The Löbell polyhedra form an infinite family of compact right-angled hyperbolic polyhedra in dimension 3. We observe, through both elementary and more conceptual means, that the “systoles” of the Löbell polyhedra approach 0, so that these polyhedra give rise to particularly straightforward examples of closed hyperbolic 3-manifolds with arbitrarily small systole, and constitute an infinite family even up to commensurability. By computing number-theoretic invariants of these polyhedra, we refine the latter result, and also determine precisely which of the Löbell polyhedra are quasi-arithmetic.
Bogachev, Nikolay  1 ; Douba, Sami  2
@article{10_2140_agt_2025_25_2281,
author = {Bogachev, Nikolay and Douba, Sami},
title = {Geometric and arithmetic properties of {L\"obell} polyhedra},
journal = {Algebraic and Geometric Topology},
pages = {2281--2295},
year = {2025},
volume = {25},
number = {4},
doi = {10.2140/agt.2025.25.2281},
url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2025.25.2281/}
}
TY - JOUR AU - Bogachev, Nikolay AU - Douba, Sami TI - Geometric and arithmetic properties of Löbell polyhedra JO - Algebraic and Geometric Topology PY - 2025 SP - 2281 EP - 2295 VL - 25 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.2140/agt.2025.25.2281/ DO - 10.2140/agt.2025.25.2281 ID - 10_2140_agt_2025_25_2281 ER -
%0 Journal Article %A Bogachev, Nikolay %A Douba, Sami %T Geometric and arithmetic properties of Löbell polyhedra %J Algebraic and Geometric Topology %D 2025 %P 2281-2295 %V 25 %N 4 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2025.25.2281/ %R 10.2140/agt.2025.25.2281 %F 10_2140_agt_2025_25_2281
Bogachev, Nikolay; Douba, Sami. Geometric and arithmetic properties of Löbell polyhedra. Algebraic and Geometric Topology, Tome 25 (2025) no. 4, pp. 2281-2295. doi: 10.2140/agt.2025.25.2281
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