp3an23 | |- ( n e. CC -> ( 2 x. ( n / 2 ) ) = n ) |
| 173 | 169 172 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. ( n / 2 ) ) = n ) |
| 174 | 164 | mulridi | |- ( 2 x. 1 ) = 2 |
| 175 | 174 | a1i | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. 1 ) = 2 ) |
| 176 | 173 175 | oveq12d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. ( n / 2 ) ) + ( 2 x. 1 ) ) = ( n + 2 ) ) |
| 177 | 168 176 | eqtrd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. ( ( n / 2 ) + 1 ) ) = ( n + 2 ) ) |
| 178 | 177 | oveq1d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) = ( ( n + 2 ) - 3 ) ) |
| 179 | subsub3 | |- ( ( n e. CC /\ 3 e. CC /\ 2 e. CC ) -> ( n - ( 3 - 2 ) ) = ( ( n + 2 ) - 3 ) ) |
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| 180 | 93 164 179 | mp3an23 | |- ( n e. CC -> ( n - ( 3 - 2 ) ) = ( ( n + 2 ) - 3 ) ) |
| 181 | 169 180 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( n - ( 3 - 2 ) ) = ( ( n + 2 ) - 3 ) ) |
| 182 | 2p1e3 | |- ( 2 + 1 ) = 3 |
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| 183 | 93 164 165 182 | subaddrii | |- ( 3 - 2 ) = 1 |
| 184 | 183 | oveq2i | |- ( n - ( 3 - 2 ) ) = ( n - 1 ) |
| 185 | 181 184 | eqtr3di | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n + 2 ) - 3 ) = ( n - 1 ) ) |
| 186 | 178 185 | eqtrd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) = ( n - 1 ) ) |
| 187 | 186 | oveq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) = ( ( log ` 2 ) x. ( n - 1 ) ) ) |
| 188 | 187 | breq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) <-> ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( n - 1 ) ) ) ) |
| 189 | 137 | zred | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n / 2 ) + 1 ) e. RR ) |
| 190 | chtcl | |- ( ( ( n / 2 ) + 1 ) e. RR -> ( theta ` ( ( n / 2 ) + 1 ) ) e. RR ) |
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| 191 | 189 190 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( theta ` ( ( n / 2 ) + 1 ) ) e. RR ) |
| 192 | 122 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> n e. RR ) |
| 193 | peano2rem | |- ( n e. RR -> ( n - 1 ) e. RR ) |
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| 194 | 192 193 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( n - 1 ) e. RR ) |
| 195 | remulcl | |- ( ( ( log ` 2 ) e. RR /\ ( n - 1 ) e. RR ) -> ( ( log ` 2 ) x. ( n - 1 ) ) e. RR ) |
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| 196 | 100 194 195 | sylancr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 2 ) x. ( n - 1 ) ) e. RR ) |
| 197 | remulcl | |- ( ( ( log ` 2 ) e. RR /\ n e. RR ) -> ( ( log ` 2 ) x. n ) e. RR ) |
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| 198 | 100 192 197 | sylancr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 2 ) x. n ) e. RR ) |
| 199 | 191 196 198 | ltadd1d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( n - 1 ) ) <-> ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) < ( ( ( log ` 2 ) x. ( n - 1 ) ) + ( ( log ` 2 ) x. n ) ) ) ) |
| 200 | 101 | a1i | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( log ` 2 ) e. CC ) |
| 201 | 194 | recnd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( n - 1 ) e. CC ) |
| 202 | 200 201 169 | adddid | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 2 ) x. ( ( n - 1 ) + n ) ) = ( ( ( log ` 2 ) x. ( n - 1 ) ) + ( ( log ` 2 ) x. n ) ) ) |
| 203 | adddi | |- ( ( 2 e. CC /\ n e. CC /\ 1 e. CC ) -> ( 2 x. ( n + 1 ) ) = ( ( 2 x. n ) + ( 2 x. 1 ) ) ) |
