On the least signless Laplacian eigenvalues of some graphs

Guanglong Yu, Shuguang Guo, Meiling Xu
2013 The Electronic Journal of Linear Algebra  
For a graph, the least signless Laplacian eigenvalue is the least eigenvalue of its signless Laplacian matrix. This paper investigates how the least signless Laplacian eigenvalue of a graph changes under some perturbations, and minimizes the least signless Laplacian eigenvalue among all the nonbipartite graphs with given matching number and edge cover number, respectively.
doi:10.13001/1081-3810.1671 fatcat:eyiwsyym6fgp3kv3dxg53ifgxu