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Description: An upper bound on the prime-counting function ppi , which counts the number of primes less than N . (Contributed by Mario Carneiro, 13-Mar-2014)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | ppiub | |- ( ( N e. RR /\ 0 <_ N ) -> ( ppi ` N ) <_ ( ( N / 3 ) + 2 ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 3re | |- 3 e. RR |
|
| 2 | 1 | a1i | |- ( ( N e. RR /\ 0 <_ N ) -> 3 e. RR ) |
| 3 | simpl | |- ( ( N e. RR /\ 0 <_ N ) -> N e. RR ) |
|
| 4 | ppicl | |- ( N e. RR -> ( ppi ` N ) e. NN0 ) |
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| 5 | 4 | nn0red | |- ( N e. RR -> ( ppi ` N ) e. RR ) |
| 6 | 5 | adantr | |- ( ( N e. RR /\ 3 <_ N ) -> ( ppi ` N ) e. RR ) |
| 7 | 2re | |- 2 e. RR |
|
| 8 | resubcl | |- ( ( ( ppi ` N ) e. RR /\ 2 e. RR ) -> ( ( ppi ` N ) - 2 ) e. RR ) |
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| 9 | 6 7 8 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ppi ` N ) - 2 ) e. RR ) |
| 10 | fzfi | |- ( 4 ... ( |_ ` N ) ) e. Fin |
|
| 11 | ssrab2 | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } C_ ( 4 ... ( |_ ` N ) ) |
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| 12 | ssfi | |- ( ( ( 4 ... ( |_ ` N ) ) e. Fin /\ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } C_ ( 4 ... ( |_ ` N ) ) ) -> { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } e. Fin ) |
|
| 13 | 10 11 12 | mp2an | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } e. Fin |
| 14 | hashcl | |- ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } e. Fin -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) e. NN0 ) |
|
| 15 | 13 14 | ax-mp | |- ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) e. NN0 |
| 16 | 15 | nn0rei | |- ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) e. RR |
| 17 | 16 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) e. RR ) |
| 18 | 3nn | |- 3 e. NN |
|
| 19 | nndivre | |- ( ( N e. RR /\ 3 e. NN ) -> ( N / 3 ) e. RR ) |
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| 20 | 18 19 | mpan2 | |- ( N e. RR -> ( N / 3 ) e. RR ) |
| 21 | 20 | adantr | |- ( ( N e. RR /\ 3 <_ N ) -> ( N / 3 ) e. RR ) |
| 22 | ppifl | |- ( N e. RR -> ( ppi ` ( |_ ` N ) ) = ( ppi ` N ) ) |
|
| 23 | 22 | adantr | |- ( ( N e. RR /\ 3 <_ N ) -> ( ppi ` ( |_ ` N ) ) = ( ppi ` N ) ) |
| 24 | ppi3 | |- ( ppi ` 3 ) = 2 |
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| 25 | 24 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> ( ppi ` 3 ) = 2 ) |
| 26 | 23 25 | oveq12d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ppi ` ( |_ ` N ) ) - ( ppi ` 3 ) ) = ( ( ppi ` N ) - 2 ) ) |
| 27 | 3z | |- 3 e. ZZ |
|
| 28 | 27 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 3 e. ZZ ) |
| 29 | flcl | |- ( N e. RR -> ( |_ ` N ) e. ZZ ) |
|
| 30 | 29 | adantr | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` N ) e. ZZ ) |
| 31 | flge | |- ( ( N e. RR /\ 3 e. ZZ ) -> ( 3 <_ N <-> 3 <_ ( |_ ` N ) ) ) |
|
| 32 | 27 31 | mpan2 | |- ( N e. RR -> ( 3 <_ N <-> 3 <_ ( |_ ` N ) ) ) |
| 33 | 32 | biimpa | |- ( ( N e. RR /\ 3 <_ N ) -> 3 <_ ( |_ ` N ) ) |
| 34 | eluz2 | |- ( ( |_ ` N ) e. ( ZZ>= ` 3 ) <-> ( 3 e. ZZ /\ ( |_ ` N ) e. ZZ /\ 3 <_ ( |_ ` N ) ) ) |
|
| 35 | 28 30 33 34 | syl3anbrc | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` N ) e. ( ZZ>= ` 3 ) ) |
| 36 | ppidif | |- ( ( |_ ` N ) e. ( ZZ>= ` 3 ) -> ( ( ppi ` ( |_ ` N ) ) - ( ppi ` 3 ) ) = ( # ` ( ( ( 3 + 1 ) ... ( |_ ` N ) ) i^i Prime ) ) ) |
|
| 37 | 35 36 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ppi ` ( |_ ` N ) ) - ( ppi ` 3 ) ) = ( # ` ( ( ( 3 + 1 ) ... ( |_ ` N ) ) i^i Prime ) ) ) |
| 38 | df-4 | |- 4 = ( 3 + 1 ) |
|
| 39 | 38 | oveq1i | |- ( 4 ... ( |_ ` N ) ) = ( ( 3 + 1 ) ... ( |_ ` N ) ) |
| 40 | 39 | ineq1i | |- ( ( 4 ... ( |_ ` N ) ) i^i Prime ) = ( ( ( 3 + 1 ) ... ( |_ ` N ) ) i^i Prime ) |
| 41 | 40 | fveq2i | |- ( # ` ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ) = ( # ` ( ( ( 3 + 1 ) ... ( |_ ` N ) ) i^i Prime ) ) |
| 42 | 37 41 | eqtr4di | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ppi ` ( |_ ` N ) ) - ( ppi ` 3 ) ) = ( # ` ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ) ) |
| 43 | 26 42 | eqtr3d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ppi ` N ) - 2 ) = ( # ` ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ) ) |
| 44 | dfin5 | |- ( ( 4 ... ( |_ ` N ) ) i^i Prime ) = { k e. ( 4 ... ( |_ ` N ) ) | k e. Prime } |
|