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| 204 | 164 165 203 | mp3an13 | |- ( n e. CC -> ( 2 x. ( n + 1 ) ) = ( ( 2 x. n ) + ( 2 x. 1 ) ) ) |
| 205 | 169 204 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. ( n + 1 ) ) = ( ( 2 x. n ) + ( 2 x. 1 ) ) ) |
| 206 | 174 | oveq2i | |- ( ( 2 x. n ) + ( 2 x. 1 ) ) = ( ( 2 x. n ) + 2 ) |
| 207 | 205 206 | eqtrdi | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. ( n + 1 ) ) = ( ( 2 x. n ) + 2 ) ) |
| 208 | 207 | oveq1d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. ( n + 1 ) ) - 3 ) = ( ( ( 2 x. n ) + 2 ) - 3 ) ) |
| 209 | zmulcl | |- ( ( 2 e. ZZ /\ n e. ZZ ) -> ( 2 x. n ) e. ZZ ) |
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| 210 | 117 118 209 | sylancr | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 x. n ) e. ZZ ) |
| 211 | 210 | zcnd | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 x. n ) e. CC ) |
| 212 | 211 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. n ) e. CC ) |
| 213 | subsub3 | |- ( ( ( 2 x. n ) e. CC /\ 3 e. CC /\ 2 e. CC ) -> ( ( 2 x. n ) - ( 3 - 2 ) ) = ( ( ( 2 x. n ) + 2 ) - 3 ) ) |
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| 214 | 93 164 213 | mp3an23 | |- ( ( 2 x. n ) e. CC -> ( ( 2 x. n ) - ( 3 - 2 ) ) = ( ( ( 2 x. n ) + 2 ) - 3 ) ) |
| 215 | 212 214 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. n ) - ( 3 - 2 ) ) = ( ( ( 2 x. n ) + 2 ) - 3 ) ) |
| 216 | 183 | oveq2i | |- ( ( 2 x. n ) - ( 3 - 2 ) ) = ( ( 2 x. n ) - 1 ) |
| 217 | 169 | 2timesd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( 2 x. n ) = ( n + n ) ) |
| 218 | 217 | oveq1d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. n ) - 1 ) = ( ( n + n ) - 1 ) ) |
| 219 | 165 | a1i | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> 1 e. CC ) |
| 220 | 169 169 219 | addsubd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n + n ) - 1 ) = ( ( n - 1 ) + n ) ) |
| 221 | 218 220 | eqtrd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. n ) - 1 ) = ( ( n - 1 ) + n ) ) |
| 222 | 216 221 | eqtrid | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. n ) - ( 3 - 2 ) ) = ( ( n - 1 ) + n ) ) |
| 223 | 208 215 222 | 3eqtr2rd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n - 1 ) + n ) = ( ( 2 x. ( n + 1 ) ) - 3 ) ) |
| 224 | 223 | oveq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 2 ) x. ( ( n - 1 ) + n ) ) = ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) |
| 225 | 202 224 | eqtr3d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( ( log ` 2 ) x. ( n - 1 ) ) + ( ( log ` 2 ) x. n ) ) = ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) |
| 226 | 225 | breq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) < ( ( ( log ` 2 ) x. ( n - 1 ) ) + ( ( log ` 2 ) x. n ) ) <-> ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 227 | 188 199 226 | 3bitrd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) <-> ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 228 | 3nn | |- 3 e. NN |
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| 229 | elfzuz | |- ( ( ( n / 2 ) + 1 ) e. ( 3 ... n ) -> ( ( n / 2 ) + 1 ) e. ( ZZ>= ` 3 ) ) |
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| 230 | 154 229 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n / 2 ) + 1 ) e. ( ZZ>= ` 3 ) ) |
| 231 | eluznn | |- ( ( 3 e. NN /\ ( ( n / 2 ) + 1 ) e. ( ZZ>= ` 3 ) ) -> ( ( n / 2 ) + 1 ) e. NN ) |
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| 232 | 228 230 231 | sylancr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n / 2 ) + 1 ) e. NN ) |
