Corpus ID: 237571375

# Partially ordering weighted trees using discrete Green's functions

@inproceedings{Zeng2021PartiallyOW,
title={Partially ordering weighted trees using discrete Green's functions},
author={Ji Zeng},
year={2021}
}
• Ji Zeng
• Published 19 September 2021
• Mathematics
In this paper, we consider the edge transfer operation for which we remove an edge incident to a vertex and connect one of its neighbors to the other endpoint of this removed edge. We show that if an edge of a weighted tree is transferred from a vertex to another vertex with smaller diagonal value on the combinatorial Green’s function, the resulting tree has smaller Kemeny’s constant. Consequently, this leads to a partial order on the family of trees. Maximal and minimal elements of this… Expand

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