English

Some link homologies in $ \mathbb{RP}^3 $

Geometric Topology 2026-03-12 v1

Abstract

We introduce extensions of Khovanov homology and the Lee and Bar-Natan spectral sequences for links in RP3 \mathbb{RP}^3 . These extensions are distinct to those previously defined by Asaeda-Przytycki-Sikora (and Gabrov\v{s}ek's generalization), Chen, and Manolescu-Willis. The new Lee and Bar-Natan theories each yield Rasmussen invariants (that are distinct to one another). The invariant extracted from the new Lee homology is distinct to that defined by Manolescu-Willis; it is unclear if the same is true for the new Bar-Natan homology and that defined by Chen.

Keywords

Cite

@article{arxiv.2603.10832,
  title  = {Some link homologies in $ \mathbb{RP}^3 $},
  author = {William Rushworth},
  journal= {arXiv preprint arXiv:2603.10832},
  year   = {2026}
}

Comments

23 pages, 3 figures. Comments welcome

R2 v1 2026-07-01T11:14:46.042Z