| 233 | chtublem | |- ( ( ( n / 2 ) + 1 ) e. NN -> ( theta ` ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 1 ) ) <_ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 4 ) x. ( ( ( n / 2 ) + 1 ) - 1 ) ) ) ) |
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| 234 | 232 233 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( theta ` ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 1 ) ) <_ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 4 ) x. ( ( ( n / 2 ) + 1 ) - 1 ) ) ) ) |
| 235 | 177 | oveq1d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 1 ) = ( ( n + 2 ) - 1 ) ) |
| 236 | addsubass | |- ( ( n e. CC /\ 2 e. CC /\ 1 e. CC ) -> ( ( n + 2 ) - 1 ) = ( n + ( 2 - 1 ) ) ) |
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| 237 | 164 165 236 | mp3an23 | |- ( n e. CC -> ( ( n + 2 ) - 1 ) = ( n + ( 2 - 1 ) ) ) |
| 238 | 169 237 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n + 2 ) - 1 ) = ( n + ( 2 - 1 ) ) ) |
| 239 | 2m1e1 | |- ( 2 - 1 ) = 1 |
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| 240 | 239 | oveq2i | |- ( n + ( 2 - 1 ) ) = ( n + 1 ) |
| 241 | 238 240 | eqtrdi | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( n + 2 ) - 1 ) = ( n + 1 ) ) |
| 242 | 235 241 | eqtrd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 1 ) = ( n + 1 ) ) |
| 243 | 242 | fveq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( theta ` ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 1 ) ) = ( theta ` ( n + 1 ) ) ) |
| 244 | pncan | |- ( ( ( n / 2 ) e. CC /\ 1 e. CC ) -> ( ( ( n / 2 ) + 1 ) - 1 ) = ( n / 2 ) ) |
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| 245 | 163 165 244 | sylancl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( ( n / 2 ) + 1 ) - 1 ) = ( n / 2 ) ) |
| 246 | 245 | oveq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 4 ) x. ( ( ( n / 2 ) + 1 ) - 1 ) ) = ( ( log ` 4 ) x. ( n / 2 ) ) ) |
| 247 | relogexp | |- ( ( 2 e. RR+ /\ 2 e. ZZ ) -> ( log ` ( 2 ^ 2 ) ) = ( 2 x. ( log ` 2 ) ) ) |
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| 248 | 98 117 247 | mp2an | |- ( log ` ( 2 ^ 2 ) ) = ( 2 x. ( log ` 2 ) ) |
| 249 | sq2 | |- ( 2 ^ 2 ) = 4 |
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| 250 | 249 | fveq2i | |- ( log ` ( 2 ^ 2 ) ) = ( log ` 4 ) |
| 251 | 164 101 | mulcomi | |- ( 2 x. ( log ` 2 ) ) = ( ( log ` 2 ) x. 2 ) |
| 252 | 248 250 251 | 3eqtr3i | |- ( log ` 4 ) = ( ( log ` 2 ) x. 2 ) |
| 253 | 252 | oveq1i | |- ( ( log ` 4 ) x. ( n / 2 ) ) = ( ( ( log ` 2 ) x. 2 ) x. ( n / 2 ) ) |
| 254 | 164 | a1i | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> 2 e. CC ) |
| 255 | 200 254 163 | mulassd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( ( log ` 2 ) x. 2 ) x. ( n / 2 ) ) = ( ( log ` 2 ) x. ( 2 x. ( n / 2 ) ) ) ) |
| 256 | 253 255 | eqtrid | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 4 ) x. ( n / 2 ) ) = ( ( log ` 2 ) x. ( 2 x. ( n / 2 ) ) ) ) |
| 257 | 173 | oveq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 2 ) x. ( 2 x. ( n / 2 ) ) ) = ( ( log ` 2 ) x. n ) ) |
| 258 | 246 256 257 | 3eqtrd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 4 ) x. ( ( ( n / 2 ) + 1 ) - 1 ) ) = ( ( log ` 2 ) x. n ) ) |
| 259 | 258 | oveq2d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 4 ) x. ( ( ( n / 2 ) + 1 ) - 1 ) ) ) = ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) ) |
| 260 | 234 243 259 | 3brtr3d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( theta ` ( n + 1 ) ) <_ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) ) |
| 261 | peano2uz | |- ( n e. ( ZZ>= ` 3 ) -> ( n + 1 ) e. ( ZZ>= ` 3 ) ) |
