torus.tex

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{center}
  \begin{tikzpicture}[scale=0.7]
    \begin{scope}
      \draw (-1,0) to[bend left=40] (1,0);
      \draw (-1.2,0.15) to[bend right=40] (1.2,0.15);
      \draw ( 3,0) to[bend left=40] (5,0);
      \draw ( 2.8,0.15) to[bend right=40] (5.2,0.15);
      \draw ( 7,0) to[bend left=40] (9,0);
      \draw ( 6.8,0.15) to[bend right=40] (9.2,0.15);
      \draw plot [smooth cycle, tension=0.7] coordinates {
        (- 2.2, 0  )
        (- 1.5, 1  )
        (  0  , 1.4)
        (  2  , 1.1)
        (  4  , 1.4)
        (  6  , 1.1)
        (  8  , 1.4)
        (  9.5, 1  )
        ( 10.2, 0  )
        (  9.5,-1  )
        (  8  ,-1.4)
        (  6  ,-1.1)
        (  4  ,-1.4)
        (  2  ,-1.1)
        (  0  ,-1.4)
        (- 1.5,-1  )
      };
    \end{scope}
    \node [rotate=30] at (  2, 0.6) {\scriptsize$\times$};
    \node [rotate=30] at (4.6, 0.76) {\scriptsize$\times$};
    \node [rotate=30] at (8.2, 0.9) {\scriptsize$\times$};
  \end{tikzpicture}
\end{center}
\begin{center}
  \begin{tikzpicture}
    \draw (-1,1) to[out=-45,in=0] (0,-2) to[out=180,in=-135] (1,1);
    \node [inner sep=1pt, fill=black, circle] at (0,-0.2922) {};
  \end{tikzpicture}
\end{center}
\end{document}