| 45 | elfzle1 | |- ( k e. ( 4 ... ( |_ ` N ) ) -> 4 <_ k ) |
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| 46 | ppiublem2 | |- ( ( k e. Prime /\ 4 <_ k ) -> ( k mod 6 ) e. { 1 , 5 } ) |
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| 47 | 46 | expcom | |- ( 4 <_ k -> ( k e. Prime -> ( k mod 6 ) e. { 1 , 5 } ) ) |
| 48 | 45 47 | syl | |- ( k e. ( 4 ... ( |_ ` N ) ) -> ( k e. Prime -> ( k mod 6 ) e. { 1 , 5 } ) ) |
| 49 | 48 | ss2rabi | |- { k e. ( 4 ... ( |_ ` N ) ) | k e. Prime } C_ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } |
| 50 | 44 49 | eqsstri | |- ( ( 4 ... ( |_ ` N ) ) i^i Prime ) C_ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } |
| 51 | ssdomg | |- ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } e. Fin -> ( ( ( 4 ... ( |_ ` N ) ) i^i Prime ) C_ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } -> ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ~<_ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) ) |
|
| 52 | 13 50 51 | mp2 | |- ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ~<_ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } |
| 53 | inss1 | |- ( ( 4 ... ( |_ ` N ) ) i^i Prime ) C_ ( 4 ... ( |_ ` N ) ) |
|
| 54 | ssfi | |- ( ( ( 4 ... ( |_ ` N ) ) e. Fin /\ ( ( 4 ... ( |_ ` N ) ) i^i Prime ) C_ ( 4 ... ( |_ ` N ) ) ) -> ( ( 4 ... ( |_ ` N ) ) i^i Prime ) e. Fin ) |
|
| 55 | 10 53 54 | mp2an | |- ( ( 4 ... ( |_ ` N ) ) i^i Prime ) e. Fin |
| 56 | hashdom | |- ( ( ( ( 4 ... ( |_ ` N ) ) i^i Prime ) e. Fin /\ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } e. Fin ) -> ( ( # ` ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ) <_ ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) <-> ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ~<_ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) ) |
|
| 57 | 55 13 56 | mp2an | |- ( ( # ` ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ) <_ ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) <-> ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ~<_ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) |
| 58 | 52 57 | mpbir | |- ( # ` ( ( 4 ... ( |_ ` N ) ) i^i Prime ) ) <_ ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) |
| 59 | 43 58 | eqbrtrdi | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ppi ` N ) - 2 ) <_ ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) ) |
| 60 | reflcl | |- ( N e. RR -> ( |_ ` N ) e. RR ) |
|
| 61 | 60 | adantr | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` N ) e. RR ) |
| 62 | peano2rem | |- ( ( |_ ` N ) e. RR -> ( ( |_ ` N ) - 1 ) e. RR ) |
|
| 63 | 61 62 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` N ) - 1 ) e. RR ) |
| 64 | 6nn | |- 6 e. NN |
|
| 65 | nndivre | |- ( ( ( ( |_ ` N ) - 1 ) e. RR /\ 6 e. NN ) -> ( ( ( |_ ` N ) - 1 ) / 6 ) e. RR ) |
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| 66 | 63 64 65 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( |_ ` N ) - 1 ) / 6 ) e. RR ) |
| 67 | reflcl | |- ( ( ( ( |_ ` N ) - 1 ) / 6 ) e. RR -> ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) e. RR ) |
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| 68 | 66 67 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) e. RR ) |
| 69 | 5re | |- 5 e. RR |
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| 70 | resubcl | |- ( ( ( |_ ` N ) e. RR /\ 5 e. RR ) -> ( ( |_ ` N ) - 5 ) e. RR ) |
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| 71 | 61 69 70 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` N ) - 5 ) e. RR ) |
| 72 | nndivre | |- ( ( ( ( |_ ` N ) - 5 ) e. RR /\ 6 e. NN ) -> ( ( ( |_ ` N ) - 5 ) / 6 ) e. RR ) |
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| 73 | 71 64 72 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( |_ ` N ) - 5 ) / 6 ) e. RR ) |
| 74 | reflcl | |- ( ( ( ( |_ ` N ) - 5 ) / 6 ) e. RR -> ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) e. RR ) |
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| 75 | 73 74 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) e. RR ) |
| 76 | peano2re | |- ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) e. RR -> ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) e. RR ) |
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| 77 | 75 76 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) e. RR ) |
| 78 | peano2rem | |- ( N e. RR -> ( N - 1 ) e. RR ) |
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| 79 | 78 | adantr | |- ( ( N e. RR /\ 3 <_ N ) -> ( N - 1 ) e. RR ) |
