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