Adjacent Two vertices are adjacent if they are connected by an edge . We often call these two vertices neighbors . In a rooted tree, a vertex on the path from the root to the vertex. Vertex v is an ancestor of vertex w if and only if w is a descendant of v. A directed edge of a digraph.
Some authors use it as a synonym for an edge of a graph.
Other synonyms for arc in a digraph are arrow, directed line, directed edge, and directed link. A representation of a digraph using the arcs of the digraph. Can be an unordered listing of the ordered pairs, or a pair of ordered lists with the starting vertex in one list and the ending vertex in the corresponding position of the second list. A graph is bipartite if the vertices can be partitioned into two sets, X and Y, so that the only edges of the graph are between the vertices in X and the vertices in Y. Trees are examples of bipartite graphs. An assignment of symbols or other meanings to a set of bitstrings.