Yaojun Chen

activity

20232026

collaborators

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2 papers · 1 filter

math.CO2023

Ramsey goodness of fans

Yanbo Zhang, Yaojun Chen

Given two graphs $G_{1}$ and $G_{2}$ , the Ramsey number $r (G_{1}, G_{2})$ refers to the smallest positive integer $N$ such that any graph $G$ with $N$ vertices contains $G_{1}$ as a subgraph,…

math.CO2023

Maximum cliques in a graph without disjoint given subgraph

Fangfang Zhang, Yaojun Chen, Ervin Gyori +1

The generalized Turán number $\ex(n,K_s,F)$ denotes the maximum number of copies of $K_{s}$ in an $n$ -vertex $F$ -free graph. Let $k F$ denote $k$ disjoint copies of $F$ . Gerbner, Meth…