Elliptic-elliptic surfaces and the Hesse pencil
Algebraic Geometry
2024-09-30 v1
Abstract
We construct a family of elliptic surfaces with that arise from base change of the Hesse pencil. We identify explicitly a component of the higher Noether-Lefschetz locus with positive Mordell-Weil rank, and a particular surface having maximal Picard number and defined over . These examples satisfy the infinitesimal Torelli theorem, providing a second proof of the dominance of period map, which was first obtained by Engel-Greer-Ward. A third proof is provided using the Shioda modular surface associated with . Finally, we find birational models for the degenerations at the boundary of the one-dimensional Noether-Lefschetz locus, and extend the period map at those limit points.
Cite
@article{arxiv.2409.18927,
title = {Elliptic-elliptic surfaces and the Hesse pencil},
author = {François Greer and Yilong Zhang},
journal= {arXiv preprint arXiv:2409.18927},
year = {2024}
}
Comments
36 pages, 8 figures. Comments are welcome!