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Antiprism code

Description

Spherical \((3,2q)\) code for \(q \geq 2\) whose codewords are the vertices of a \(q\)-antiprism.

Protection

The antiprism vertices consists of two \(q\)-gon vertices with the \(q\)-gons rotated by \(2\pi/q\) degrees. The relative height and radii of the \(q\)-gons can be modulated while still staying on the sphere. For the case when the two \(q\)-gons are such that the \(q=2,3\) cases reduce to the tetrahedron and octahedron, respectively, the antiprism is a spherical 3-design for \(q \geq 3\), and a \(2\)-design for \(q=2\) [1]. This can be seen as a consequence of [2; Lemma 6.11].

Notes

See the corresponding Bendwavy database entry [3].

Cousins

  • Spherical design— For the case when the two \(q\)-gons are such that the \(q=2,3\) cases reduce to the tetrahedron and octahedron, respectively, the antiprism is a spherical 3-design for \(q \geq 3\), and a \(2\)-design for \(q=2\) [1]. This can be seen as a consequence of [2; Lemma 6.11].
  • Biorthogonal spherical code— The antiprism reduces to the octahedron for \(q=3\).
  • Simplex spherical code— The antiprism reduces to the tetrahedron for \(q=2\).

Member of code lists

References

[1]
V. V. Albert, private communication, 2025
[2]
S. Borodachov, “Odd strength spherical designs attaining the Fazekas–Levenshtein bound for covering and universal minima of potentials”, Aequationes mathematicae 98, 509 (2024) DOI
[3]
R. Klitzing, “N-ap”, Polytopes & their Incidence Matrices URL
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Zoo Code ID: antiprism

Cite as:
“Antiprism code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2026. https://errorcorrectionzoo.org/c/antiprism, arXiv:2606.11484
BibTeX:
@incollection{eczoo_antiprism,
title={Antiprism code},
booktitle={The Error Correction Zoo},
year={2026},
editor={Albert, Victor V. and Faist, Philippe},
eprint={2606.11484},
doi={10.48550/arXiv.2606.11484},
url={https://errorcorrectionzoo.org/c/antiprism}
}
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Permanent link:
https://errorcorrectionzoo.org/c/antiprism

Cite as:

“Antiprism code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2026. https://errorcorrectionzoo.org/c/antiprism, arXiv:2606.11484

Github: https://github.com/errorcorrectionzoo/eczoo_data/edit/main/codes/classical/spherical/polytope/3d/antiprism/antiprism.yml.