21 lines
801 B
TeX
21 lines
801 B
TeX
\usetikzlibrary{decorations.pathreplacing}
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\usetikzlibrary{decorations.pathmorphing}
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\begin{tikzpicture}
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% draw axis
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\draw[thick, ->] (-0.5cm, 0cm) -- (5cm, 0cm) node[anchor=south] {$\Re \omega$};
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\draw[thick, ->] (0cm, -1cm) -- (0cm, 3cm) node[anchor=east] {$\Im \omega$};
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% draw branching cuts
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\filldraw[fill=black!30, draw=black, dashed] (0cm, 2pt) rectangle (4.8cm, -2pt);
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\filldraw[fill=black!10, draw=black, dashed] (1cm, 1pt) rectangle (4.8cm, -1pt);
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% draw branching points
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\filldraw[fill=white, draw=black] (4.8cm, 0cm) circle (2pt) node[anchor=north] (x1) {$\infty$};
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\filldraw[fill=white, draw=black] (1cm, 0cm) circle (2pt) node[anchor=north] (x2) {$1$};
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\filldraw[fill=white, draw=black] (0cm, 0cm) circle (2pt) node[anchor=north east] (x3) {$0$};
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\end{tikzpicture}
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% vim: ft=tex |