摘要
证明了对每点至多关联2个3-面的平面图,全染色猜想成立.对每点至多关联2个3-面且Δ(G)≥8的平面图,有xT(G)=Δ(G)+1.对每点至多关联(Δ(G)/2)个3-面且Δ(G)≥9的平面图,有xT(G)=Δ(G)+1.
It is proved that for a planar graph G which every vertex is incident with at most two 3-faces, the total coloring conjecture is true. Moreover, the total chromatic number of G is △(G) + 1 if △(G) ≥8. The total chromatic number of a planar graph G is A(G) + 1 if △(G) ≥9 and every vertex is incident with at most △"( G)/2"3-faces.
出处
《山东大学学报(理学版)》
CAS
CSCD
北大核心
2007年第5期14-18,共5页
Journal of Shandong University(Natural Science)
关键词
平面图
全染色
全染色数
planar graph
total coloring
total chromatic number