Jiaxin Zheng

activity

20222026

collaborators

3 papers

math.CO2026

On a conjecture of Kolokolnikov on algebraic connectivity

Cheng Chi, Junjie Wang, Jiaxin Zheng

For a graph $G$ , let $α (G)$ be the second smallest eigenvalue of the Laplacian matrix of $G$ , also known as the algebraic connectivity. Algebraic connectivity plays an important ro…

math.CO2023

Spectral condition for the existence of a chorded cycle

Jiaxin Zheng, Xueyi Huang, Junjie Wang

A chord of a cycle $C$ is an edge joining two non-consecutive vertices of $C$ . A cycle $C$ in a graph $G$ is chorded if the vertex set of $C$ induces at least one chord. In this pa…

math.CO2022

Spectral radius conditions for fractional $[a, b]$ -covered graphs

Junjie Wang, Jiaxin Zheng, Yonglei Chen

A graph $G$ is called fractional $[a, b]$ -covered if for every edge $e$ of $G$ there is a fractional $[a, b]$ -factor with the indicator function $h$ such that $h (e) = 1$ . In this paper…

On a conjecture of Kolokolnikov on algebraic connectivity

Spectral condition for the existence of a chorded cycle

Spectral radius conditions for fractional [a,b]-covered graphs

Spectral radius conditions for fractional $[a, b]$ -covered graphs