Berkas:Prime number theorem absolute error.svg

Ukuran asli (Berkas SVG, secara nominal 283 × 178 piksel, besar berkas: 94 KB)

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Ringkasan

Deskripsi
English: A log-log plot showing the absolute error of two estimates to the prime-counting function , given by and . The x axis is and is logarithmic (labelled in evenly spaced powers of 10), going up to 1024, the largest for which is currently known. The y axis is also logarithmic, going up to the absolute error of at 1024. The error of both functions appears to increase as a power of , with Li(x)'s power being smaller; both clearly diverge. The error of Li(x) appears to smooth out after 109 but this is an artifact due to less data availability for in the larger region. Source used to generate this chart is shown below.
Tanggal
Sumber Karya sendiri
Pembuat Dcoetzee
SVG genesis
InfoField
 
The SVG code is valid.
 
Gambar vektor ini dibuat menggunakan Mathematica
 
and with Inkscape.
 
 This trigonometry uses embedded text that can be easily translated using a text editor.
Kode sumber
InfoField

Mathematica code

base = N[][10]/600)];
diffs = Table[][base^x], 
    N[][][base^x] - (base^x/(x*Log[base]))]}, {x, 1, 
    Floor[][2, base]}];
diffsli = 
  Table[][base^x], 
    N[][][base^x] - (LogIntegral[base^x] - LogIntegral[2])]}, {x, 
    Ceiling[][base, 2], Floor[][2, base]}];
(* Supplement with larger known PrimePi values that are too large for \
Mathematica to compute *)
LargePiPrime = {{10^13, 346065536839}, {10^14, 3204941750802}, {10^15,
     29844570422669}, {10^16, 279238341033925}, {10^17, 
    2623557157654233}, {10^18, 24739954287740860}, {10^19, 
    234057667276344607}, {10^20, 2220819602560918840}, {10^21, 
    21127269486018731928}, {10^22, 201467286689315906290}, {10^23, 
    1925320391606803968923}, {10^24, 18435599767349200867866}};
diffs2 = Abs[][][][[1]], N[][[2]]] - (#[[1]]/(Log[][[1]]]))} &, 
     LargePiPrime]]];
diffsli2 = 
  Abs[][][][[1]], 
       N[][[2]]] - (LogIntegral[][[1]]] - LogIntegral[2])} &, 
     LargePiPrime]]];
(* Plot with log x axis, together with the horizontal line y=1 *)
Show[][1, {x, 1, 10^24}, PlotRange -> {1, 10^21}], 
 ListLogLogPlot[{diffs2, diffsli2}, Joined -> True, 
  PlotRange -> {1, 10^21}], LabelStyle -> FontSize -> 14]

LaTeX source for labels code

$$ {\pi(x)} - {\frac{x}{\ln x}} $$
$$ {\int_2^x \frac{1}{\ln t} \mathrm{d}t} - {\pi(x)} $$

Lisensi

Saya, pemilik hak cipta dari karya ini, dengan ini menerbitkan berkas ini di bawah ketentuan berikut:
Creative Commons CC-Zero Berkas ini dilepaskan di bawah CC0 1.0 Dedikasi Domain Publik Universal Creative Commons.
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Source

All source released under CC0 waiver.

Mathematica source to generate graph (which was then saved as SVG from Mathematica):


These were converted to SVG with [1] and then the graph was embedded into the resulting document in Inkscape. Axis fonts were also converted to Liberation Serif in Inkscape.

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menggambarkan

21 Maret 2013

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Tanggal/WaktuMiniaturDimensiPenggunaKomentar
terkini21 Maret 2013 14.47Miniatur versi sejak 21 Maret 2013 14.47283 × 178 (94 KB)Dcoetzee== {{int:filedesc}} == {{Information |Description ={{en|1=A log-log plot showing the absolute error of two estimates to the prime-counting function <math>\pi(x)</math>, given by <math>\frac{x}{\ln x}</math> and <math>\int_2^x \frac{1}{\ln t} \mathrm...

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