#### The Input/Output Complexity of Triangle Enumeration

##### Rasmus Pagh, Francesco Silvestri

We consider the well-known problem of enumerating all triangles of an undirected graph. Our focus is on determining the input/output (I/O) complexity of this problem. Let $E$ be the number of edges, $M 0$. Our results are based on a new color coding technique, which may be of independent interest.

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