| http://www.w3.org/ns/prov#value | - Graphs are one of the objects of study in discrete mathematics.<br />In the most common sense of the term, a graph is an ordered pair G = (V, E) comprising a set V of vertices or nodes together with a set E of edges or lines, which are 2-element subsets of V (i.e., an edge is related with two vertices, and the relation is represented as unordered pair of the vertices with respect to the particular
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