English

A structure theorem for fibrations on Delsarte surfaces

Algebraic Geometry 2024-10-22 v1

Abstract

In this paper we study a special class of fibrations on Delsarte surfaces. We call these fibrations Delsarte fibrations. We show that after a specific cyclic base change the fibration is the pull back of a fibration with three singular fibers, and that this second base change is completely ramified at two points where the fiber is singular. As a corollary we show that every Delsarte fibration of genus 1 with nonconstant jj-invariant occurs as the base change of an elliptic surface from Fastenberg's list of rational elliptic surfaces with γ<1\gamma<1.

Keywords

Cite

@article{arxiv.1204.4103,
  title  = {A structure theorem for fibrations on Delsarte surfaces},
  author = {Bas Heijne and Remke Kloosterman},
  journal= {arXiv preprint arXiv:1204.4103},
  year   = {2024}
}
R2 v1 2026-06-21T20:51:28.615Z