English

An explicit quasiplatonic curve with non-abelian moduli field

Algebraic Geometry 2016-04-25 v3

Abstract

We give an example of a regular dessin d'enfant whose field of moduli is not an abelian extension of the rational numbers, namely it is the field generated by a cubic root of 2. This answers a previous question. We also prove that the underlying curve has non-abelian field of moduli itself, giving an explicit example of a quasiplatonic curve with non-abelian field of moduli. In the last section, we note that two examples in previous literature can be used to find other examples of regular dessins d'enfants with non-abelian field of moduli.

Keywords

Cite

@article{arxiv.1509.05819,
  title  = {An explicit quasiplatonic curve with non-abelian moduli field},
  author = {Moisés Herradón Cueto},
  journal= {arXiv preprint arXiv:1509.05819},
  year   = {2016}
}

Comments

13 pages, 1 figure