\begin{tikzpicture}[tqft/flow=east] \draw (0,0) circle (2cm); \draw (0,0) ellipse (2cm and 0.35cm); \draw[white,fill=white] (0,0.1) ellipse (1.95cm and 0.35cm); \draw[dashed] (0,0) ellipse (2cm and 0.35cm); \begin{scope}[rotate=45] \draw (0.5,1.2) ellipse (0.5cm and 0.4cm); \end{scope} \node at (2.38,0) {$\stackrel{\sim}{=}$}; \draw (3.8,0) circle (1cm); \end{tikzpicture}