Yuefang Sun

collaborators

2 papers

math.CO2026

Internally-disjoint directed pendant Steiner trees with three terminal vertices in Cartesian product digraphs

Shanshan Yu, Yuefang Sun

Let $D = (V (D), A (D))$ be a digraph with a terminal vertex subset $S \subseteq V (D)$ such that $∣ S ∣ = k \geq 2$ . An out-tree $T$ of $D$ rooted at $r$ is called a directed pendant $(S, r)$ -…

math.CO2024

Degree conditions for disjoint path covers in digraphs

Ansong Ma, Yuefang Sun

In this paper, we study degree conditions for three types of disjoint directed path cover problems: many-to-many $k$ -DDPC, one-to-many $k$ -DDPC and one-to-one $k$ -DDPC, which are i…