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| 262 | eluzelz | |- ( ( n + 1 ) e. ( ZZ>= ` 3 ) -> ( n + 1 ) e. ZZ ) |
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| 263 | 261 262 | syl | |- ( n e. ( ZZ>= ` 3 ) -> ( n + 1 ) e. ZZ ) |
| 264 | 263 | zred | |- ( n e. ( ZZ>= ` 3 ) -> ( n + 1 ) e. RR ) |
| 265 | 264 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( n + 1 ) e. RR ) |
| 266 | chtcl | |- ( ( n + 1 ) e. RR -> ( theta ` ( n + 1 ) ) e. RR ) |
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| 267 | 265 266 | syl | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( theta ` ( n + 1 ) ) e. RR ) |
| 268 | 191 198 | readdcld | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) e. RR ) |
| 269 | zmulcl | |- ( ( 2 e. ZZ /\ ( n + 1 ) e. ZZ ) -> ( 2 x. ( n + 1 ) ) e. ZZ ) |
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| 270 | 117 263 269 | sylancr | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 x. ( n + 1 ) ) e. ZZ ) |
| 271 | 270 | zred | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 x. ( n + 1 ) ) e. RR ) |
| 272 | resubcl | |- ( ( ( 2 x. ( n + 1 ) ) e. RR /\ 3 e. RR ) -> ( ( 2 x. ( n + 1 ) ) - 3 ) e. RR ) |
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| 273 | 271 29 272 | sylancl | |- ( n e. ( ZZ>= ` 3 ) -> ( ( 2 x. ( n + 1 ) ) - 3 ) e. RR ) |
| 274 | 273 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( 2 x. ( n + 1 ) ) - 3 ) e. RR ) |
| 275 | remulcl | |- ( ( ( log ` 2 ) e. RR /\ ( ( 2 x. ( n + 1 ) ) - 3 ) e. RR ) -> ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) e. RR ) |
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| 276 | 100 274 275 | sylancr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) e. RR ) |
| 277 | lelttr | |- ( ( ( theta ` ( n + 1 ) ) e. RR /\ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) e. RR /\ ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) e. RR ) -> ( ( ( theta ` ( n + 1 ) ) <_ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) /\ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
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| 278 | 267 268 276 277 | syl3anc | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( ( theta ` ( n + 1 ) ) <_ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) /\ ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 279 | 260 278 | mpand | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( ( theta ` ( ( n / 2 ) + 1 ) ) + ( ( log ` 2 ) x. n ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 280 | 227 279 | sylbid | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( ( theta ` ( ( n / 2 ) + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( ( n / 2 ) + 1 ) ) - 3 ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 281 | 161 280 | syld | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n / 2 ) e. ZZ ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 282 | eluzfz2 | |- ( n e. ( ZZ>= ` 3 ) -> n e. ( 3 ... n ) ) |
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| 283 | fveq2 | |- ( k = n -> ( theta ` k ) = ( theta ` n ) ) |
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| 284 | oveq2 | |- ( k = n -> ( 2 x. k ) = ( 2 x. n ) ) |
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| 285 | 284 | oveq1d | |- ( k = n -> ( ( 2 x. k ) - 3 ) = ( ( 2 x. n ) - 3 ) ) |
| 286 | 285 | oveq2d | |- ( k = n -> ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) = ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) ) |
| 287 | 283 286 | breq12d | |- ( k = n -> ( ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) ) ) |
