摘要
图G的非正常边着色,即(m·d)一边着色是把边集E(G)划分成m个子集E1,E2,…,Em,使得每一边子集的导出子图G〔Ei〕,i=1,2,…,m的最大度最多是d。Woodal问:对奇数d和自然数m,最大度是md的第二类图中哪些是(md)一边可着色的?哪些不是?本文对Woodal的这一公开问题给出了一些明确的解答。
An improper edge-colouring of G,i.e.,(m,d)-edge-colouring of G,is a partition of its edges into m subsets,E1,E2,…,Em,each of which induces a subgraph with maximum degree at most d.Woodall asked:for each odd integer d and each m,which graphs of class two with maximum degree md are (m.d)-edge-colourable and which are not?This paper gives some explicit solutions to Woodall's problem known to the public.
出处
《山东矿业学院学报》
CAS
1997年第4期432-435,共4页
Journal of Shandong University of Science and Technology(Natural Science)