Bounding the sum of the largest signless Laplacian eigenvalues of a graph
Aida Abiad, Leonardo de Lima, Sina Kalantarzadeh, Mona Mohammadi·2022-10-07·via math.CO updates on arXiv.org
We show several sharp upper and lower bounds for the sum of the largest eigenvalues of the signless Laplacian matrix. These bounds improve and extend previously known bounds.