This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Description: Show the stronger statement log ( x ! ) = x log x - x + O ( log x ) alluded to in logfacrlim . (Contributed by Mario Carneiro, 20-May-2016)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | logfacbnd3 | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) ≤ ( ( log ‘ 𝐴 ) + 1 ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 𝐴 ∈ ℝ+ ) | |
| 2 | 1 | rprege0d | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( 𝐴 ∈ ℝ ∧ 0 ≤ 𝐴 ) ) |
| 3 | flge0nn0 | ⊢ ( ( 𝐴 ∈ ℝ ∧ 0 ≤ 𝐴 ) → ( ⌊ ‘ 𝐴 ) ∈ ℕ0 ) | |
| 4 | 2 3 | syl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ⌊ ‘ 𝐴 ) ∈ ℕ0 ) |
| 5 | 4 | faccld | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ∈ ℕ ) |
| 6 | 5 | nnrpd | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ∈ ℝ+ ) |
| 7 | relogcl | ⊢ ( ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ∈ ℝ+ → ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) ∈ ℝ ) | |
| 8 | 6 7 | syl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) ∈ ℝ ) |
| 9 | rpre | ⊢ ( 𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ ) | |
| 10 | 9 | adantr | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 𝐴 ∈ ℝ ) |
| 11 | relogcl | ⊢ ( 𝐴 ∈ ℝ+ → ( log ‘ 𝐴 ) ∈ ℝ ) | |
| 12 | 11 | adantr | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( log ‘ 𝐴 ) ∈ ℝ ) |
| 13 | peano2rem | ⊢ ( ( log ‘ 𝐴 ) ∈ ℝ → ( ( log ‘ 𝐴 ) − 1 ) ∈ ℝ ) | |
| 14 | 12 13 | syl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( log ‘ 𝐴 ) − 1 ) ∈ ℝ ) |
| 15 | 10 14 | remulcld | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ∈ ℝ ) |
| 16 | 8 15 | resubcld | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ∈ ℝ ) |
| 17 | 16 | recnd | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ∈ ℂ ) |
| 18 | 17 | abscld | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) ∈ ℝ ) |
| 19 | peano2rem | ⊢ ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) ∈ ℝ → ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − 1 ) ∈ ℝ ) | |
| 20 | 18 19 | syl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − 1 ) ∈ ℝ ) |
| 21 | ax-1cn | ⊢ 1 ∈ ℂ | |
| 22 | subcl | ⊢ ( ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ∈ ℂ ∧ 1 ∈ ℂ ) → ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ∈ ℂ ) | |
| 23 | 17 21 22 | sylancl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ∈ ℂ ) |
| 24 | 23 | abscld | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( abs ‘ ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ) ∈ ℝ ) |
| 25 | abs1 | ⊢ ( abs ‘ 1 ) = 1 | |
| 26 | 25 | oveq2i | ⊢ ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − ( abs ‘ 1 ) ) = ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − 1 ) |
| 27 | abs2dif | ⊢ ( ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ∈ ℂ ∧ 1 ∈ ℂ ) → ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − ( abs ‘ 1 ) ) ≤ ( abs ‘ ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ) ) | |
| 28 | 17 21 27 | sylancl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − ( abs ‘ 1 ) ) ≤ ( abs ‘ ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ) ) |
