Ming-Zhu Chen

activity

20172022

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

5 citations · 7 across the 8 of their papers we have counts for

collaborators

10 papers

math.CO2022

The signless Laplacian spectral radius of graphs without trees

Ming-Zhu Chen, Zhao-Ming Li, Xiao-Dong Zhang

Let $Q (G) = D (G) + A (G)$ be the signless Laplacian matrix of a simple graph of order $n$ , where $D (G)$ and $A (G)$ are the degree diagonal matrix and the adjacency matrix of $G$ , respec…

math.CO2022

Spectral extremal results on the $α$ -index of graphs without minors and star forests

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

Let $G$ be a graph of order $n$ , and let $A (G)$ and $D (G)$ be the adjacency matrix and the degree matrix of $G$ respectively. Define the convex linear combinations $A_{α} (G)$ of $A (…

math.CO2022

The bipartite Turan number and spectral extremum for linear forests

Ming-Zhu Chen, Ning Wang, Long-Tu Yuan +1

The bipartite Turán number of a graph $H$ , denoted by $e x (m, n; H)$ , is the maximum number of edges in any bipartite graph $G = (X, Y; E)$ with $∣ X ∣ = m$ and $∣ Y ∣ = n$ which does not conta…

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.CO2020

The signless Laplacian spectral radius of graphs with forbidding linear forests

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

Turán type extremal problem is how to maximize the number of edges over all graphs which do not contain fixed forbidden subgraphs. Similarly, spectral Turán type extremal problem i…

The signless Laplacian spectral radius of graphs without trees

Spectral extremal results on the α-index of graphs without minors and star forests

The bipartite Turan number and spectral extremum for linear forests

The signless Laplacian spectral radius of graphs without intersecting odd cycles

On the spectral radius of graphs without a star forest

The signless Laplacian spectral radius of graphs with forbidding linear forests

Spectral extremal results on the $α$ -index of graphs without minors and star forests