mirror of
https://github.com/MartinThoma/LaTeX-examples.git
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45 lines
1.5 KiB
TeX
45 lines
1.5 KiB
TeX
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\tikzset{
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point/.style={
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thick,
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draw=gray,
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cross out,
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inner sep=0pt,
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minimum width=4pt,
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minimum height=4pt,
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},
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}
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\begin{tikzpicture}
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\draw[->] (-0.5,0) -- (1.5,0) node [below] {$\mathbb{R}$};
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\foreach \x in {0,...,1}
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\draw (\x,0.1) -- (\x,-0.1) node [below] {\x};
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\draw[red] (0.07,0.1) -- (0,0.1) -- (0,-0.1) -- (0.07,-0.1) node [below] {};
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\draw[red] plot [smooth] coordinates{(0.47,0.1) (0.5,0) (0.47,-0.1)};
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\begin{scope}[shift={(4,0)}]
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\draw[thick] (0cm,0cm) circle(1cm);
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\draw[thick, red] ([shift={(180:1cm)}]-0.0,0) arc (180:0:1cm);
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\draw (0:1cm) node[point, label=right:{$0$}] {};
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%\path node[point, blue, label={[blue,above]{$\overline{a}$}}] (posU) at (-252:1cm) {};
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%\path node[label={[red,left]{$U$}}] at (30:1cm) {};
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\end{scope}
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\coordinate (circleUp) at (2.6, 0.1);
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\coordinate (circleDown) at (2.6,-0.1);
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\coordinate (numberlineUp) at (1.7, 0.1);
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\coordinate (numberlineDown) at (1.7,-0.1);
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\path[->] (numberlineUp) edge [bend left] node[label=$f$] {} (circleUp);
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\path[<-] (numberlineDown) edge [bend right] node[label=below:$g$] {} (circleDown);
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%\draw (3.7cm,0cm) node[point, blue, label={[blue,above]{$a$}}] (posA) {};
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%\draw (0.7cm,0cm) node[point, blue, label={[blue,above]{$\pi^{-1}(u)$}}] {};
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%\draw[dashed, blue, thick] plot [smooth] coordinates{(posU) (0.2,-0.8) (2.5,-1) (posA)};
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%\draw[blue, dashed, thick] (3.7cm,0cm) arc (0:180:1.5 and 0.5);
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\end{tikzpicture}
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