Yuefang Sun

activity

20092022

most citedThe generalized 3-connectivity of Cartesian product graphs

19 citations · 41 across the 20 of their papers we have counts for

collaborators

Showing 2020Show all

4 papers · 1 filter

math.CO2020

Extremal results for directed tree connectivity

Yuefang Sun

For a digraph $D = (V (D), A (D))$ , and a set $S \subseteq V (D)$ with $r \in S$ and $∣ S ∣ \geq 2$ , an $(S, r)$ -tree is an out-tree $T$ rooted at $r$ with $S \subseteq V (T)$ . Two $(S, r)$ -tr…

math.CO2020

Kings and Kernels in Semicomplete Compositions

Yuefang Sun, Zemin Jin

Let $k$ be an integer with $k \geq 2$ . A $k$ -king in a digraph $D$ is a vertex which can reach every other vertex by a directed path of length at most $k$ and a non-king is a vertex…

math.CO2020

Semicomplete Compositions of Digraphs

Yuefang Sun

Let $T$ be a digraph with vertices $u_{1}, \dots, u_{t}$ ( $t \geq 2$ ) and let $H_{1}, \dots, H_{t}$ be digraphs such that $H_{i}$ has vertices $u_{i, j_{i}}, 1 \leq j_{i} \leq n_{i} .$ Then the compositi…

math.CO2020

Directed Steiner tree packing and directed tree connectivity

Yuefang Sun, Anders Yeo