可嵌入可定向曲面的图的列表着色数相对于色数的差距
组合数学
2022-01-04 v2
摘要
我们证明了对于环面上的无环 -正则三角剖分,其列表着色数(choice number)与色数(chromatic number)之间的差距至多为 。我们还证明了可嵌入亏格为 的可定向曲面的图的最大差距为 阶,而且对于色数为 阶的图,最大差距为 阶。
引用
@article{arxiv.2102.06993,
title = {The choice number versus the chromatic number for graphs embeddable on orientable surfaces},
author = {Niranjan Balachandran and Brahadeesh Sankarnarayanan},
journal= {arXiv preprint arXiv:2102.06993},
year = {2022}
}
备注
17 pages, 6 figures; changed notation of the triangulations to T(r, s, t) from T(s, r, t), added a reference in the last section, corrected typos