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Systoles of hyperbolic hybrids

Sami Douba

Vol. 7 (2025), No. 1, 193–198
Abstract

We exhibit closed hyperbolic manifolds with arbitrarily small systole in each dimension that are not quasiarithmetic in the sense of Vinberg, and are thus not commensurable to those constructed by Agol, Belolipetsky–Thomson, and Bergeron–Haglund–Wise. This is done by taking hybrids of the manifolds constructed by the latter authors.

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Keywords
geometry, topology, hyperbolic manifolds, systolic geometry, discrete subgroups of Lie groups
Mathematical Subject Classification
Primary: 22E40, 57N16
Milestones
Received: 14 November 2023
Accepted: 23 August 2024
Published: 7 March 2025
Authors
Sami Douba
Institut des Hautes Études Scientifiques
Bures-sur-Yvette
France