arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.13188math.GT
收藏

关于正辫环的HOMFLY多项式的注记

A note on HOMFLY polynomial of positive braid links

Tetsuya Ito

摘要:

对于一个正辫子链,一个链表示为一个封闭的正辫子,我们确定的几何不变量,如,最大欧拉示性数,分裂因子的数量,素因子的数量方面的HOMFLY多项式的前几个系数。我们的结果改进了已知的Conway多项式和Jones多项式的正辫链的结果。在附录中,我们给出了Cromwell定理的一个简单证明:正辫图表示合成链当且仅当该图是合成的。

英文摘要:

For a positive braid link, a link represented as a closed positive braids, we determine the first few coefficients of its HOMFLY polynomial in terms of geometric invariants such as, the maximum euler characteristics, the number of split factors, and the number of prime factors. Our results give improvements of known results for Conway and Jones polynomial of positive braid links. In Appendix, we present a simpler proof of theorem of Cromwell, a positive braid diagram represent composite link if and only if the the diagram is composite.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