English

Smooth quotients of abelian surfaces by finite groups that fix the origin

Algebraic Geometry 2022-06-13 v2

Abstract

Let AA be an abelian surface and let GG be a finite group of automorphisms of AA fixing the origin. Assume that the analytic representation of GG is irreducible. We give a classification of the pairs (A,G)(A,G) such that the quotient A/GA/G is smooth. In particular, we prove that A=E2A=E^2 with EE an elliptic curve and that A/GP2A/G\simeq\mathbb{P}^2 in all cases. Moreover, for fixed EE, there are only finitely many pairs (E2,G)(E^2,G) up to isomorphism. This fills a small gap in the literature and completes the classification of smooth quotients of abelian varieties by finite groups fixing the origin started by the first two authors.

Keywords

Cite

@article{arxiv.1809.05405,
  title  = {Smooth quotients of abelian surfaces by finite groups that fix the origin},
  author = {Robert Auffarth and Giancarlo Lucchini Arteche and Pablo Quezada},
  journal= {arXiv preprint arXiv:1809.05405},
  year   = {2022}
}

Comments

14 pages. arXiv admin note: text overlap with arXiv:1801.00028