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Robin Clark 2010-08-17 15:37:43 +01:00
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eulerg/eulerg.tex
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@ -149,10 +149,12 @@ The diagram in figure \ref{fig:eulerg_enc} can now be represented as a graph thu
\pagebreak[0]
\section{The {\pic}}
In graph theory a node is said to be reachable from another node
if you can start at the one node, travel via the edges
and arrive at the other.
Contours may be connected via `pure intersection' relationships to form
`chains' of contours reachable by pure intersection.
These are termed {\pic}s.
Figure \ref{fig:eulerg_pic} shows a {\pic} consisting of contours $M,N,O,P$ and $Q$.
\begin{figure}[h]