English

A small cusped hyperbolic 4-manifold

Geometric Topology 2024-01-30 v3

Abstract

By gluing some copies of a polytope of Kerckhoff and Storm's, we build the smallest known orientable hyperbolic 4-manifold that is not commensurable with the ideal 24-cell or the ideal rectified simplex. It is cusped and arithemtic, and has twice the minimal volume.

Keywords

Cite

@article{arxiv.2305.04285,
  title  = {A small cusped hyperbolic 4-manifold},
  author = {Stefano Riolo},
  journal= {arXiv preprint arXiv:2305.04285},
  year   = {2024}
}

Comments

9 pages, 5 figures. Final version, to appear in the Bulletin LMS

R2 v1 2026-06-28T10:28:02.652Z