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- \tikzstyle{vertex}=[draw,black,circle,minimum size=10pt,inner sep=0pt]
- \tikzstyle{edge}=[very thick]
- \begin{tikzpicture}[scale=1,framed]
- \node (a)[vertex,label=$A$] at (0,0) {$v_1$};
- \node (b)[vertex,label={\color{blue}$A$}] at (1,0) {$v_2$};
- \draw[->] (b) -- (a);
- \node (struktur)[label={[label distance=-0.2cm]0:$t=2$}] at (-2,1) {};
- \end{tikzpicture}
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