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12 lines
612 B
TeX
12 lines
612 B
TeX
\begin{tikzpicture}
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\tikzstyle{point}=[circle,thick,draw=black,fill=black,inner sep=0pt,minimum width=4pt,minimum height=4pt]
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\node (a)[point,label={[label distance=0cm]210:$a$}] at (210:1cm) {};
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\node (b)[point,label={[label distance=0cm]-45:$b$}] at (330:1cm) {};
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\node (c)[point,label={[label distance=0cm]90:$c$}] at (90:1cm) {};
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\node (sigma) at (0,0) {$\sigma$};
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\draw[->, very thick] (a) edge node[label=below:$e_3$] {} (b);
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\draw[->, very thick] (b) edge node[label=right:$e_1$] {} (c);
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\draw[->, very thick] (a) edge node[label=left:$e_2$] {} (c);
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\end{tikzpicture}
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