Triple linking numbers and surface systems

Davis, Christopher William; Nagel, Matthias; Orson, Patrick; Powell, Mark

Abstract

We give a refined value group for the collection of triple linking numbers of links in the 3–sphere. Given two links with the same pairwise linking numbers we show that they have the same refined triple linking number collection if and only if the links admit homeomorphic surface systems. Moreover these two conditions hold if and only if the link exteriors are bordant over BZ n, and if and only if the third lower central series quotients π/π3 of the link groups are isomorphic preserving meridians and longitudes. We also show that these conditions imply that the link groups have isomorphic fourth lower central series quotients π/π4, preserving meridians.

Citation

Davis, C. W., Nagel, M., Orson, P., & Powell, M. (2020). Triple linking numbers and surface systems. Indiana University Mathematics Journal, 69(7), 2505-2547. https://doi.org/10.1512/iumj.2020.69.8081

• Journal Article Type: Article
• Acceptance Date: May 28, 2019
• Online Publication Date: Mar 4, 2020
• Publication Date: Jan 1, 2020
• Deposit Date: May 28, 2019
• Journal: Indiana University Mathematics Journal
• Print ISSN: 0022-2518
• Electronic ISSN: 1943-5258
• Publisher: Indiana University Mathematics Journal
• Peer Reviewed: Peer Reviewed
• Volume: 69
• Issue: 7
• Pages: 2505-2547
• DOI: https://doi.org/10.1512/iumj.2020.69.8081
• Public URL: https://durham-repository.worktribe.com/output/1300946
• Publisher URL: https://www.iumj.indiana.edu/IUMJ/Preprints/8081.pdf
• Related Public URLs: https://arxiv.org/abs/1709.08478