| 80 | nndivre | |- ( ( ( N - 1 ) e. RR /\ 6 e. NN ) -> ( ( N - 1 ) / 6 ) e. RR ) |
|
| 81 | 79 64 80 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( N - 1 ) / 6 ) e. RR ) |
| 82 | simpl | |- ( ( N e. RR /\ 3 <_ N ) -> N e. RR ) |
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| 83 | resubcl | |- ( ( N e. RR /\ 5 e. RR ) -> ( N - 5 ) e. RR ) |
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| 84 | 82 69 83 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( N - 5 ) e. RR ) |
| 85 | nndivre | |- ( ( ( N - 5 ) e. RR /\ 6 e. NN ) -> ( ( N - 5 ) / 6 ) e. RR ) |
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| 86 | 84 64 85 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( N - 5 ) / 6 ) e. RR ) |
| 87 | peano2re | |- ( ( ( N - 5 ) / 6 ) e. RR -> ( ( ( N - 5 ) / 6 ) + 1 ) e. RR ) |
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| 88 | 86 87 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( N - 5 ) / 6 ) + 1 ) e. RR ) |
| 89 | flle | |- ( ( ( ( |_ ` N ) - 1 ) / 6 ) e. RR -> ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) <_ ( ( ( |_ ` N ) - 1 ) / 6 ) ) |
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| 90 | 66 89 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) <_ ( ( ( |_ ` N ) - 1 ) / 6 ) ) |
| 91 | 1re | |- 1 e. RR |
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| 92 | 91 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 1 e. RR ) |
| 93 | flle | |- ( N e. RR -> ( |_ ` N ) <_ N ) |
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| 94 | 93 | adantr | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` N ) <_ N ) |
| 95 | 61 82 92 94 | lesub1dd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` N ) - 1 ) <_ ( N - 1 ) ) |
| 96 | 6re | |- 6 e. RR |
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| 97 | 96 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 6 e. RR ) |
| 98 | 6pos | |- 0 < 6 |
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| 99 | 98 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 0 < 6 ) |
| 100 | lediv1 | |- ( ( ( ( |_ ` N ) - 1 ) e. RR /\ ( N - 1 ) e. RR /\ ( 6 e. RR /\ 0 < 6 ) ) -> ( ( ( |_ ` N ) - 1 ) <_ ( N - 1 ) <-> ( ( ( |_ ` N ) - 1 ) / 6 ) <_ ( ( N - 1 ) / 6 ) ) ) |
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| 101 | 63 79 97 99 100 | syl112anc | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( |_ ` N ) - 1 ) <_ ( N - 1 ) <-> ( ( ( |_ ` N ) - 1 ) / 6 ) <_ ( ( N - 1 ) / 6 ) ) ) |
| 102 | 95 101 | mpbid | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( |_ ` N ) - 1 ) / 6 ) <_ ( ( N - 1 ) / 6 ) ) |
| 103 | 68 66 81 90 102 | letrd | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) <_ ( ( N - 1 ) / 6 ) ) |
| 104 | flle | |- ( ( ( ( |_ ` N ) - 5 ) / 6 ) e. RR -> ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) <_ ( ( ( |_ ` N ) - 5 ) / 6 ) ) |
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| 105 | 73 104 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) <_ ( ( ( |_ ` N ) - 5 ) / 6 ) ) |
| 106 | 69 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 5 e. RR ) |
| 107 | 61 82 106 94 | lesub1dd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` N ) - 5 ) <_ ( N - 5 ) ) |
| 108 | lediv1 | |- ( ( ( ( |_ ` N ) - 5 ) e. RR /\ ( N - 5 ) e. RR /\ ( 6 e. RR /\ 0 < 6 ) ) -> ( ( ( |_ ` N ) - 5 ) <_ ( N - 5 ) <-> ( ( ( |_ ` N ) - 5 ) / 6 ) <_ ( ( N - 5 ) / 6 ) ) ) |
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| 109 | 71 84 97 99 108 | syl112anc | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( |_ ` N ) - 5 ) <_ ( N - 5 ) <-> ( ( ( |_ ` N ) - 5 ) / 6 ) <_ ( ( N - 5 ) / 6 ) ) ) |
| 110 | 107 109 | mpbid | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( |_ ` N ) - 5 ) / 6 ) <_ ( ( N - 5 ) / 6 ) ) |
| 111 | 75 73 86 105 110 | letrd | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) <_ ( ( N - 5 ) / 6 ) ) |
| 112 | 75 86 92 111 | leadd1dd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) <_ ( ( ( N - 5 ) / 6 ) + 1 ) ) |
| 113 | 68 77 81 88 103 112 | le2addd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) + ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) ) <_ ( ( ( N - 1 ) / 6 ) + ( ( ( N - 5 ) / 6 ) + 1 ) ) ) |
| 114 | ovex | |- ( k mod 6 ) e. _V |
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| 115 | 114 | elpr | |- ( ( k mod 6 ) e. { 1 , 5 } <-> ( ( k mod 6 ) = 1 \/ ( k mod 6 ) = 5 ) ) |
| 116 | 115 | rabbii | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } = { k e. ( 4 ... ( |_ ` N ) ) | ( ( k mod 6 ) = 1 \/ ( k mod 6 ) = 5 ) } |
