关于线图临界群的注记
组合数学
2010-11-24 v2
摘要
本注记回答了Levine在arXiv:math.CO/0906.2809中提出的问题。主要结果是定理1,它表明在某些情况下,有向图的临界群是其有向线图临界群的商群。
引用
@article{arxiv.1008.2557,
title = {A Note on the Critical Group of a Line Graph},
author = {David Perkinson and Nicholas Salter and Tianyuan Xu},
journal= {arXiv preprint arXiv:1008.2557},
year = {2010}
}
备注
6 pages. Added details to the proof of Theorem 1. Fixed typos