| 29 | 26 28 | eqbrtrrid | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − 1 ) ≤ ( abs ‘ ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ) ) |
| 30 | fveq2 | ⊢ ( 𝑥 = 𝐴 → ( ⌊ ‘ 𝑥 ) = ( ⌊ ‘ 𝐴 ) ) | |
| 31 | 30 | oveq2d | ⊢ ( 𝑥 = 𝐴 → ( 1 ... ( ⌊ ‘ 𝑥 ) ) = ( 1 ... ( ⌊ ‘ 𝐴 ) ) ) |
| 32 | 31 | sumeq1d | ⊢ ( 𝑥 = 𝐴 → Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) = Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝐴 ) ) ( log ‘ 𝑛 ) ) |
| 33 | id | ⊢ ( 𝑥 = 𝐴 → 𝑥 = 𝐴 ) | |
| 34 | fveq2 | ⊢ ( 𝑥 = 𝐴 → ( log ‘ 𝑥 ) = ( log ‘ 𝐴 ) ) | |
| 35 | 34 | oveq1d | ⊢ ( 𝑥 = 𝐴 → ( ( log ‘ 𝑥 ) − 1 ) = ( ( log ‘ 𝐴 ) − 1 ) ) |
| 36 | 33 35 | oveq12d | ⊢ ( 𝑥 = 𝐴 → ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) = ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) |
| 37 | 32 36 | oveq12d | ⊢ ( 𝑥 = 𝐴 → ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) = ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝐴 ) ) ( log ‘ 𝑛 ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) |
| 38 | eqid | ⊢ ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) = ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) | |
| 39 | ovex | ⊢ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ∈ V | |
| 40 | 37 38 39 | fvmpt3i | ⊢ ( 𝐴 ∈ ℝ+ → ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 𝐴 ) = ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝐴 ) ) ( log ‘ 𝑛 ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) |
| 41 | 40 | adantr | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 𝐴 ) = ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝐴 ) ) ( log ‘ 𝑛 ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) |
| 42 | logfac | ⊢ ( ( ⌊ ‘ 𝐴 ) ∈ ℕ0 → ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) = Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝐴 ) ) ( log ‘ 𝑛 ) ) | |
| 43 | 4 42 | syl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) = Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝐴 ) ) ( log ‘ 𝑛 ) ) |
| 44 | 43 | oveq1d | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) = ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝐴 ) ) ( log ‘ 𝑛 ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) |
| 45 | 41 44 | eqtr4d | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 𝐴 ) = ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) |
| 46 | 1rp | ⊢ 1 ∈ ℝ+ | |
| 47 | fveq2 | ⊢ ( 𝑥 = 1 → ( ⌊ ‘ 𝑥 ) = ( ⌊ ‘ 1 ) ) | |
| 48 | 1z | ⊢ 1 ∈ ℤ | |
| 49 | flid | ⊢ ( 1 ∈ ℤ → ( ⌊ ‘ 1 ) = 1 ) | |
| 50 | 48 49 | ax-mp | ⊢ ( ⌊ ‘ 1 ) = 1 |
| 51 | 47 50 | eqtrdi | ⊢ ( 𝑥 = 1 → ( ⌊ ‘ 𝑥 ) = 1 ) |
| 52 | 51 | oveq2d | ⊢ ( 𝑥 = 1 → ( 1 ... ( ⌊ ‘ 𝑥 ) ) = ( 1 ... 1 ) ) |
| 53 | 52 | sumeq1d | ⊢ ( 𝑥 = 1 → Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) = Σ 𝑛 ∈ ( 1 ... 1 ) ( log ‘ 𝑛 ) ) |
| 54 | 0cn | ⊢ 0 ∈ ℂ | |
| 55 | fveq2 | ⊢ ( 𝑛 = 1 → ( log ‘ 𝑛 ) = ( log ‘ 1 ) ) | |
| 56 | log1 | ⊢ ( log ‘ 1 ) = 0 | |
| 57 | 55 56 | eqtrdi | ⊢ ( 𝑛 = 1 → ( log ‘ 𝑛 ) = 0 ) |
| 58 | 57 | fsum1 | ⊢ ( ( 1 ∈ ℤ ∧ 0 ∈ ℂ ) → Σ 𝑛 ∈ ( 1 ... 1 ) ( log ‘ 𝑛 ) = 0 ) |
| 59 | 48 54 58 | mp2an | ⊢ Σ 𝑛 ∈ ( 1 ... 1 ) ( log ‘ 𝑛 ) = 0 |
