A cusped hyperbolic 4-manifold without spin structures
Geometric Topology
2026-04-28 v2
Abstract
We build a non-compact, orientable, hyperbolic four-manifold of finite volume that does not admit any spin structure.
Cite
@article{arxiv.2510.12657,
title = {A cusped hyperbolic 4-manifold without spin structures},
author = {Stefano Riolo and Edoardo Rizzi},
journal= {arXiv preprint arXiv:2510.12657},
year = {2026}
}
Comments
10 pages, 10 figures, 1 table. Final version (negligible changes wrt v1), to appear in AGT