Ruixue Zhang

activity

20162026

collaborators

5 papers

math.CO2026

A Recursive Characterization of Laplacian Spectral Radii of Trees with Bounded Maximum Degree

Fengming Dong, Ruixue Zhang

For a positive integer $r$ and a real number $α \geq 2$ , let $L_{r} (α)$ be the set of positive real numbers containing $α - 1$ and closed under the following operation: if $q_1,…

stat.ME2025

Causal inference in connected populations with contagion

Subhankar Bhadra, Michael Schweinberger

We address a gap in the literature on causal inference in connected populations: while there is a growing body of work on estimating causal effects in connected populations, little…

math.CO2023

On the colorability of bi-hypergraphs

Meiqiao Zhang, Fengming Dong, Ruixue Zhang

A {\it mixed hypergraph} $H = (V, C, D)$ consists of the vertex set $V$ and two families of subsets of $2^{V}$ : the family $C$ of co-edge…

math.CO2018

Zero-free intervals of chromatic polynomials of mixed hypergraphs

Ruixue Zhang, Fengming Dong

In this paper, we prove that $(- \infty, 0)$ is a zero-free interval for chromatic polynomials of a family $L_{0}$ of hypergraphs and $(0, 1)$ is a zero-free interval for chrom…

math.CO2016

Properties of chromatic polynomials of hypergraphs not held for chromatic polynomials of graphs

Ruixue Zhang, Fengming Dong

In this paper, we present some properties on chromatic polynomials of hypergraphs which do not hold for chromatic polynomials of graphs. We first show that chromatic polynomials of…