English

Non-Hamiltonian actions with fewer isolated fixed points

Symplectic Geometry 2023-07-14 v1

Abstract

In an earlier paper, the second author resolved a question of McDuff by constructing a non-Hamiltonian symplectic circle action on a closed, connected six-dimensional symplectic manifold with exactly 32 fixed points. In this paper, we improve on this example by reducing the number of fixed points. More concretely, we construct a non-Hamiltonian symplectic circle action on a closed, connected six-dimensional symplectic manifold with exactly 2k2k fixed points for any k5k \geq 5.

Keywords

Cite

@article{arxiv.2007.12592,
  title  = {Non-Hamiltonian actions with fewer isolated fixed points},
  author = {Donghoon Jang and Susan Tolman},
  journal= {arXiv preprint arXiv:2007.12592},
  year   = {2023}
}
R2 v1 2026-06-23T17:22:54.539Z