English

Generic ordinarity for semi-stable fibration

Algebraic Geometry 2008-05-27 v1 Number Theory

Abstract

In this paper, we proved that, for a semi-stable fibration of a proper smooth surface to a proper smooth curve over a field of positive characteristic, if the generic fiber is ordinary, then the semi-positivity theorem holds. As an application, we constrcuted a counterexample to Parshin's conjecture on the Miyaoka-Yau inequality.

Keywords

Cite

@article{arxiv.0805.3982,
  title  = {Generic ordinarity for semi-stable fibration},
  author = {Junmyeong Jang},
  journal= {arXiv preprint arXiv:0805.3982},
  year   = {2008}
}

Comments

12 pages

R2 v1 2026-06-21T10:44:15.182Z