Basic Inspection

Basic Inspection Functions

• NV(G): the number of vertices.
• NE(G): the number of edges.
• vlist(G): list containing the vertices.
• elist(G): list containing the edges.

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• has(G,v): is v a vertex of G?
• has(G,v,w): is (v,w) an edge of G?

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• neighbors(G,v): list of v's neighbors. Also G[v].
• deg(G,v): degree of vertex v.
• deg(G): sorted list of vertex degrees.

See also deg_hist.