On the Brouwer-type Conjecture for Signless Laplacian Eigenvalues of Graphs

Ruisong Yuan, Xiao-Dong Zhang

Motivated by Brouwer's conjecture, Ashraf, Omidi and Tayfeh-Rezaie proposed the following Brouwer-type conjecture that for every graph $G$ on $n$ vertices with $m$ edges, the sum $…