English

Hyperbolic manifolds without $\text{spin}^\mathbb{C}$ structures and non-vanishing higher order Stiefel-Whitney classes

Geometric Topology 2023-05-08 v2

Abstract

We show that in every commensurability class of cusped arithmetic hyperbolic manifolds of simplest type of dimension 2n+262n+2\geq 6 there are manifolds MM such that the Stiefel-Whitney classes w2j(M)w_{2j}(M) are non-vanishing for all 02jn0 \leq 2j \leq n. We also show that for the same commensurability classes there are manifolds (different from the previous ones) that do not admit a spinC\text{spin}^\mathbb{C} structure.

Keywords

Cite

@article{arxiv.2302.08060,
  title  = {Hyperbolic manifolds without $\text{spin}^\mathbb{C}$ structures and non-vanishing higher order Stiefel-Whitney classes},
  author = {Alan W. Reid and Connor Sell},
  journal= {arXiv preprint arXiv:2302.08060},
  year   = {2023}
}

Comments

13 pages. Added a new main result regarding manifolds without spin-c structures, and the corresponding secondary results. The authors thank Bruno Martelli for pointing out this application

R2 v1 2026-06-28T08:41:25.953Z