82 citations · 249 across the 27 of their papers we have counts for
5 papers · 1 filter
A note on skew spectrum of graphs
Yanna Wang, Bo Zhou
We give some properties of skew spectrum of a graph, especially, we answer negatively a problem concerning the skew characteristic polynomial and matching polynomial in [M. Cavers…
Laplacian and signless Laplacian spectral radii of graphs with fixed domination number
Rundan Xing, Bo Zhou
In this paper, we determine the maximal Laplacian and signless Laplacian spectral radii for graphs with fixed number of vertices and domination number, and characterize the extrema…
Bounds for the spectral radius of nonnegative matrices
Rundan Xing, Bo Zhou
We give upper and lower bounds for the spectral radius of a nonnegative matrix by using its average 2-row sums, and characterize the equality cases if the matrix is irreducible. We…
On spectral radius of strongly connected digraphs
Jianping Li, Bo Zhou
We determine the digraphs which achieve the second, the third and the fourth minimum spectral radii respectively among strongly connected digraphs of order , and thus we an…
The Kirchhoff indices and the matching numbers of unicyclic graphs
Xuli Qi, Bo Zhou, Zhibin Du
The Kirchhoff index of a connected graph is the sum of resistance distances between all unordered pairs of vertices in the graph. It found considerable applications in a variety of…