Kavli Affiliate: Zhuo Li
| First 5 Authors: Zhuo Li, Tianlong Ma, Fengming Dong, Xian’an Jin,
| Summary:
For a k-tree T, a generalization of a tree, the local mean order of
sub-k-trees of T is the average order of sub-k-trees of T containing a given
k-clique. The problem whether the largest local mean order of a tree (i.e., a
1-tree) at a vertex always takes on at a leaf was asked by Jamison in 1984 and
was answered by Wagner and Wang in 2016. In 2018, Stephens and Oellermann asked
a similar problem: for any k-tree T, does the maximum local mean order of
sub-k-trees containing a given k-clique occur at a k-clique that is not a major
k-clique of T? In this paper, we give it an affirmative answer.
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