The acyclic directed bunkbed conjecture is false
arXiv:2506.22284 · doi:10.1016/j.ejc.2025.104289
Abstract
We construct a simple acyclic directed graph for which the Bunkbed Conjecture is false, thereby resolving conjectures posed by Leander and by Hollom.
7 pages; accepted for publication in European Journal of Combinatorics