| 288 | 287 | rspcv | |- ( n e. ( 3 ... n ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) ) ) |
| 289 | 282 288 | syl | |- ( n e. ( ZZ>= ` 3 ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) ) ) |
| 290 | 289 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( ( n + 1 ) / 2 ) e. ZZ ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) ) ) |
| 291 | 210 | zred | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 x. n ) e. RR ) |
| 292 | 29 | a1i | |- ( n e. ( ZZ>= ` 3 ) -> 3 e. RR ) |
| 293 | 122 | ltp1d | |- ( n e. ( ZZ>= ` 3 ) -> n < ( n + 1 ) ) |
| 294 | 23 | a1i | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 e. RR /\ 0 < 2 ) ) |
| 295 | ltmul2 | |- ( ( n e. RR /\ ( n + 1 ) e. RR /\ ( 2 e. RR /\ 0 < 2 ) ) -> ( n < ( n + 1 ) <-> ( 2 x. n ) < ( 2 x. ( n + 1 ) ) ) ) |
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| 296 | 122 264 294 295 | syl3anc | |- ( n e. ( ZZ>= ` 3 ) -> ( n < ( n + 1 ) <-> ( 2 x. n ) < ( 2 x. ( n + 1 ) ) ) ) |
| 297 | 293 296 | mpbid | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 x. n ) < ( 2 x. ( n + 1 ) ) ) |
| 298 | 291 271 292 297 | ltsub1dd | |- ( n e. ( ZZ>= ` 3 ) -> ( ( 2 x. n ) - 3 ) < ( ( 2 x. ( n + 1 ) ) - 3 ) ) |
| 299 | resubcl | |- ( ( ( 2 x. n ) e. RR /\ 3 e. RR ) -> ( ( 2 x. n ) - 3 ) e. RR ) |
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| 300 | 291 29 299 | sylancl | |- ( n e. ( ZZ>= ` 3 ) -> ( ( 2 x. n ) - 3 ) e. RR ) |
| 301 | 6 | a1i | |- ( n e. ( ZZ>= ` 3 ) -> ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) ) |
| 302 | ltmul2 | |- ( ( ( ( 2 x. n ) - 3 ) e. RR /\ ( ( 2 x. ( n + 1 ) ) - 3 ) e. RR /\ ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) ) -> ( ( ( 2 x. n ) - 3 ) < ( ( 2 x. ( n + 1 ) ) - 3 ) <-> ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
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| 303 | 300 273 301 302 | syl3anc | |- ( n e. ( ZZ>= ` 3 ) -> ( ( ( 2 x. n ) - 3 ) < ( ( 2 x. ( n + 1 ) ) - 3 ) <-> ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 304 | 298 303 | mpbid | |- ( n e. ( ZZ>= ` 3 ) -> ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) |
| 305 | chtcl | |- ( n e. RR -> ( theta ` n ) e. RR ) |
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| 306 | 122 305 | syl | |- ( n e. ( ZZ>= ` 3 ) -> ( theta ` n ) e. RR ) |
| 307 | remulcl | |- ( ( ( log ` 2 ) e. RR /\ ( ( 2 x. n ) - 3 ) e. RR ) -> ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) e. RR ) |
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| 308 | 100 300 307 | sylancr | |- ( n e. ( ZZ>= ` 3 ) -> ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) e. RR ) |
| 309 | 100 273 275 | sylancr | |- ( n e. ( ZZ>= ` 3 ) -> ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) e. RR ) |
| 310 | lttr | |- ( ( ( theta ` n ) e. RR /\ ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) e. RR /\ ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) e. RR ) -> ( ( ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) /\ ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) -> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
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| 311 | 306 308 309 310 | syl3anc | |- ( n e. ( ZZ>= ` 3 ) -> ( ( ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) /\ ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) -> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 312 | 304 311 | mpan2d | |- ( n e. ( ZZ>= ` 3 ) -> ( ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) -> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 313 | 312 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( ( n + 1 ) / 2 ) e. ZZ ) -> ( ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) -> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 314 | evend2 | |- ( ( n + 1 ) e. ZZ -> ( 2 || ( n + 1 ) <-> ( ( n + 1 ) / 2 ) e. ZZ ) ) |
