22 lines
657 B
TeX
22 lines
657 B
TeX
\documentclass{standalone}
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\usepackage{tikz}
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\usetikzlibrary{automata,positioning}
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\begin{document}
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\begin{tikzpicture}[shorten >=1pt,node distance=3cm,on grid,>=stealth,
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every state/.style={draw=none}]
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\node[state] (T) {$T$};
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\node[state] (R1) [below left=of T] {$R_1$};
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\node[state] (R2) [below right=of T] {$R_2$};
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\node[state] (R) [below right=of R1] {$R$};
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\path [every node/.style={font=\footnotesize, below}]
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(T) edge[->>] node[near end] {$\beta$} (R1)
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edge[->>] node[near end] {$\beta$} (R2)
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(R1) edge[->>] node[near end] {$\beta$} (R)
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(R2) edge[->>] node[near end] {$\beta$} (R);
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\end{tikzpicture}
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\end{document}
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