
<pre>
vertex_descriptor
source(edge_descriptor e, const adjacency_matrix&amp; g)
</pre>
Returns the source vertex of edge <tt>e</tt>.<br>
(Required by <a href="IncidenceGraph.html">IncidenceGraph</a>.)

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<pre>
vertex_descriptor
target(edge_descriptor e, const adjacency_matrix&amp; g)
</pre>
Returns the target vertex of edge <tt>e</tt>.<br>
(Required by <a href="IncidenceGraph.html">IncidenceGraph</a>.)

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<pre>
degree_size_type
out_degree(vertex_descriptor u, const adjacency_matrix&amp; g)
</pre>
Re