The structure of delta-matroids with width one twists
Combinatorics
2017-05-26 v1
Abstract
The width of a delta-matroid is the difference in size between a maximal and minimal feasible set. We give a Rough Structure Theorem for delta-matroids that admit a twist of width one. We apply this theorem to give an excluded minor characterisation of delta-matroids that admit a twist of width at most one.
Keywords
Cite
@article{arxiv.1705.09129,
title = {The structure of delta-matroids with width one twists},
author = {Carolyn Chun and Rhiannon Hall and Criel Merino and Iain Moffatt and Steven Noble},
journal= {arXiv preprint arXiv:1705.09129},
year = {2017}
}