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| 315 | 263 314 | syl | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 || ( n + 1 ) <-> ( ( n + 1 ) / 2 ) e. ZZ ) ) |
| 316 | 2lt3 | |- 2 < 3 |
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| 317 | 1 29 | ltnlei | |- ( 2 < 3 <-> -. 3 <_ 2 ) |
| 318 | 316 317 | mpbi | |- -. 3 <_ 2 |
| 319 | breq2 | |- ( 2 = ( n + 1 ) -> ( 3 <_ 2 <-> 3 <_ ( n + 1 ) ) ) |
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| 320 | 318 319 | mtbii | |- ( 2 = ( n + 1 ) -> -. 3 <_ ( n + 1 ) ) |
| 321 | eluzle | |- ( ( n + 1 ) e. ( ZZ>= ` 3 ) -> 3 <_ ( n + 1 ) ) |
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| 322 | 261 321 | syl | |- ( n e. ( ZZ>= ` 3 ) -> 3 <_ ( n + 1 ) ) |
| 323 | 320 322 | nsyl3 | |- ( n e. ( ZZ>= ` 3 ) -> -. 2 = ( n + 1 ) ) |
| 324 | 323 | adantr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n + 1 ) e. Prime ) -> -. 2 = ( n + 1 ) ) |
| 325 | uzid | |- ( 2 e. ZZ -> 2 e. ( ZZ>= ` 2 ) ) |
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| 326 | 117 325 | ax-mp | |- 2 e. ( ZZ>= ` 2 ) |
| 327 | simpr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n + 1 ) e. Prime ) -> ( n + 1 ) e. Prime ) |
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| 328 | dvdsprm | |- ( ( 2 e. ( ZZ>= ` 2 ) /\ ( n + 1 ) e. Prime ) -> ( 2 || ( n + 1 ) <-> 2 = ( n + 1 ) ) ) |
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| 329 | 326 327 328 | sylancr | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n + 1 ) e. Prime ) -> ( 2 || ( n + 1 ) <-> 2 = ( n + 1 ) ) ) |
| 330 | 324 329 | mtbird | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( n + 1 ) e. Prime ) -> -. 2 || ( n + 1 ) ) |
| 331 | 330 | ex | |- ( n e. ( ZZ>= ` 3 ) -> ( ( n + 1 ) e. Prime -> -. 2 || ( n + 1 ) ) ) |
| 332 | 331 | con2d | |- ( n e. ( ZZ>= ` 3 ) -> ( 2 || ( n + 1 ) -> -. ( n + 1 ) e. Prime ) ) |
| 333 | 315 332 | sylbird | |- ( n e. ( ZZ>= ` 3 ) -> ( ( ( n + 1 ) / 2 ) e. ZZ -> -. ( n + 1 ) e. Prime ) ) |
| 334 | 333 | imp | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( ( n + 1 ) / 2 ) e. ZZ ) -> -. ( n + 1 ) e. Prime ) |
| 335 | chtnprm | |- ( ( n e. ZZ /\ -. ( n + 1 ) e. Prime ) -> ( theta ` ( n + 1 ) ) = ( theta ` n ) ) |
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| 336 | 118 334 335 | syl2an2r | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( ( n + 1 ) / 2 ) e. ZZ ) -> ( theta ` ( n + 1 ) ) = ( theta ` n ) ) |
| 337 | 336 | breq1d | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( ( n + 1 ) / 2 ) e. ZZ ) -> ( ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) <-> ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 338 | 313 337 | sylibrd | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( ( n + 1 ) / 2 ) e. ZZ ) -> ( ( theta ` n ) < ( ( log ` 2 ) x. ( ( 2 x. n ) - 3 ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 339 | 290 338 | syld | |- ( ( n e. ( ZZ>= ` 3 ) /\ ( ( n + 1 ) / 2 ) e. ZZ ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 340 | zeo | |- ( n e. ZZ -> ( ( n / 2 ) e. ZZ \/ ( ( n + 1 ) / 2 ) e. ZZ ) ) |
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| 341 | 118 340 | syl | |- ( n e. ( ZZ>= ` 3 ) -> ( ( n / 2 ) e. ZZ \/ ( ( n + 1 ) / 2 ) e. ZZ ) ) |
