Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4657107 | Journal of Combinatorial Theory, Series B | 2010 | 10 Pages |
Abstract
Let T be a tree all of whose internal vertices have degree at least three. In 1983 Jamison conjectured in JCT B that the average order of a subtree of T is at least half the order of T. In this paper a proof is provided. In addition, it is proved that the average order of a subtree of T is at most three quarters the order of T. Several open questions are stated.
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics