局部有限图中所有缠结的高效区分
组合数学
2024-03-25 v2
摘要
虽然有限图具有能高效区分其所有缠结的树分解,但具有粗端(thick ends)的局部有限图未必具有此类树分解。我们证明每个无粗端的局部有限图容许这样的树分解,事实上是一种典范的树分解。我们的证明在任何此类树分解存在性的障碍处展示出一个粗端,并建立在用于分析分离之严格递增序列极限行为的新方法之上。
引用
@article{arxiv.2303.09332,
title = {Efficiently distinguishing all tangles in locally finite graphs},
author = {Raphael W. Jacobs and Paul Knappe},
journal= {arXiv preprint arXiv:2303.09332},
year = {2024}
}
备注
19 pages, new revised version: fixed several small typos, included appendix into main body of the paper, added new proof of Lemma 3.10, added two figures and fixed proof of Lemma 4.5