The F26AGraph() command constructs the F26A graph.

The F26A graph is a symmetric bipartite cubic graph with 26 vertices and 39 edges.

It is the only cubic symmetric graph on 26 vertices.

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

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

$F≔\mathrm{F26AGraph}\left(\right)$

$F≔\mathrm{Graph\; 1:\; an\; undirected\; graph\; with\; 26\; vertices\; and\; 39\; edges}$

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

$2$

$\mathrm{DrawGraph}\left(F\right)$

"F26A graph", Wikipedia. http://en.wikipedia.org/wiki/F26A_graph

The GraphTheory[SpecialGraphs][F26AGraph] command was introduced in Maple 2025.

For more information on Maple 2025 changes, see Updates in Maple 2025.