| 双圈图的Laplace spread |
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| 引用本文： | 李平,施劲松,李瑞林.双圈图的Laplace spread[J].华东师范大学学报(自然科学版),2010,2010(1):6-9. |
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| 作者姓名： | 李平 施劲松 李瑞林 |
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| 作者单位： | 华东理工大学数学系,上海,200237 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 图的Laplace spread定义为图的最大Laplace特征值与次小Laplace特征值之差.利用多项式函数的性质,得到了具有最大Laplace spread的双圈图.
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| 关 键 词： | Laplace 特征值 双圈图 Laplace spread Laplace 特征值 双圈图 Laplace spread |
| 收稿时间： | 2009-7-3 |
| 修稿时间： | 2009-9-30 |
Laplacian spread of bicyclic graphs |
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| LI Ping,SHI Jin-song,LI Rui-lin.Laplacian spread of bicyclic graphs[J].Journal of East China Normal University(Natural Science),2010,2010(1):6-9. |
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| Authors: | LI Ping SHI Jin-song LI Rui-lin |
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| Institution: | Department of Mathematics, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | The Laplacian spread of a graph is defined to be the difference between the largest and the second-smallest Laplacian eigenvalues of the graph. Using properties of polynomial, we characterized the graphs with the maximal Laplacian spread among all bicyclic graphs. |
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| Keywords: | Laplacian eigenvalue bicyclic graph Laplacian spread |
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