| 117 | unrab | |- ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } u. { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) = { k e. ( 4 ... ( |_ ` N ) ) | ( ( k mod 6 ) = 1 \/ ( k mod 6 ) = 5 ) } |
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| 118 | 116 117 | eqtr4i | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } = ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } u. { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) |
| 119 | 118 | fveq2i | |- ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) = ( # ` ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } u. { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) ) |
| 120 | ssrab2 | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } C_ ( 4 ... ( |_ ` N ) ) |
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| 121 | ssfi | |- ( ( ( 4 ... ( |_ ` N ) ) e. Fin /\ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } C_ ( 4 ... ( |_ ` N ) ) ) -> { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } e. Fin ) |
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| 122 | 10 120 121 | mp2an | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } e. Fin |
| 123 | ssrab2 | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } C_ ( 4 ... ( |_ ` N ) ) |
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| 124 | ssfi | |- ( ( ( 4 ... ( |_ ` N ) ) e. Fin /\ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } C_ ( 4 ... ( |_ ` N ) ) ) -> { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } e. Fin ) |
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| 125 | 10 123 124 | mp2an | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } e. Fin |
| 126 | inrab | |- ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } i^i { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) = { k e. ( 4 ... ( |_ ` N ) ) | ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) } |
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| 127 | rabeq0 | |- ( { k e. ( 4 ... ( |_ ` N ) ) | ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) } = (/) <-> A. k e. ( 4 ... ( |_ ` N ) ) -. ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) ) |
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| 128 | 1lt5 | |- 1 < 5 |
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| 129 | 91 128 | ltneii | |- 1 =/= 5 |
| 130 | eqtr2 | |- ( ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) -> 1 = 5 ) |
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| 131 | 130 | necon3ai | |- ( 1 =/= 5 -> -. ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) ) |
| 132 | 129 131 | ax-mp | |- -. ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) |
| 133 | 132 | a1i | |- ( k e. ( 4 ... ( |_ ` N ) ) -> -. ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) ) |
| 134 | 127 133 | mprgbir | |- { k e. ( 4 ... ( |_ ` N ) ) | ( ( k mod 6 ) = 1 /\ ( k mod 6 ) = 5 ) } = (/) |
| 135 | 126 134 | eqtri | |- ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } i^i { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) = (/) |
| 136 | hashun | |- ( ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } e. Fin /\ { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } e. Fin /\ ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } i^i { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) = (/) ) -> ( # ` ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } u. { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) ) = ( ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } ) + ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) ) ) |
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| 137 | 122 125 135 136 | mp3an | |- ( # ` ( { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } u. { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) ) = ( ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } ) + ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) ) |
| 138 | 119 137 | eqtri | |- ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) = ( ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } ) + ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) ) |
| 139 | elfzelz | |- ( k e. ( 4 ... ( |_ ` N ) ) -> k e. ZZ ) |
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| 140 | nnrp | |- ( 6 e. NN -> 6 e. RR+ ) |
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| 141 | 64 140 | ax-mp | |- 6 e. RR+ |
| 142 | 0le1 | |- 0 <_ 1 |
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| 143 | 1lt6 | |- 1 < 6 |
