| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4655774 | Journal of Combinatorial Theory, Series A | 2010 | 9 Pages |
Abstract
For a labelled tree on the vertex set [n]:={1,2,…,n}, define the direction of each edge ij to be i→j if i
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
