Yuefeng Yang

collaborators

3 papers

math.CO2025

Regular sets in Cayley sum graphs on generalized dicyclic groups

Meiqi Peng, Yuefeng Yang

For a graph $Γ = (V (Γ), E (Γ))$ , a subset $C$ of $V (Γ)$ is called an $(α, β)$ -regular set in $Γ$ , if every vertex of $C$ is adjacent to exactly $α$ vertices of $C$ and every vertex of $…

math.CO2025

Perfect codes in quartic Cayley graphs of generalized dihedral groups

Chengcheng Dong, Yuefeng Yang, Changchang Dong

For a graph $Γ = (V Γ, E Γ)$ , a subset $D$ of $V Γ$ is a perfect code in $Γ$ if every vertex of $Γ$ is dominated by exactly one vertex in $D$ . In this paper, we classify all connected qu…

math.CO2024

(Total) Perfect codes in (extended) subgroup sum graphs

Xuanlong Ma, Yuefeng Yang, Liangliang Zhai

Given a finite group $G$ with identity $e$ and a normal subgroup $H$ of $G$ , the subgroup sum graph $Γ_{G, H}$ (resp. extended subgroup sum graph $Γ_{G, H}^{+}$ ) of $G$ with respect to…