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| 144 | modid | |- ( ( ( 1 e. RR /\ 6 e. RR+ ) /\ ( 0 <_ 1 /\ 1 < 6 ) ) -> ( 1 mod 6 ) = 1 ) |
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| 145 | 91 141 142 143 144 | mp4an | |- ( 1 mod 6 ) = 1 |
| 146 | 145 | eqeq2i | |- ( ( k mod 6 ) = ( 1 mod 6 ) <-> ( k mod 6 ) = 1 ) |
| 147 | 1z | |- 1 e. ZZ |
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| 148 | moddvds | |- ( ( 6 e. NN /\ k e. ZZ /\ 1 e. ZZ ) -> ( ( k mod 6 ) = ( 1 mod 6 ) <-> 6 || ( k - 1 ) ) ) |
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| 149 | 64 147 148 | mp3an13 | |- ( k e. ZZ -> ( ( k mod 6 ) = ( 1 mod 6 ) <-> 6 || ( k - 1 ) ) ) |
| 150 | 146 149 | bitr3id | |- ( k e. ZZ -> ( ( k mod 6 ) = 1 <-> 6 || ( k - 1 ) ) ) |
| 151 | 139 150 | syl | |- ( k e. ( 4 ... ( |_ ` N ) ) -> ( ( k mod 6 ) = 1 <-> 6 || ( k - 1 ) ) ) |
| 152 | 151 | rabbiia | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } = { k e. ( 4 ... ( |_ ` N ) ) | 6 || ( k - 1 ) } |
| 153 | 152 | fveq2i | |- ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } ) = ( # ` { k e. ( 4 ... ( |_ ` N ) ) | 6 || ( k - 1 ) } ) |
| 154 | 64 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 6 e. NN ) |
| 155 | 4z | |- 4 e. ZZ |
|
| 156 | 155 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 4 e. ZZ ) |
| 157 | 4m1e3 | |- ( 4 - 1 ) = 3 |
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| 158 | 157 | fveq2i | |- ( ZZ>= ` ( 4 - 1 ) ) = ( ZZ>= ` 3 ) |
| 159 | 35 158 | eleqtrrdi | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` N ) e. ( ZZ>= ` ( 4 - 1 ) ) ) |
| 160 | 147 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 1 e. ZZ ) |
| 161 | 154 156 159 160 | hashdvds | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | 6 || ( k - 1 ) } ) = ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 1 ) / 6 ) ) ) ) |
| 162 | 153 161 | eqtrid | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } ) = ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 1 ) / 6 ) ) ) ) |
| 163 | 2cn | |- 2 e. CC |
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| 164 | ax-1cn | |- 1 e. CC |
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| 165 | df-3 | |- 3 = ( 2 + 1 ) |
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| 166 | 157 165 | eqtri | |- ( 4 - 1 ) = ( 2 + 1 ) |
| 167 | 163 164 166 | mvrraddi | |- ( ( 4 - 1 ) - 1 ) = 2 |
| 168 | 167 | oveq1i | |- ( ( ( 4 - 1 ) - 1 ) / 6 ) = ( 2 / 6 ) |
| 169 | 168 | fveq2i | |- ( |_ ` ( ( ( 4 - 1 ) - 1 ) / 6 ) ) = ( |_ ` ( 2 / 6 ) ) |
| 170 | 0re | |- 0 e. RR |
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| 171 | 64 | nnne0i | |- 6 =/= 0 |
| 172 | 7 96 171 | redivcli | |- ( 2 / 6 ) e. RR |
| 173 | 2pos | |- 0 < 2 |
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| 174 | 7 96 173 98 | divgt0ii | |- 0 < ( 2 / 6 ) |
| 175 | 170 172 174 | ltleii | |- 0 <_ ( 2 / 6 ) |
| 176 | 2lt6 | |- 2 < 6 |
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| 177 | 6cn | |- 6 e. CC |
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| 178 | 177 | mulridi | |- ( 6 x. 1 ) = 6 |
| 179 | 176 178 | breqtrri | |- 2 < ( 6 x. 1 ) |
| 180 | 96 98 | pm3.2i | |- ( 6 e. RR /\ 0 < 6 ) |
| 181 | ltdivmul | |- ( ( 2 e. RR /\ 1 e. RR /\ ( 6 e. RR /\ 0 < 6 ) ) -> ( ( 2 / 6 ) < 1 <-> 2 < ( 6 x. 1 ) ) ) |
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| 182 | 7 91 180 181 | mp3an | |- ( ( 2 / 6 ) < 1 <-> 2 < ( 6 x. 1 ) ) |
| 183 | 179 182 | mpbir | |- ( 2 / 6 ) < 1 |
| 184 | 1e0p1 | |- 1 = ( 0 + 1 ) |
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| 185 | 183 184 | breqtri | |- ( 2 / 6 ) < ( 0 + 1 ) |
| 186 | 0z | |- 0 e. ZZ |
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| 187 | flbi | |- ( ( ( 2 / 6 ) e. RR /\ 0 e. ZZ ) -> ( ( |_ ` ( 2 / 6 ) ) = 0 <-> ( 0 <_ ( 2 / 6 ) /\ ( 2 / 6 ) < ( 0 + 1 ) ) ) ) |
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| 188 | 172 186 187 | mp2an | |- ( ( |_ ` ( 2 / 6 ) ) = 0 <-> ( 0 <_ ( 2 / 6 ) /\ ( 2 / 6 ) < ( 0 + 1 ) ) ) |
| 189 | 175 185 188 | mpbir2an | |- ( |_ ` ( 2 / 6 ) ) = 0 |
| 190 | 169 189 | eqtri | |- ( |_ ` ( ( ( 4 - 1 ) - 1 ) / 6 ) ) = 0 |
| 191 | 190 | oveq2i | |- ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 1 ) / 6 ) ) ) = ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) - 0 ) |
| 192 | 66 | flcld | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) e. ZZ ) |
| 193 | 192 | zcnd | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) e. CC ) |
