Definition

In a Directed Graph, an outgoing edge from a node is an edge of the form for some node .

The node is called the source or tail of the edge, and is called the target or head.

  • Incoming Edge: The dual concept, edges of the form pointing to .
  • Degree: The out-degree of a node is the number of outgoing edges.
  • Path: Paths in directed graphs follow outgoing edges.