中文

环面结的特征斜率

几何拓扑 2014-10-01 v2

摘要

对于S3S^3中的给定纽结K0K_0,若对S3S^3中任意纽结KK进行pq\frac pq-手术所得流形与对K0K_0进行pq\frac pq-手术所得流形在保定向同胚下同胚,则必有K=K0K=K_0,此时称斜率pq\frac pqK0K_0的特征斜率。本文尝试寻找环面结Tr,sT_{r,s}的特征斜率。我们证明,任何大于30(r21)(s21)67\frac{30(r^2-1)(s^2-1)}{67}的斜率pq\frac pq都是Tr,sT_{r,s}的特征斜率。证明使用了Heegaard Floer同调与Agol–Lackenby六定理。对于T5,2T_{5,2},通过应用更多Heegaard Floer同调技巧,我们获得了其特征斜率集合的更具体信息。

关键词

引用

@article{arxiv.1206.5577,
  title  = {Characterizing slopes for torus knots},
  author = {Yi Ni and Xingru Zhang},
  journal= {arXiv preprint arXiv:1206.5577},
  year   = {2014}
}

备注

Version 2: 19 pages. This is a major revision. The title of the first version was "Towards a Dehn surgery characterization of $T_{5,2}$". We extended the result in the first version to general torus knots. We also fixed a gap in the first version, so our result for $T_{5,2}$ is slightly weaker than the originally claimed one