| 194 | 193 | subid1d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) - 0 ) = ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) ) |
| 195 | 191 194 | eqtrid | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 1 ) / 6 ) ) ) = ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) ) |
| 196 | 162 195 | eqtrd | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } ) = ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) ) |
| 197 | 5pos | |- 0 < 5 |
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| 198 | 170 69 197 | ltleii | |- 0 <_ 5 |
| 199 | 5lt6 | |- 5 < 6 |
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| 200 | modid | |- ( ( ( 5 e. RR /\ 6 e. RR+ ) /\ ( 0 <_ 5 /\ 5 < 6 ) ) -> ( 5 mod 6 ) = 5 ) |
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| 201 | 69 141 198 199 200 | mp4an | |- ( 5 mod 6 ) = 5 |
| 202 | 201 | eqeq2i | |- ( ( k mod 6 ) = ( 5 mod 6 ) <-> ( k mod 6 ) = 5 ) |
| 203 | 5nn | |- 5 e. NN |
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| 204 | 203 | nnzi | |- 5 e. ZZ |
| 205 | moddvds | |- ( ( 6 e. NN /\ k e. ZZ /\ 5 e. ZZ ) -> ( ( k mod 6 ) = ( 5 mod 6 ) <-> 6 || ( k - 5 ) ) ) |
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| 206 | 64 204 205 | mp3an13 | |- ( k e. ZZ -> ( ( k mod 6 ) = ( 5 mod 6 ) <-> 6 || ( k - 5 ) ) ) |
| 207 | 202 206 | bitr3id | |- ( k e. ZZ -> ( ( k mod 6 ) = 5 <-> 6 || ( k - 5 ) ) ) |
| 208 | 139 207 | syl | |- ( k e. ( 4 ... ( |_ ` N ) ) -> ( ( k mod 6 ) = 5 <-> 6 || ( k - 5 ) ) ) |
| 209 | 208 | rabbiia | |- { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } = { k e. ( 4 ... ( |_ ` N ) ) | 6 || ( k - 5 ) } |
| 210 | 209 | fveq2i | |- ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) = ( # ` { k e. ( 4 ... ( |_ ` N ) ) | 6 || ( k - 5 ) } ) |
| 211 | 204 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 5 e. ZZ ) |
| 212 | 154 156 159 211 | hashdvds | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | 6 || ( k - 5 ) } ) = ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 5 ) / 6 ) ) ) ) |
| 213 | 210 212 | eqtrid | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) = ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 5 ) / 6 ) ) ) ) |
| 214 | 157 | oveq1i | |- ( ( 4 - 1 ) - 5 ) = ( 3 - 5 ) |
| 215 | 5cn | |- 5 e. CC |
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| 216 | 3cn | |- 3 e. CC |
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| 217 | 215 216 | negsubdi2i | |- -u ( 5 - 3 ) = ( 3 - 5 ) |
| 218 | 3p2e5 | |- ( 3 + 2 ) = 5 |
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| 219 | 218 | oveq1i | |- ( ( 3 + 2 ) - 3 ) = ( 5 - 3 ) |
| 220 | pncan2 | |- ( ( 3 e. CC /\ 2 e. CC ) -> ( ( 3 + 2 ) - 3 ) = 2 ) |
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| 221 | 216 163 220 | mp2an | |- ( ( 3 + 2 ) - 3 ) = 2 |
| 222 | 219 221 | eqtr3i | |- ( 5 - 3 ) = 2 |
| 223 | 222 | negeqi | |- -u ( 5 - 3 ) = -u 2 |
| 224 | 214 217 223 | 3eqtr2i | |- ( ( 4 - 1 ) - 5 ) = -u 2 |
| 225 | 224 | oveq1i | |- ( ( ( 4 - 1 ) - 5 ) / 6 ) = ( -u 2 / 6 ) |
| 226 | divneg | |- ( ( 2 e. CC /\ 6 e. CC /\ 6 =/= 0 ) -> -u ( 2 / 6 ) = ( -u 2 / 6 ) ) |
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| 227 | 163 177 171 226 | mp3an | |- -u ( 2 / 6 ) = ( -u 2 / 6 ) |
| 228 | 225 227 | eqtr4i | |- ( ( ( 4 - 1 ) - 5 ) / 6 ) = -u ( 2 / 6 ) |
| 229 | 228 | fveq2i | |- ( |_ ` ( ( ( 4 - 1 ) - 5 ) / 6 ) ) = ( |_ ` -u ( 2 / 6 ) ) |
| 230 | 172 91 183 | ltleii | |- ( 2 / 6 ) <_ 1 |
| 231 | 172 91 | lenegi | |- ( ( 2 / 6 ) <_ 1 <-> -u 1 <_ -u ( 2 / 6 ) ) |
| 232 | 230 231 | mpbi | |- -u 1 <_ -u ( 2 / 6 ) |
| 233 | 170 172 | ltnegi | |- ( 0 < ( 2 / 6 ) <-> -u ( 2 / 6 ) < -u 0 ) |
| 234 | 174 233 | mpbi | |- -u ( 2 / 6 ) < -u 0 |
| 235 | neg0 | |- -u 0 = 0 |
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| 236 | 1pneg1e0 | |- ( 1 + -u 1 ) = 0 |
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| 237 | 235 236 | eqtr4i | |- -u 0 = ( 1 + -u 1 ) |
| 238 | neg1cn | |- -u 1 e. CC |
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| 239 | 238 164 | addcomi | |- ( -u 1 + 1 ) = ( 1 + -u 1 ) |
| 240 | 237 239 | eqtr4i | |- -u 0 = ( -u 1 + 1 ) |
| 241 | 234 240 | breqtri | |- -u ( 2 / 6 ) < ( -u 1 + 1 ) |
| 242 | 172 | renegcli | |- -u ( 2 / 6 ) e. RR |
| 243 | neg1z | |- -u 1 e. ZZ |
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| 244 | flbi | |- ( ( -u ( 2 / 6 ) e. RR /\ -u 1 e. ZZ ) -> ( ( |_ ` -u ( 2 / 6 ) ) = -u 1 <-> ( -u 1 <_ -u ( 2 / 6 ) /\ -u ( 2 / 6 ) < ( -u 1 + 1 ) ) ) ) |
|