| 60 | 53 59 | eqtrdi | ⊢ ( 𝑥 = 1 → Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) = 0 ) |
| 61 | id | ⊢ ( 𝑥 = 1 → 𝑥 = 1 ) | |
| 62 | fveq2 | ⊢ ( 𝑥 = 1 → ( log ‘ 𝑥 ) = ( log ‘ 1 ) ) | |
| 63 | 62 56 | eqtrdi | ⊢ ( 𝑥 = 1 → ( log ‘ 𝑥 ) = 0 ) |
| 64 | 63 | oveq1d | ⊢ ( 𝑥 = 1 → ( ( log ‘ 𝑥 ) − 1 ) = ( 0 − 1 ) ) |
| 65 | 61 64 | oveq12d | ⊢ ( 𝑥 = 1 → ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) = ( 1 · ( 0 − 1 ) ) ) |
| 66 | 54 21 | subcli | ⊢ ( 0 − 1 ) ∈ ℂ |
| 67 | 66 | mullidi | ⊢ ( 1 · ( 0 − 1 ) ) = ( 0 − 1 ) |
| 68 | 65 67 | eqtrdi | ⊢ ( 𝑥 = 1 → ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) = ( 0 − 1 ) ) |
| 69 | 60 68 | oveq12d | ⊢ ( 𝑥 = 1 → ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) = ( 0 − ( 0 − 1 ) ) ) |
| 70 | nncan | ⊢ ( ( 0 ∈ ℂ ∧ 1 ∈ ℂ ) → ( 0 − ( 0 − 1 ) ) = 1 ) | |
| 71 | 54 21 70 | mp2an | ⊢ ( 0 − ( 0 − 1 ) ) = 1 |
| 72 | 69 71 | eqtrdi | ⊢ ( 𝑥 = 1 → ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) = 1 ) |
| 73 | 72 38 39 | fvmpt3i | ⊢ ( 1 ∈ ℝ+ → ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 1 ) = 1 ) |
| 74 | 46 73 | mp1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 1 ) = 1 ) |
| 75 | 45 74 | oveq12d | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 𝐴 ) − ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 1 ) ) = ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ) |
| 76 | 75 | fveq2d | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( abs ‘ ( ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 𝐴 ) − ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 1 ) ) ) = ( abs ‘ ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ) ) |
| 77 | ioorp | ⊢ ( 0 (,) +∞ ) = ℝ+ | |
| 78 | 77 | eqcomi | ⊢ ℝ+ = ( 0 (,) +∞ ) |
| 79 | nnuz | ⊢ ℕ = ( ℤ≥ ‘ 1 ) | |
| 80 | 48 | a1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 1 ∈ ℤ ) |
| 81 | 1re | ⊢ 1 ∈ ℝ | |
| 82 | 81 | a1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 1 ∈ ℝ ) |
| 83 | pnfxr | ⊢ +∞ ∈ ℝ* | |
| 84 | 83 | a1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → +∞ ∈ ℝ* ) |
| 85 | 1nn0 | ⊢ 1 ∈ ℕ0 | |
| 86 | 81 85 | nn0addge1i | ⊢ 1 ≤ ( 1 + 1 ) |
| 87 | 86 | a1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 1 ≤ ( 1 + 1 ) ) |
| 88 | 0red | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 0 ∈ ℝ ) | |
| 89 | rpre | ⊢ ( 𝑥 ∈ ℝ+ → 𝑥 ∈ ℝ ) | |
| 90 | 89 | adantl | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ 𝑥 ∈ ℝ+ ) → 𝑥 ∈ ℝ ) |
| 91 | relogcl | ⊢ ( 𝑥 ∈ ℝ+ → ( log ‘ 𝑥 ) ∈ ℝ ) | |
| 92 | 91 | adantl | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ 𝑥 ∈ ℝ+ ) → ( log ‘ 𝑥 ) ∈ ℝ ) |
| 93 | peano2rem | ⊢ ( ( log ‘ 𝑥 ) ∈ ℝ → ( ( log ‘ 𝑥 ) − 1 ) ∈ ℝ ) | |
| 94 | 92 93 | syl | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ 𝑥 ∈ ℝ+ ) → ( ( log ‘ 𝑥 ) − 1 ) ∈ ℝ ) |
| 95 | 90 94 | remulcld | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ 𝑥 ∈ ℝ+ ) → ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ∈ ℝ ) |
| 96 | nnrp | ⊢ ( 𝑥 ∈ ℕ → 𝑥 ∈ ℝ+ ) | |
| 97 | 96 92 | sylan2 | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ 𝑥 ∈ ℕ ) → ( log ‘ 𝑥 ) ∈ ℝ ) |
