Geodesic
Archimedean toroidal maps and their minimal almost regular covers
Ars Mathematica Contemporanea, Tome 17 (2019) no. 2, pp. 493-514.

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The automorphism group of a map acts naturally on its flags (triples of incident vertices, edges, and faces). An Archimedean map on the torus is called almost regular if it has as few flag orbits as possible for its type; for example, a map of type (4.82) is called almost regular if it has exactly three flag orbits. Given a map of a certain type, we will consider other more symmetric maps that cover it. In this paper, we prove that each Archimedean toroidal map has a unique minimal almost regular cover. By using the Gaussian and Eisenstein integers, along with previous results regarding equivelar maps on the torus, we construct these minimal almost regular covers explicitly.
DOI : 10.26493/1855-3974.1825.64c
Keywords: Maps, polytopes, groups, covers, Gaussian and Eisenstein integers 
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Kostiantyn Drach; Yurii Haidamaka; Mark Mixer; Maksym Skoryk. Archimedean toroidal maps and their minimal almost regular covers. Ars Mathematica Contemporanea, Tome 17 (2019) no. 2, pp. 493-514. doi : 10.26493/1855-3974.1825.64c. http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.1825.64c/

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