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Figure 6:
Top side of the first level tubulating tetraflexagon cutout, characterized by the sign sequence (+ + - -). The cutout is small enough that both top and bottom for two sectors are shown, enough to make two separate flexagons.
![\begin{figure}
\centering
\begin{picture}
(320,360)
\put(0,0){\epsfxsize=320pt \epsffile{tubul.eps}}
\end{picture}
\end{figure}](img10.gif) |
Figure 7:
reverse side of the first level tubulating tetraflexagon cutout.
![\begin{figure}
\centering
\begin{picture}
(320,360)
\put(0,0){\epsfxsize=320pt \epsffile{tubul.eps}}
\end{picture}
\end{figure}](img10.gif) |
Microcomputadoras
2000-11-01