讨论了Goldberg snark图的L(3,2,1)-标号问题,给出了Goldberg snark图Bk的L(3,2,1)-标号数的界,即11≤λ_(3,2,1)(B_k)≤16.
The L(3,2,1)-labeling problem of a graph Goldberg snark B_k is considered.The bounds for the L(3,2,1)-labeling number of Goldberg snark Bkare given by 11≤λ_(3,2,1)(B_k)≤16.