正链环的刻画与链环的$s$-不变量
几何拓扑
2017-10-27 v6
摘要
我们通过强拟正性、同质性以及Rasmussen、Beliakova和Wehrli的-不变量来刻画正链环。我们还研究了几乎正链环，特别是确定了几乎正链环的-不变量。这一结果表明，所有几乎正链环可能都是强拟正的。另一方面，它意味着几乎正链环绝不是同质链环。
引用
@article{arxiv.1405.4061,
title = {Characterization of positive links and the $s$-invariant for links},
author = {Tetsuya Abe and Keiji Tagami},
journal= {arXiv preprint arXiv:1405.4061},
year = {2017}
}
备注
18 pages, 10 figures, v5:the statements of Corollary 1.7 and Corollary 7.4 were corrected, Question 10.5 and two references were added, v6:this is the published version, survey parts are deleted