| 342 | 281 339 341 | mpjaodan | |- ( n e. ( ZZ>= ` 3 ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 343 | ovex | |- ( n + 1 ) e. _V |
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| 344 | fveq2 | |- ( k = ( n + 1 ) -> ( theta ` k ) = ( theta ` ( n + 1 ) ) ) |
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| 345 | oveq2 | |- ( k = ( n + 1 ) -> ( 2 x. k ) = ( 2 x. ( n + 1 ) ) ) |
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| 346 | 345 | oveq1d | |- ( k = ( n + 1 ) -> ( ( 2 x. k ) - 3 ) = ( ( 2 x. ( n + 1 ) ) - 3 ) ) |
| 347 | 346 | oveq2d | |- ( k = ( n + 1 ) -> ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) = ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) |
| 348 | 344 347 | breq12d | |- ( k = ( n + 1 ) -> ( ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) ) |
| 349 | 343 348 | ralsn | |- ( A. k e. { ( n + 1 ) } ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> ( theta ` ( n + 1 ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( n + 1 ) ) - 3 ) ) ) |
| 350 | 342 349 | imbitrrdi | |- ( n e. ( ZZ>= ` 3 ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> A. k e. { ( n + 1 ) } ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 351 | 350 | ancld | |- ( n e. ( ZZ>= ` 3 ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) /\ A. k e. { ( n + 1 ) } ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) ) |
| 352 | ralun | |- ( ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) /\ A. k e. { ( n + 1 ) } ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) -> A. k e. ( ( 3 ... n ) u. { ( n + 1 ) } ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) |
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| 353 | fzsuc | |- ( n e. ( ZZ>= ` 3 ) -> ( 3 ... ( n + 1 ) ) = ( ( 3 ... n ) u. { ( n + 1 ) } ) ) |
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| 354 | 353 | raleqdv | |- ( n e. ( ZZ>= ` 3 ) -> ( A. k e. ( 3 ... ( n + 1 ) ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) <-> A. k e. ( ( 3 ... n ) u. { ( n + 1 ) } ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 355 | 352 354 | imbitrrid | |- ( n e. ( ZZ>= ` 3 ) -> ( ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) /\ A. k e. { ( n + 1 ) } ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) -> A. k e. ( 3 ... ( n + 1 ) ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 356 | 351 355 | syld | |- ( n e. ( ZZ>= ` 3 ) -> ( A. k e. ( 3 ... n ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) -> A. k e. ( 3 ... ( n + 1 ) ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) ) |
| 357 | 69 71 73 75 112 356 | uzind4i | |- ( ( |_ ` N ) e. ( ZZ>= ` 3 ) -> A. k e. ( 3 ... ( |_ ` N ) ) ( theta ` k ) < ( ( log ` 2 ) x. ( ( 2 x. k ) - 3 ) ) ) |
| 358 | eluzfz2 | |- ( ( |_ ` N ) e. ( ZZ>= ` 3 ) -> ( |_ ` N ) e. ( 3 ... ( |_ ` N ) ) ) |
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| 359 | 67 357 358 | rspcdva | |- ( ( |_ ` N ) e. ( ZZ>= ` 3 ) -> ( theta ` ( |_ ` N ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) ) |
| 360 | 62 359 | syl | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( theta ` ( |_ ` N ) ) < ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) ) |
| 361 | 58 360 | eqbrtrrd | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( theta ` N ) < ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) ) |
| 362 | 33 | adantr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( 2 x. N ) e. RR ) |
| 363 | 29 | a1i | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> 3 e. RR ) |
