The higher-order analogue of a graph, for example, is called a hypergraph, and instead of edges, it has “hyperedges.” These can connect multiple nodes, which means it can represent multi-way ...

The study of such graphs is called graph theory. Engineers need to find planarity in a graph when, for example, they are designing a computer chip without a crossed wire.

Refining with colors Mathematicians have developed various strategies to compare graphs. Since the 1970s, algorithms have been able to test graph isomorphism, but in exponential time.

The SAS/GRAPH titles are displayed in the HTML output instead of in the graphics output. The Web page contains two frames, one that displays a Table of Contents for all the graphs, and one that serves ...

It also has direct and crucial implications for a branch of mathematics known as graph theory. These graphs consist of collections of points, or vertices, that may (or may not) be connected to each ...

Claude Berge, Two Theorems in Graph Theory, Proceedings of the National Academy of Sciences of the United States of America, Vol. 43, No. 9 (Sep. 15, 1957), pp. 842-844 ...