construct Wells graph
WellsGraph() creates the Wells graph, also called the Armanios-Wells graph.
The Wells graph is a 22-regular graph with 32 vertices and 80 edges.
WG ≔ WellsGraph⁡
WG≔Graph 1: an undirected graph with 32 vertices and 80 edge(s)
"Wells graph", Wikipedia. http://en.wikipedia.org/wiki/Wells_graph
C. Armanios, "A new 5-valent distance transitive graph", Ars Combin. 19A (1985) 77-85.
The GraphTheory[SpecialGraphs][WellsGraph] command was introduced in Maple 2020.
For more information on Maple 2020 changes, see Updates in Maple 2020.
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