| 364 | flle | |- ( N e. RR -> ( |_ ` N ) <_ N ) |
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| 365 | 364 | ad2antrr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( |_ ` N ) <_ N ) |
| 366 | 21 | adantr | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> N e. RR ) |
| 367 | 23 | a1i | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( 2 e. RR /\ 0 < 2 ) ) |
| 368 | lemul2 | |- ( ( ( |_ ` N ) e. RR /\ N e. RR /\ ( 2 e. RR /\ 0 < 2 ) ) -> ( ( |_ ` N ) <_ N <-> ( 2 x. ( |_ ` N ) ) <_ ( 2 x. N ) ) ) |
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| 369 | 48 366 367 368 | syl3anc | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( |_ ` N ) <_ N <-> ( 2 x. ( |_ ` N ) ) <_ ( 2 x. N ) ) ) |
| 370 | 365 369 | mpbid | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( 2 x. ( |_ ` N ) ) <_ ( 2 x. N ) ) |
| 371 | 50 362 363 370 | lesub1dd | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( 2 x. ( |_ ` N ) ) - 3 ) <_ ( ( 2 x. N ) - 3 ) ) |
| 372 | 6 | a1i | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) ) |
| 373 | lemul2 | |- ( ( ( ( 2 x. ( |_ ` N ) ) - 3 ) e. RR /\ ( ( 2 x. N ) - 3 ) e. RR /\ ( ( log ` 2 ) e. RR /\ 0 < ( log ` 2 ) ) ) -> ( ( ( 2 x. ( |_ ` N ) ) - 3 ) <_ ( ( 2 x. N ) - 3 ) <-> ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) <_ ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) ) |
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| 374 | 52 55 372 373 | syl3anc | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( ( 2 x. ( |_ ` N ) ) - 3 ) <_ ( ( 2 x. N ) - 3 ) <-> ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) <_ ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) ) |
| 375 | 371 374 | mpbid | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( ( log ` 2 ) x. ( ( 2 x. ( |_ ` N ) ) - 3 ) ) <_ ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) |
| 376 | 46 54 57 361 375 | ltletrd | |- ( ( ( N e. RR /\ 2 < N ) /\ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) -> ( theta ` N ) < ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) |
| 377 | 117 | a1i | |- ( ( N e. RR /\ 2 < N ) -> 2 e. ZZ ) |
| 378 | flcl | |- ( N e. RR -> ( |_ ` N ) e. ZZ ) |
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| 379 | 378 | adantr | |- ( ( N e. RR /\ 2 < N ) -> ( |_ ` N ) e. ZZ ) |
| 380 | ltle | |- ( ( 2 e. RR /\ N e. RR ) -> ( 2 < N -> 2 <_ N ) ) |
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| 381 | 1 380 | mpan | |- ( N e. RR -> ( 2 < N -> 2 <_ N ) ) |
| 382 | flge | |- ( ( N e. RR /\ 2 e. ZZ ) -> ( 2 <_ N <-> 2 <_ ( |_ ` N ) ) ) |
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| 383 | 117 382 | mpan2 | |- ( N e. RR -> ( 2 <_ N <-> 2 <_ ( |_ ` N ) ) ) |
| 384 | 381 383 | sylibd | |- ( N e. RR -> ( 2 < N -> 2 <_ ( |_ ` N ) ) ) |
| 385 | 384 | imp | |- ( ( N e. RR /\ 2 < N ) -> 2 <_ ( |_ ` N ) ) |
| 386 | eluz2 | |- ( ( |_ ` N ) e. ( ZZ>= ` 2 ) <-> ( 2 e. ZZ /\ ( |_ ` N ) e. ZZ /\ 2 <_ ( |_ ` N ) ) ) |
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| 387 | 377 379 385 386 | syl3anbrc | |- ( ( N e. RR /\ 2 < N ) -> ( |_ ` N ) e. ( ZZ>= ` 2 ) ) |
| 388 | uzp1 | |- ( ( |_ ` N ) e. ( ZZ>= ` 2 ) -> ( ( |_ ` N ) = 2 \/ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) ) |
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| 389 | 387 388 | syl | |- ( ( N e. RR /\ 2 < N ) -> ( ( |_ ` N ) = 2 \/ ( |_ ` N ) e. ( ZZ>= ` ( 2 + 1 ) ) ) ) |
| 390 | 44 376 389 | mpjaodan | |- ( ( N e. RR /\ 2 < N ) -> ( theta ` N ) < ( ( log ` 2 ) x. ( ( 2 x. N ) - 3 ) ) ) |