Yi Zhang

activity

20232025

collaborators

3 papers

math.CO2025

Vertex degree sums for rainbow matchings in 3-uniform hypergraphs

Haorui Liu, Mei Lu, Yan Wang +1

Let $n \in 3 Z$ be sufficiently large. Zhang, Zhao and Lu proved that if $H$ is a 3-uniform hypergraph with $n$ vertices and no isolated vertices, and if $deg(u)+deg(v) > \…

math.CO2024

Vertex degree sums for perfect matchings in 3-uniform hypergraphs

Yan Wang, Yi Zhang

Let $n \equiv 0 (mod 3)$ and $H_{n, n /3}^{2}$ be the 3-graph of order $n$ , whose vertex set is partitioned into two sets $S$ and $T$ of size $\frac{1}{3} n + 1$ and $\fra…

math.CO2023

The Existence of Hamilton Cycle in n-Balanced k-Partite Graphs

Zongyuan Yang, Yi Zhang, Shichang Zhao

Let $G_{k, n}$ be the $n$ -balanced $k$ -partite graph, whose vertex set can be partitioned into $k$ parts, each has $n$ vertices. In this paper, we prove that if $k \geq 2, n \geq 1$ ,…