Internally-disjoint Pendant Steiner Trees in Digraphs

Shanshan Yu, Yuefang Sun

For a digraph $D=(V(D),A(D))$ and a set $S\subseteq V(D)$ with $|S|\ge 2$ and $r\in S$, a directed pendant $(S,r)$-Steiner tree (or, simply, a pendant $(S,r)$-tree) is an out-tree…