Reconstruction of caterpillar tanglegrams
Combinatorics
2025-08-18 v2
Abstract
A tanglegram consists of two rooted binary trees with the same number of leaves and a perfect matching between the leaves of the trees. Given a size- tanglegram, i.e., a tanglegram for two trees with leaves, a multiset of induced size- tanglegrams is obtained by deleting a pair of matched leaves in every possible way. Here, we analyze whether a size- tanglegram is uniquely encoded by this multiset of size- tanglegrams. We answer this question affirmatively in the case that at least one of the two trees of the tanglegram is a caterpillar tree.
Cite
@article{arxiv.2501.13670,
title = {Reconstruction of caterpillar tanglegrams},
author = {Ann Clifton and Eva Czabarka and Kevin Liu and Sarah Loeb and Utku Okur and Laszlo Szekely and Kristina Wicke},
journal= {arXiv preprint arXiv:2501.13670},
year = {2025}
}
Comments
23 pages, 8 figures