WatkinsSnark - Maple Help

GraphTheory[SpecialGraphs]

 WatkinsSnark
 construct Watkins snark graph

 Calling Sequence WatkinsSnark() DoubleStarSnark()

Description

 • A snark is a nontrivial cubic graph with chromatic index 4.
 • The WatkinsSnark command creates a snark with 50 vertices.

Examples

 > $\mathrm{with}\left(\mathrm{GraphTheory}\right):$
 > $\mathrm{with}\left(\mathrm{SpecialGraphs}\right):$
 > $G≔\mathrm{WatkinsSnark}\left(\right)$
 ${G}{≔}{\mathrm{Graph 1: an undirected unweighted graph with 50 vertices and 75 edge\left(s\right)}}$ (1)
 > $\mathrm{DrawGraph}\left(G\right)$
 > $H≔\mathrm{DoubleStarSnark}\left(\right)$
 ${H}{≔}{\mathrm{Graph 2: an undirected unweighted graph with 30 vertices and 45 edge\left(s\right)}}$ (2)
 > $\mathrm{DrawGraph}\left(H\right)$

Compatibility

 • The GraphTheory[SpecialGraphs][WatkinsSnark] command was introduced in Maple 2021.
 • For more information on Maple 2021 changes, see Updates in Maple 2021.