Head

In graph theory, the head ^[1] of a directed edge $(u,v)$ is its second vertex $v$, the vertex the edge points toward; the other endpoint, $u$, is called the edge’s tail.

Definition

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Definition 1 (Head)

Let $(u,v)$ be a directed edge. The vertex $v$ is called the head of the edge.

References

1. [1]

   “Directed graph”, Wikipedia, Available: https://en.wikipedia.org/wiki/Directed_graph, Accessed: 2026-07-14 ↩