The HallJankoGraph command creates the Hall-Janko graph.

The Hall-Janko graph is a 36-regular undirected graph with 100 vertices and 1800 edges.

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

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

$G≔\mathrm{HallJankoGraph}\left(\right)$

$G≔\mathrm{Graph\; 1:\; an\; undirected\; graph\; with\; 100\; vertices\; and\; 1800\; edge(s)}$

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

$\mathrm{true}$

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

$10$

The GraphTheory[SpecialGraphs][HallJankoGraph] command was introduced in Maple 2019.

For more information on Maple 2019 changes, see Updates in Maple 2019.