| 245 | 242 243 244 | mp2an | |- ( ( |_ ` -u ( 2 / 6 ) ) = -u 1 <-> ( -u 1 <_ -u ( 2 / 6 ) /\ -u ( 2 / 6 ) < ( -u 1 + 1 ) ) ) |
| 246 | 232 241 245 | mpbir2an | |- ( |_ ` -u ( 2 / 6 ) ) = -u 1 |
| 247 | 229 246 | eqtri | |- ( |_ ` ( ( ( 4 - 1 ) - 5 ) / 6 ) ) = -u 1 |
| 248 | 247 | oveq2i | |- ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 5 ) / 6 ) ) ) = ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) - -u 1 ) |
| 249 | 73 | flcld | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) e. ZZ ) |
| 250 | 249 | zcnd | |- ( ( N e. RR /\ 3 <_ N ) -> ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) e. CC ) |
| 251 | subneg | |- ( ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) e. CC /\ 1 e. CC ) -> ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) - -u 1 ) = ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) ) |
|
| 252 | 250 164 251 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) - -u 1 ) = ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) ) |
| 253 | 248 252 | eqtrid | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) - ( |_ ` ( ( ( 4 - 1 ) - 5 ) / 6 ) ) ) = ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) ) |
| 254 | 213 253 | eqtrd | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) = ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) ) |
| 255 | 196 254 | oveq12d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 1 } ) + ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) = 5 } ) ) = ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) + ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) ) ) |
| 256 | 138 255 | eqtrid | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) = ( ( |_ ` ( ( ( |_ ` N ) - 1 ) / 6 ) ) + ( ( |_ ` ( ( ( |_ ` N ) - 5 ) / 6 ) ) + 1 ) ) ) |
| 257 | 82 | recnd | |- ( ( N e. RR /\ 3 <_ N ) -> N e. CC ) |
| 258 | 257 | 2timesd | |- ( ( N e. RR /\ 3 <_ N ) -> ( 2 x. N ) = ( N + N ) ) |
| 259 | df-6 | |- 6 = ( 5 + 1 ) |
|
| 260 | 215 164 | addcomi | |- ( 5 + 1 ) = ( 1 + 5 ) |
| 261 | 259 260 | eqtri | |- 6 = ( 1 + 5 ) |
| 262 | 261 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 6 = ( 1 + 5 ) ) |
| 263 | 258 262 | oveq12d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( 2 x. N ) - 6 ) = ( ( N + N ) - ( 1 + 5 ) ) ) |
| 264 | addsub4 | |- ( ( ( N e. CC /\ N e. CC ) /\ ( 1 e. CC /\ 5 e. CC ) ) -> ( ( N + N ) - ( 1 + 5 ) ) = ( ( N - 1 ) + ( N - 5 ) ) ) |
|
| 265 | 164 215 264 | mpanr12 | |- ( ( N e. CC /\ N e. CC ) -> ( ( N + N ) - ( 1 + 5 ) ) = ( ( N - 1 ) + ( N - 5 ) ) ) |
| 266 | 257 257 265 | syl2anc | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( N + N ) - ( 1 + 5 ) ) = ( ( N - 1 ) + ( N - 5 ) ) ) |
| 267 | 263 266 | eqtrd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( 2 x. N ) - 6 ) = ( ( N - 1 ) + ( N - 5 ) ) ) |
| 268 | 267 | oveq1d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( 2 x. N ) - 6 ) / 6 ) = ( ( ( N - 1 ) + ( N - 5 ) ) / 6 ) ) |
| 269 | mulcl | |- ( ( 2 e. CC /\ N e. CC ) -> ( 2 x. N ) e. CC ) |
|
| 270 | 163 257 269 | sylancr | |- ( ( N e. RR /\ 3 <_ N ) -> ( 2 x. N ) e. CC ) |
| 271 | 177 171 | pm3.2i | |- ( 6 e. CC /\ 6 =/= 0 ) |
| 272 | divsubdir | |- ( ( ( 2 x. N ) e. CC /\ 6 e. CC /\ ( 6 e. CC /\ 6 =/= 0 ) ) -> ( ( ( 2 x. N ) - 6 ) / 6 ) = ( ( ( 2 x. N ) / 6 ) - ( 6 / 6 ) ) ) |
|
| 273 | 177 271 272 | mp3an23 | |- ( ( 2 x. N ) e. CC -> ( ( ( 2 x. N ) - 6 ) / 6 ) = ( ( ( 2 x. N ) / 6 ) - ( 6 / 6 ) ) ) |
| 274 | 270 273 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( 2 x. N ) - 6 ) / 6 ) = ( ( ( 2 x. N ) / 6 ) - ( 6 / 6 ) ) ) |
| 275 | 3t2e6 | |- ( 3 x. 2 ) = 6 |
|
| 276 | 216 163 | mulcomi | |- ( 3 x. 2 ) = ( 2 x. 3 ) |
| 277 | 275 276 | eqtr3i | |- 6 = ( 2 x. 3 ) |
| 278 | 277 | oveq2i | |- ( ( 2 x. N ) / 6 ) = ( ( 2 x. N ) / ( 2 x. 3 ) ) |
| 279 | 3ne0 | |- 3 =/= 0 |
|
| 280 | 216 279 | pm3.2i | |- ( 3 e. CC /\ 3 =/= 0 ) |
| 281 | 2cnne0 | |- ( 2 e. CC /\ 2 =/= 0 ) |
|
| 282 | divcan5 | |- ( ( N e. CC /\ ( 3 e. CC /\ 3 =/= 0 ) /\ ( 2 e. CC /\ 2 =/= 0 ) ) -> ( ( 2 x. N ) / ( 2 x. 3 ) ) = ( N / 3 ) ) |
|
| 283 | 280 281 282 | mp3an23 | |- ( N e. CC -> ( ( 2 x. N ) / ( 2 x. 3 ) ) = ( N / 3 ) ) |
| 284 | 257 283 | syl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( 2 x. N ) / ( 2 x. 3 ) ) = ( N / 3 ) ) |
| 285 | 278 284 | eqtrid | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( 2 x. N ) / 6 ) = ( N / 3 ) ) |
| 286 | 177 171 | dividi | |- ( 6 / 6 ) = 1 |
| 287 | 286 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> ( 6 / 6 ) = 1 ) |
