morphism(const Graph1&amp; g1, const Graph2&amp; g2,
		 IsoMap f, VertexInvariant1 invariant2, VertexInvariant2 invariant2,
		 std::size_t max_invariant, VertexIndex1Map i1_map, VertexIndex2Map i2_map)
</pre>

<p>
An <b><i>isomorphism</i></b> is a 1-to-1 mapping of the vertices in
one graph to the vertices of another graph such that adjacency is
preserved. Another words, given graphs <i>G<sub>1</sub> =
(V<sub>1</sub>,E<sub>1</sub>)</i> and <i>G<sub>2</sub> =
(V<sub>2</sub>,E<sub>2</sub>)</i> an isomorphism 