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Diffstat (limited to 'buch/papers/zeta/images/primzahlfunktion2.tex')
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diff --git a/buch/papers/zeta/images/primzahlfunktion2.tex b/buch/papers/zeta/images/primzahlfunktion2.tex new file mode 100644 index 0000000..7425ce5 --- /dev/null +++ b/buch/papers/zeta/images/primzahlfunktion2.tex @@ -0,0 +1,63 @@ +% +% primzahlfunktion2.tex -- Primzahlfunktion, alternativer Vorschlag +% +% (c) 2021 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule +% +\documentclass[tikz]{standalone} +\usepackage{amsmath} +\usepackage{times} +\usepackage{txfonts} +\usepackage{pgfplots} +\usepackage{csvsimple} +\usetikzlibrary{arrows,intersections,math} +\begin{document} +\def\skala{1} +\begin{tikzpicture}[>=latex,thick,scale=\skala] + +\def\dx{0.38} +\def\dy{0.5} + +\foreach \x in {1,...,30}{ + \draw[color=gray!20] ({\x*\dx},0) -- ({\x*\dx},{10.5*\dy}); +} +\foreach \y in {1,...,10}{ + \draw[color=gray!20] (0,{\y*\dy}) -- ({30.5*\dx},{\y*\dy}); +} + +\draw[->] (-0.1,0) -- ({30.8*\dx},0) coordinate[label={$x$}]; +\draw[->] (0,-0.1) -- (0,{10.9*\dy}) coordinate[label={right:$\pi(x)$}]; + +\def\segment#1#2#3{ + %\draw[line width=0.1pt] ({#3*\dx},0) -- ({#3*\dx},{#2*\dy}); + \draw[color=blue,line width=1.4pt] + ({#1*\dx},{#2*\dy}) -- ({#3*\dx},{#2*\dy}); + \draw[color=blue,line width=0.3pt] + ({#3*\dx},{#2*\dy}) -- ({#3*\dx},{(#2+1)*\dy}); + \draw ({#3*\dx},-0.1) -- ({#3*\dx},0.1); + \node at ({(#3)*\dx},-0.1) [below] {$#3\mathstrut$}; +} + +\foreach \y in {2,4,...,10}{ + \draw (-0.1,{\y*\dy}) -- (0.1,{\y*\dy}); + \node at (-0.1,{\y*\dy}) [left] {$\y\mathstrut$}; +} + +\begin{scope} +\clip (0,-0.5) rectangle ({30*\dx},{10.1*\dy}); + +\segment{0}{0}{2} +\segment{2}{1}{3} +\segment{3}{2}{5} +\segment{5}{3}{7} +\segment{7}{4}{11} +\segment{11}{5}{13} +\segment{13}{6}{17} +\segment{17}{7}{19} +\segment{19}{8}{23} +\segment{23}{9}{29} +\segment{29}{10}{31} +\end{scope} + +\end{tikzpicture} +\end{document} + |