21 lines
807 B
TeX
21 lines
807 B
TeX
\begin{tikzpicture}
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% draw axis
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\draw[thick, ->] (-3cm, 0cm) node[anchor=north] {$0$} -- (2.5cm, 0cm) node[anchor=south] {$x$};
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\draw[thick, ->] (-2.75cm, -1cm) -- (-2.75cm, 3cm) node[anchor=east] {$y$};
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% draw branching cuts
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\filldraw[fill=black!30, draw=black, dashed] (-2cm, 2pt) rectangle (2.25cm, -2pt);
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\filldraw[fill=black!10, draw=black, dashed] (0.25cm, 1pt) rectangle (2.25cm, -1pt);
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% draw branching points
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\filldraw[fill=white, draw=black] (-2cm, 0cm) circle (2pt) node[anchor=north] {$x_{(t+1)}$};
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\filldraw[fill=white, draw=black] (0.25cm, 0cm) circle (2pt) node[anchor=north] {$x_{(t)}$};
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\filldraw[fill=white, draw=black] (2.25cm, 0cm) circle (2pt) node[anchor=north] {$x_{(t-1)}$};
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% draw closed loop
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\draw[dotted, ->] (1cm, 2pt) arc (0:350:0.75cm);
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\end{tikzpicture}
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% vim: ft=tex |