详细信息

直径为4的双星图的谱排序    

Ordering Tree with Diameter 4 by Their Spectrum

文献类型:期刊文献

中文题名:直径为4的双星图的谱排序

英文题名:Ordering Tree with Diameter 4 by Their Spectrum

作者:王娟[1];施劲松[1]

机构:[1]华东理工大学理学院,上海200237

年份:2009

卷号:30

期号:1

起止页码:84

中文期刊名:青岛科技大学学报(自然科学版)

外文期刊名:Journal of Qingdao University of Science and Technology:Natural Science Edition

收录:CSTPCD

基金:国家自然科学基金项目(10771069)

语种:中文

中文关键词:星图;树;谱;排序

外文关键词:star;tree;spectrum;ordering

摘要:介绍了一类直径为4的n阶树即双星图T(a,b)的谱随a变化的规律,其中a≥b≥1,a+b+3=n,n 2-3≤a≤n-4;得到了双星图T(a,b)的邻接谱半径、Laplace谱半径以及代数连通度均随a的值递增的结论,并在此基础上对这类树进行了排序。
The problem of ordring one kind of trees with diameter 4 which denoted as T(a,b) is introduced,where a≥b≥1,a+b+3=n,≤a≤n-4.The spectral radius and the Laplacian radius of T(a,b) are obatined.It deduced that the adjacent spectrum and Laplacian spectrum are strictly increasing functions of a respectively,the spectrum ordering is also produced.

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