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Finds the transitive, reflexive closure of a directed graph. Given a graph G=(V,E), its transitive closure is the graph: G* = (V,E*) where E*={(i,j): i,j in V and either i = j or there is a path from i to j in G}

Finds the reflexive closure of a directed graph. Given a graph G=(V,E), its transitive closure is the graph: G* = (V,Er union E) where Er = {(i,i): i in V}

Finds the transitive closure of a directed graph. Given a graph G=(V,E), its transitive closure is the graph: G* = (V,E*) where E*={(i,j): i,j in V and there is a path from i to j in G}