文件: AT braid example.svg

\usepackage{braids}

\begin{tikzpicture}[xscale=1.5,yscale=.8]
    \draw[dashed, fill=gray!19] (3,0) ellipse (2.3 and .8);
    \draw[dashed, fill=gray!19] (3,-9.5) ellipse (2.3 and .8);
    \braid[very thick,
        style strands={1}{blue},
        style strands={2}{blue!70!red!50},
        style strands={3}{black},
        style strands={4}{orange},
        style strands={5}{green}]
        s_1 s_3 s_4 s_2^{-1} s_1 s_3 s_2^{-1} s_1 s_2^{-1};
    \foreach \j in {3,4,5,2,1}
    {\draw (\j,0)node[white]{$\bullet$}node[red]{$\circ$}
        (\j,-9.5)node[white]{$\bullet$}node[red]{$\circ$};}
\end{tikzpicture}