A small cusped hyperbolic 4-manifold

Published 7 May 2023 in math.GT | (2305.04285v3)

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.

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Stefano Riolo

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