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math.CO2012
On the Main Signless Laplacian Eigenvalues of a Graph
Hanyuan Deng, He Huang
A signless Laplacian eigenvalue of a graph is called a main signless Laplacian eigenvalue if it has an eigenvector the sum of whose entries is not equal to zero. In this paper,…
math.CO2012
Bicyclic graphs with exactly two main signless Laplacian eigenvalues
He Huang, Hanyuan Deng
A signless Laplacian eigenvalue of a graph is called a main signless Laplacian eigenvalue if it has an eigenvector the sum of whose entries is not equal to zero. In this paper,…