# Bipartite Graph Typo in “Modern Graph Theory” by Bollobas

I was going through Modern Graph Theory by Bollobas and this example on bipartite graph which states on the last line of page 6 that Figure I.1 is a bipartite graph.

Fig I.1 has triangles as subgraph and triangle is not bipartite. Given the subgraphs of Fig I.1 is not bipartite, then Fig I.1 itself cannot be bipartite. Am I missing something/misunderstand the example?

• The graph is tripartite (or $3$-partite), with vertex classes $\{1,3,5\}$, $\{2,4,6\}$, and $\{7,8,9\}$, so that's probably what Bollobas intended to write. – Andreas Blass Dec 5 '16 at 3:33