On the Laplacian coefficients of graphs under some transformations |
| |
Authors: | Shang-wang Tan Qi-long Wang |
| |
Institution: | College of Science, China University of Petroleum, Qingdao 266580, China |
| |
Abstract: | We generalize three approaches on graph transformations, respectively, from Stevanovi? and Ili? (2009) 16] and Tan (2011) 19]. We also generalize an approach of graph transformations on the spectral radius of adjacency matrix into the Laplacian coefficients of graphs from Li and Feng (1979) 26]. Moreover, we determine the unique tree having the third maximal Laplacian coefficients among all n-vertex trees. |
| |
Keywords: | 05C50 |
本文献已被 ScienceDirect 等数据库收录! |
|