English

$(\mathbb{RP}^{2n-1},\xi_{std})$ is not exactly fillable for $n\ne 2^k$

Symplectic Geometry 2021-12-11 v2

Abstract

We prove that (RP2n1,ξstd)(\mathbb{RP}^{2n-1},\xi_{std}) is not exactly fillable for any n2kn\ne 2^k and there exist strongly fillable but not exactly fillable contact manifolds for all dimension 5\ge 5.

Cite

@article{arxiv.2001.09718,
  title  = {$(\mathbb{RP}^{2n-1},\xi_{std})$ is not exactly fillable for $n\ne 2^k$},
  author = {Zhengyi Zhou},
  journal= {arXiv preprint arXiv:2001.09718},
  year   = {2021}
}

Comments

Revised version with more self-contained expository and more detailed proofs, comments welcome!

R2 v1 2026-06-23T13:21:30.401Z