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DegreeCentrality returns the degree centrality for a specified vertex in the given graph G, or if no vertex is specified, returns a list of the degree centralities for each vertex in G.

The degree centrality of a vertex v is simply the normalized degree of v; that is, the degree of v divided by NumberOfVertices(G)-1.

$\mathrm{with}\left(\mathrm{GraphTheory}\right)\:$

$G≔\mathrm{Graph}\left(6\,\left\{\left\{1\,3\right\}\,\left\{1\,6\right\}\,\left\{2\,4\right\}\,\left\{2\,6\right\}\,\left\{3\,6\right\}\,\left\{4\,5\right\}\,\left\{4\,6\right\}\,\left\{5\,6\right\}\right\}\right)$

$G≔\mathrm{Graph\; 1:\; an\; undirected\; graph\; with\; 6\; vertices\; and\; 8\; edges}$

$\mathrm{DegreeSequence}\left(G\right)$

$\left[2\,2\,2\,3\,2\,5\right]$

$\mathrm{DegreeCentrality}\left(G\right)$

$\left[\frac{2}{5}\,\frac{2}{5}\,\frac{2}{5}\,\frac{3}{5}\,\frac{2}{5}\,1\right]$

The GraphTheory[DegreeCentrality] command was introduced in Maple 2020.

For more information on Maple 2020 changes, see Updates in Maple 2020 .