Regular dessins d'enfants with dicyclic group of automorphisms
Algebraic Geometry
2018-09-17 v1
Abstract
Let be the dicyclic group of order . We observe that, up to isomorphisms, (i) for even there is exactly one regular dessin d'enfant with automorphism group , and (ii) for odd there are exactly two of them. All of them are produced on very well known hyperelliptic Riemann surfaces. We observe, for each of these cases, that the isotypical decomposition, induced by the action of , of its jacobian variety has only one component. If is even, then the action is purely-non-free, that is, every element acts with fixed points. In the case odd, the action is not purely-non-free in one of the actions and purely non-free for the other.
Keywords
Cite
@article{arxiv.1809.05429,
title = {Regular dessins d'enfants with dicyclic group of automorphisms},
author = {Rubén A. Hidalgo and Saúl Quispe},
journal= {arXiv preprint arXiv:1809.05429},
year = {2018}
}