| 288 | 285 287 | oveq12d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( 2 x. N ) / 6 ) - ( 6 / 6 ) ) = ( ( N / 3 ) - 1 ) ) |
| 289 | 274 288 | eqtrd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( 2 x. N ) - 6 ) / 6 ) = ( ( N / 3 ) - 1 ) ) |
| 290 | 79 | recnd | |- ( ( N e. RR /\ 3 <_ N ) -> ( N - 1 ) e. CC ) |
| 291 | 84 | recnd | |- ( ( N e. RR /\ 3 <_ N ) -> ( N - 5 ) e. CC ) |
| 292 | divdir | |- ( ( ( N - 1 ) e. CC /\ ( N - 5 ) e. CC /\ ( 6 e. CC /\ 6 =/= 0 ) ) -> ( ( ( N - 1 ) + ( N - 5 ) ) / 6 ) = ( ( ( N - 1 ) / 6 ) + ( ( N - 5 ) / 6 ) ) ) |
|
| 293 | 271 292 | mp3an3 | |- ( ( ( N - 1 ) e. CC /\ ( N - 5 ) e. CC ) -> ( ( ( N - 1 ) + ( N - 5 ) ) / 6 ) = ( ( ( N - 1 ) / 6 ) + ( ( N - 5 ) / 6 ) ) ) |
| 294 | 290 291 293 | syl2anc | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( N - 1 ) + ( N - 5 ) ) / 6 ) = ( ( ( N - 1 ) / 6 ) + ( ( N - 5 ) / 6 ) ) ) |
| 295 | 268 289 294 | 3eqtr3d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( N / 3 ) - 1 ) = ( ( ( N - 1 ) / 6 ) + ( ( N - 5 ) / 6 ) ) ) |
| 296 | 295 | oveq1d | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( N / 3 ) - 1 ) + 1 ) = ( ( ( ( N - 1 ) / 6 ) + ( ( N - 5 ) / 6 ) ) + 1 ) ) |
| 297 | 21 | recnd | |- ( ( N e. RR /\ 3 <_ N ) -> ( N / 3 ) e. CC ) |
| 298 | npcan | |- ( ( ( N / 3 ) e. CC /\ 1 e. CC ) -> ( ( ( N / 3 ) - 1 ) + 1 ) = ( N / 3 ) ) |
|
| 299 | 297 164 298 | sylancl | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( N / 3 ) - 1 ) + 1 ) = ( N / 3 ) ) |
| 300 | 81 | recnd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( N - 1 ) / 6 ) e. CC ) |
| 301 | 86 | recnd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( N - 5 ) / 6 ) e. CC ) |
| 302 | 164 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 1 e. CC ) |
| 303 | 300 301 302 | addassd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( ( N - 1 ) / 6 ) + ( ( N - 5 ) / 6 ) ) + 1 ) = ( ( ( N - 1 ) / 6 ) + ( ( ( N - 5 ) / 6 ) + 1 ) ) ) |
| 304 | 296 299 303 | 3eqtr3d | |- ( ( N e. RR /\ 3 <_ N ) -> ( N / 3 ) = ( ( ( N - 1 ) / 6 ) + ( ( ( N - 5 ) / 6 ) + 1 ) ) ) |
| 305 | 113 256 304 | 3brtr4d | |- ( ( N e. RR /\ 3 <_ N ) -> ( # ` { k e. ( 4 ... ( |_ ` N ) ) | ( k mod 6 ) e. { 1 , 5 } } ) <_ ( N / 3 ) ) |
| 306 | 9 17 21 59 305 | letrd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ppi ` N ) - 2 ) <_ ( N / 3 ) ) |
| 307 | 7 | a1i | |- ( ( N e. RR /\ 3 <_ N ) -> 2 e. RR ) |
| 308 | 6 307 21 | lesubaddd | |- ( ( N e. RR /\ 3 <_ N ) -> ( ( ( ppi ` N ) - 2 ) <_ ( N / 3 ) <-> ( ppi ` N ) <_ ( ( N / 3 ) + 2 ) ) ) |
| 309 | 306 308 | mpbid | |- ( ( N e. RR /\ 3 <_ N ) -> ( ppi ` N ) <_ ( ( N / 3 ) + 2 ) ) |
| 310 | 309 | adantlr | |- ( ( ( N e. RR /\ 0 <_ N ) /\ 3 <_ N ) -> ( ppi ` N ) <_ ( ( N / 3 ) + 2 ) ) |
| 311 | 5 | ad2antrr | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> ( ppi ` N ) e. RR ) |
| 312 | 7 | a1i | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> 2 e. RR ) |
| 313 | 20 | ad2antrr | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> ( N / 3 ) e. RR ) |
| 314 | readdcl | |- ( ( ( N / 3 ) e. RR /\ 2 e. RR ) -> ( ( N / 3 ) + 2 ) e. RR ) |
|
| 315 | 313 7 314 | sylancl | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> ( ( N / 3 ) + 2 ) e. RR ) |
| 316 | ppiwordi | |- ( ( N e. RR /\ 3 e. RR /\ N <_ 3 ) -> ( ppi ` N ) <_ ( ppi ` 3 ) ) |
|
| 317 | 1 316 | mp3an2 | |- ( ( N e. RR /\ N <_ 3 ) -> ( ppi ` N ) <_ ( ppi ` 3 ) ) |
| 318 | 317 | adantlr | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> ( ppi ` N ) <_ ( ppi ` 3 ) ) |
| 319 | 318 24 | breqtrdi | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> ( ppi ` N ) <_ 2 ) |
| 320 | 3pos | |- 0 < 3 |
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| 321 | divge0 | |- ( ( ( N e. RR /\ 0 <_ N ) /\ ( 3 e. RR /\ 0 < 3 ) ) -> 0 <_ ( N / 3 ) ) |
|
| 322 | 1 320 321 | mpanr12 | |- ( ( N e. RR /\ 0 <_ N ) -> 0 <_ ( N / 3 ) ) |
| 323 | 322 | adantr | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> 0 <_ ( N / 3 ) ) |
| 324 | addge02 | |- ( ( 2 e. RR /\ ( N / 3 ) e. RR ) -> ( 0 <_ ( N / 3 ) <-> 2 <_ ( ( N / 3 ) + 2 ) ) ) |
|
| 325 | 7 313 324 | sylancr | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> ( 0 <_ ( N / 3 ) <-> 2 <_ ( ( N / 3 ) + 2 ) ) ) |
| 326 | 323 325 | mpbid | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> 2 <_ ( ( N / 3 ) + 2 ) ) |
| 327 | 311 312 315 319 326 | letrd | |- ( ( ( N e. RR /\ 0 <_ N ) /\ N <_ 3 ) -> ( ppi ` N ) <_ ( ( N / 3 ) + 2 ) ) |
| 328 | 2 3 310 327 | lecasei | |- ( ( N e. RR /\ 0 <_ N ) -> ( ppi ` N ) <_ ( ( N / 3 ) + 2 ) ) |