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17 lines
564 B
17 lines
564 B
\begin{center}
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\begin{forest}
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for tree={circle, draw, no edge,
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minimum size=2em,
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inner sep=0pt,
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s sep=2mm,
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l sep=2mm}
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[$f$, rectangle, draw, tikz={\draw [line] () to (a.north);}
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[$a$, name=a, tikz={\draw [line] () to (c1.north east); \draw [dot=.5] () to (b1.north west);}
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[$c$, name=c1, tikz={\draw [line] () to (250:3); \draw [fulldot=.5] () to (265:3);}
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]
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[$b$, name=b1, tikz={\draw [line] () to (270:3); \draw [fulldot=.5] () to (285:3);}
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]
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]
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]
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\end{forest}
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\end{center}
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