Real bordered Floer homology
Geometric Topology
2026-04-23 v1 Symplectic Geometry
Abstract
Fix a 3-manifold with boundary and an orientation-preserving involution exchanging the boundary components, with nonempty fixed set. To an appropriate kind of Heegaard diagram for , we describe how to associate a module over the bordered Heegaard Floer algebra of . These modules satisfy a gluing, or pairing, theorem, and extend the "hat" variant of Guth-Manolescu's real Heegaard Floer homology, . Using these modules, we give a practical algorithm to compute for real 3-manifolds with connected fixed set.
Cite
@article{arxiv.2604.20565,
title = {Real bordered Floer homology},
author = {Robert Lipshitz and Peter Ozsváth},
journal= {arXiv preprint arXiv:2604.20565},
year = {2026}
}
Comments
75 pages, 33 figures