The non-neighbors of a vertex v are all the vertexSet of G that are not adjacent to v. That is, if u is a non-neighbor to v, {u,v} is not an edge in G.
i1 : G = graph({1,2,3,4},{{2,3},{3,4}}); |
i2 : nonneighbors(G,2) o2 = set {1, 4} o2 : Set |
The object nonneighbors is a method function.