A. Liu

activity

20182022

most citedThe signless Laplacian spectral radius of graphs without intersecting odd cycles

5 citations · 9 across the 8 of their papers we have counts for

collaborators

Showing 2021Show all

3 papers · 1 filter

math.CO2021★ 5 cited

The signless Laplacian spectral radius of graphs without intersecting odd cycles

Ming-Zhu Chen, A-Ming Liu, Xiao-Dong Zhang

Let $F_{a_{1}, \dots, a_{k}}$ be a graph consisting of $k$ cycles of odd length $2 a_{1} + 1, \dots, 2 a_{k} + 1$ , respectively which intersect in exactly a common vertex, where $k \geq 1$ and $a_1\g…

math.CO2021

On the spectral radius of graphs without a star forest

Ming-Zhu Chen, A-Ming Liu, Xiao-Dong Zhang

In this paper, we present two sharp upper bounds for the spectral radius of (bipartite) graphs with forbidden a star forest and characterize all extremal graphs. Moreover, the mini…

math.GR2021

A $G$ -covering subgroup system of a finite group for some classes of $σ$ -soluble groups

A-Ming Liu, W. Guo, Inna N. Safonova +1

Let $F$ be a class of group and $G$ a finite group. Then a set $Σ$ of subgroups of $G$ is called a \emph{ $G$ -covering subgroup system} for the class $F$ if $G\in {\…

The signless Laplacian spectral radius of graphs without intersecting odd cycles

On the spectral radius of graphs without a star forest

A G-covering subgroup system of a finite group for some classes of σ-soluble groups

A $G$ -covering subgroup system of a finite group for some classes of $σ$ -soluble groups