or undirected graph. The graph type must model <a
href="./BidirectionalGraph.html">Bidirectional Graph</a> and <a
href="./VertexListGraph.html">Vertex List Graph</a>.
</blockquote>

<h3>Named Parameters</h3>

OUT: <tt>isomorphism_map(IsoMap f)</tt>
<blockquote>
The mapping from vertices in graph 1 to vertices in graph 2. This must
be a <a href="../../property_map/doc/ReadWritePropertyMap.html">Read/Write
Property Map</a>.<br> <b>Default:</b> an <a
href="../../property_map/doc/iterator_property_map.html"><tt