Guanglong Yu

activity

20132023

Q

-index for outer-planar graphs

2 citations · 3 across the 23 of their papers we have counts for

collaborators

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3 papers · 1 filter

math.CO2013

A lower bound of the least signless Laplacian eigenvalue of a graph

Shu-Guang Guo, Yong-Gao Chen, Guanglong Yu

Let $G$ be a simple connected graph on $n$ vertices and $m$ edges. In [Linear Algebra Appl. 435 (2011) 2570-2584], Lima et al. posed the following conjecture on the least eigenvalu…

math.CO2013

Distance spectral radius of a tree with given diameter

Guanglong Yu, Shuguang Guo, Mingqing Zhai

For a connected graph, the distance spectral radius is the largest eigenvalue of its distance matrix. In this paper, of all trees with both given order and fixed diameter, the tree…

math.CO2013

The domination number and the least $Q$ -eigenvalue

Guanglong Yu, Shu-Guang Guo, Rong Zhang +1

A vertex set $D$ of a graph $G$ is said to be a dominating set if every vertex of $V (G) ∖ D$ is adjacent to at least a vertex in $D$ , and the domination number $γ (G)$ ( $γ$ ,…

A lower bound of the least signless Laplacian eigenvalue of a graph

Distance spectral radius of a tree with given diameter

The domination number and the least Q-eigenvalue

The domination number and the least $Q$ -eigenvalue