English

On the Euler class one conjecture for fillable contact structures

Geometric Topology 2025-04-24 v2

Abstract

In this paper, it is proved that every oriented closed hyperbolic 33--manifold NN admits some finite cover MM with the following property. There exists some even lattice point ww on the boundary of the dual Thurston norm unit ball of MM, such that ww is not the real Euler class of any weakly symplectically fillable contact structure on MM. In particular, ww is not the real Euler class of any transversely oriented, taut foliation on MM. This supplies new counter-examples to Thurston's Euler class one conjecture.

Keywords

Cite

@article{arxiv.2409.14504,
  title  = {On the Euler class one conjecture for fillable contact structures},
  author = {Yi Liu},
  journal= {arXiv preprint arXiv:2409.14504},
  year   = {2025}
}

Comments

20 pages; minor revision of exposition

R2 v1 2026-06-28T18:52:58.174Z