English

Annular link invariants from the Sarkar-Seed-Szab\'o spectral sequence

Geometric Topology 2019-09-12 v1

Abstract

For a link in a thickened annulus A×IA \times I, we define a ZZZ\mathbb{Z} \oplus \mathbb{Z} \oplus \mathbb{Z} filtration on Sarkar-Seed-Szab\'o's perturbation of the geometric spectral sequence. The filtered chain homotopy type is an invariant of the isotopy class of the annular link. From this, we define a two-dimensional family of annular link invariants and study their behavior under cobordisms. In the case of annular links obtained from braid closures, we obtain a necessary condition for braid quasipositivity and a sufficient condition for right-veeringness, as well as Bennequin-type inequalities.

Keywords

Cite

@article{arxiv.1909.05191,
  title  = {Annular link invariants from the Sarkar-Seed-Szab\'o spectral sequence},
  author = {Linh Truong and Melissa Zhang},
  journal= {arXiv preprint arXiv:1909.05191},
  year   = {2019}
}

Comments

33 pages, 9 figures. arXiv admin note: text overlap with arXiv:1612.05953 by other authors