| 98 | advlog | ⊢ ( ℝ D ( 𝑥 ∈ ℝ+ ↦ ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) = ( 𝑥 ∈ ℝ+ ↦ ( log ‘ 𝑥 ) ) | |
| 99 | 98 | a1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ℝ D ( 𝑥 ∈ ℝ+ ↦ ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) = ( 𝑥 ∈ ℝ+ ↦ ( log ‘ 𝑥 ) ) ) |
| 100 | fveq2 | ⊢ ( 𝑥 = 𝑛 → ( log ‘ 𝑥 ) = ( log ‘ 𝑛 ) ) | |
| 101 | simp32 | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+ ) ∧ ( 1 ≤ 𝑥 ∧ 𝑥 ≤ 𝑛 ∧ 𝑛 ≤ +∞ ) ) → 𝑥 ≤ 𝑛 ) | |
| 102 | logleb | ⊢ ( ( 𝑥 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+ ) → ( 𝑥 ≤ 𝑛 ↔ ( log ‘ 𝑥 ) ≤ ( log ‘ 𝑛 ) ) ) | |
| 103 | 102 | 3ad2ant2 | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+ ) ∧ ( 1 ≤ 𝑥 ∧ 𝑥 ≤ 𝑛 ∧ 𝑛 ≤ +∞ ) ) → ( 𝑥 ≤ 𝑛 ↔ ( log ‘ 𝑥 ) ≤ ( log ‘ 𝑛 ) ) ) |
| 104 | 101 103 | mpbid | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+ ) ∧ ( 1 ≤ 𝑥 ∧ 𝑥 ≤ 𝑛 ∧ 𝑛 ≤ +∞ ) ) → ( log ‘ 𝑥 ) ≤ ( log ‘ 𝑛 ) ) |
| 105 | simprr | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥 ) ) → 1 ≤ 𝑥 ) | |
| 106 | simprl | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥 ) ) → 𝑥 ∈ ℝ+ ) | |
| 107 | logleb | ⊢ ( ( 1 ∈ ℝ+ ∧ 𝑥 ∈ ℝ+ ) → ( 1 ≤ 𝑥 ↔ ( log ‘ 1 ) ≤ ( log ‘ 𝑥 ) ) ) | |
| 108 | 46 106 107 | sylancr | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥 ) ) → ( 1 ≤ 𝑥 ↔ ( log ‘ 1 ) ≤ ( log ‘ 𝑥 ) ) ) |
| 109 | 105 108 | mpbid | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥 ) ) → ( log ‘ 1 ) ≤ ( log ‘ 𝑥 ) ) |
| 110 | 56 109 | eqbrtrrid | ⊢ ( ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) ∧ ( 𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥 ) ) → 0 ≤ ( log ‘ 𝑥 ) ) |
| 111 | 46 | a1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 1 ∈ ℝ+ ) |
| 112 | 1le1 | ⊢ 1 ≤ 1 | |
| 113 | 112 | a1i | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 1 ≤ 1 ) |
| 114 | simpr | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 1 ≤ 𝐴 ) | |
| 115 | 10 | rexrd | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 𝐴 ∈ ℝ* ) |
| 116 | pnfge | ⊢ ( 𝐴 ∈ ℝ* → 𝐴 ≤ +∞ ) | |
| 117 | 115 116 | syl | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → 𝐴 ≤ +∞ ) |
| 118 | 78 79 80 82 84 87 88 95 92 97 99 100 104 38 110 111 1 113 114 117 34 | dvfsum2 | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( abs ‘ ( ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 𝐴 ) − ( ( 𝑥 ∈ ℝ+ ↦ ( Σ 𝑛 ∈ ( 1 ... ( ⌊ ‘ 𝑥 ) ) ( log ‘ 𝑛 ) − ( 𝑥 · ( ( log ‘ 𝑥 ) − 1 ) ) ) ) ‘ 1 ) ) ) ≤ ( log ‘ 𝐴 ) ) |
| 119 | 76 118 | eqbrtrrd | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( abs ‘ ( ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) − 1 ) ) ≤ ( log ‘ 𝐴 ) ) |
| 120 | 20 24 12 29 119 | letrd | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − 1 ) ≤ ( log ‘ 𝐴 ) ) |
| 121 | 18 82 12 | lesubaddd | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( ( ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) − 1 ) ≤ ( log ‘ 𝐴 ) ↔ ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) ≤ ( ( log ‘ 𝐴 ) + 1 ) ) ) |
| 122 | 120 121 | mpbid | ⊢ ( ( 𝐴 ∈ ℝ+ ∧ 1 ≤ 𝐴 ) → ( abs ‘ ( ( log ‘ ( ! ‘ ( ⌊ ‘ 𝐴 ) ) ) − ( 𝐴 · ( ( log ‘ 𝐴 ) − 1 ) ) ) ) ≤ ( ( log ‘ 𝐴 ) + 1 ) ) |