Covering a Strong Digraph by α−1 Disjoin
✍
Stéphan Thomassé
📂
Article
📅
2001
🏛
Elsevier Science
🌐
English
⚖ 83 KB
The Gallai Milgram theorem states that every directed graph D is spanned by :(D) disjoint directed paths, where :(D) is the size of a largest stable set of D. When :(D)>1 and D is strongly connected, it has been conjectured by Las Vergnas that D is spanned by an arborescence with :(D)&1 leaves. The