福州大学学报（自然科学版）2018，Vol.46Issue(1)：8-11,4.DOI:10.7631/issn.1000-2243.16351
具有固定直径单圈图的Estrada指标
The Estrada index of unicyclic graphs with fixed diameter
摘要
Abstract
In view of the unique graph with maximum Estrada index among the odd unicyclic graphs with fixed diameter,make the range of it narrow.In this paper we show that △nd is the unique graph with maximum Estrada index among the odd unicyclic graphs with fixed diameter.Let △nd be the graph which is obtained from a triangle by attaching n-d-2 pendant edges and a path of length [d/2-] at one vertex of it,and a path of length [d/2]-1 to another vertex,respectively.关键词
Estrada指标/奇单圈图/固定直径Key words
Estrada index/odd unicyclic graph/diameter分类
数理科学引用本文复制引用
杨迎迎,常安..具有固定直径单圈图的Estrada指标[J].福州大学学报（自然科学版）,2018,46(1):8-11,4.基金项目
国家自然科学基金资助项目(11471077) （11471077）
