摘要
只含一个圈的简单连通图称为单圈图.郭继明给出了固定圈长的单圈图的Laplace谱半径并刻画了相应的极图.该文在此基础上确定了圈长为g的所有n=g+k(g≥5,k≥3)阶单圈图的Laplace谱半径从大到小的前[g/2]个图.
A unicyclic graph is either a cycle or a cycle with trees attached. GUO Jiming gave the first largest Laplacian spectral radius among all unicyclic graphs with cycle length g and n vertices. In this paper, the first largest [g/2]graphs is determined according to Laplacian spectral radii among all unicyclic graphs with cycle length g and n=g+k(g≥5,k≥3) vertices.
出处
《同济大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2009年第1期129-133,共5页
Journal of Tongji University:Natural Science
基金
国家自然科学基金资助项目(10871166)