Dihedralizing the Quaternions

In this paper, we will take the classic dihedral and quaternion groups and explore questions like "what if we replace i = e2πi/4 in Q8 with a larger root of unity?" and "what if we add a reflection to Q8?" The delightful answers reveal lesser-known families like the dicyclic, diq...

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Veröffentlicht in:The American mathematical monthly 2024-04, Vol.131 (4), p.294-308
1. Verfasser: Macauley, Matthew
Format: Artikel
Sprache:eng
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Zusammenfassung:In this paper, we will take the classic dihedral and quaternion groups and explore questions like "what if we replace i = e2πi/4 in Q8 with a larger root of unity?" and "what if we add a reflection to Q8?" The delightful answers reveal lesser-known families like the dicyclic, diquaternion, semidihedral, and semiabelian groups, which come to life with visuals such as Cayley graphs, cycle graphs, and subgroup lattices.
ISSN:0002-9890
1930-0972
DOI:10.1080/00029890.2023.2298656