| LARGEST EIGENVALUE OF A UNICYCLIC MIXED GRAPH |
| |
| 作者姓名： | FanYizheng |
| |
| 作者单位： | Dept.ofMath.,NanjingNormalUniv.,Jiangsu210097,China |
| |
| 基金项目： | Supported by the project item for young teachers of colleges and universities of Anhui province( 2 0 0 3jq1 0 1 ) and the project item of Anhui University for talents group construction |
| |
| 摘 要： | The graphs which maximize and minimize respectively the largest eigenvalue over all unicyclic mixed graphs U on n vertices are determined. The unicyclic mixed graphs U with the largest eigenvalue λ1 (U)=n or λ1 (U)∈ (n ,n 1] are characterized.
|
| 关 键 词： | 特征值 单循环 图表 最值问题 |
| 收稿时间： | 24 March 2003 |
Largest eigenvalue of a unicyclic mixed graph |
| |
| FanYizheng.LARGEST EIGENVALUE OF A UNICYCLIC MIXED GRAPH[J].Applied Mathematics A Journal of Chinese Universities,2004,19(2):140-148. |
| |
| Authors: | Fan Yizheng |
| |
| Institution: | (1) Dept. of Math., Nanjing Normal Univ., 210097 Jiangsu, China;(2) Dept. of Math., Anhui Univ., 230039 Anhui, China |
| |
| Abstract: | The graphs which maximize and minimize respectively the largest eigenvalue over all unicyclic mixed graphs U on n vertices are determined. The unicyclic mixed graphs U with the largest eigenvalue λ1(U)=n or λ1(U)ε(n,n+1) are characterized.
Supported by the project item for young teachers of colleges and universities of Anhui province (2003jq101) and the project
item of Anhui University for talents group construction. |
| |
| Keywords: | mixed graph unicyclic graph Laplacian eigenvalue |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ |
