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Archimedean toroidal maps and their edge covers

  • Arnab Kundu and Dipendu Maity EMAIL logo
Published/Copyright: January 2, 2024

Abstract

The automorphism group of a map on a surface acts naturally on its flags (triples of incident vertices, edges, and faces). We will study the action of the automorphism group of a map on its edges. A map is semi-equivelar if all of its vertices have the same type of face-cycles. A semi-equivelar toroidal map refers to a semi-equivelar map embedded on a torus. If a map has k edge orbits under its automorphism group, it is referred to as a k-edge orbital or k-orbital. Specifically, it is referred to as an edge-transitive map if k = 1 . If any two edges have the same edge-symbol, a map is said to be edge-homogeneous. Every edge-homogeneous toroidal map has an edge-transitive cover, as proved in [A. Orbanić, D. Pellicer, T. Pisanski and T. W. Tucker, Edge-transitive maps of low genus, Ars Math. Contemp. 4 2011, 2, 385–402]. In this article, we show the existence and give a classification of k-edge covers of semi-equivelar toroidal maps.


Communicated by Manfred Droste


Funding statement: This work is supported by the National Board for Higher Mathematics (under the Department of Atomic Energy, Government of India) Research Project Fund (No. 02011/9/2021-NBHM(R.P.)/R&D-II/9101). The fund aims to foster the development of higher mathematics in the country, formulate policies for mathematics development, assist in establishing and developing mathematical centers, and provide financial support for research projects, doctoral candidates, and postdoctoral scholars.

Acknowledgements

The authors are thankful to the referee for numerous useful comments and substantial improvement of the presentation of the article.

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Received: 2022-01-24
Revised: 2023-11-19
Published Online: 2024-01-02
Published in Print: 2024-03-01

© 2024 Walter de Gruyter GmbH, Berlin/Boston

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