English

Logarithmic multicanonical systems of smooth affine surfaces of logarithmic Kodaira dimension one

Algebraic Geometry 2024-04-16 v1

Abstract

Let SS be a smooth affine surface of logarithmic Kodaira dimension one and let (V,D)(V,D) be a pair of a smooth projective surface VV and a simple normal crossing divisor DD on VV such that VSuppD=SV \setminus \operatorname{Supp} D = S. In this paper, we consider the logarithmic multicanonical system m(KV+D)|m(K_V + D)|. We prove that, for any m8m \geq 8, m(KV+D)|m(K_V+D)| gives an P1\mathbb{P}^1-fibration form VV onto a smooth projective curve.

Keywords

Cite

@article{arxiv.2404.09208,
  title  = {Logarithmic multicanonical systems of smooth affine surfaces of logarithmic Kodaira dimension one},
  author = {Hideo Kojima},
  journal= {arXiv preprint arXiv:2404.09208},
  year   = {2024}
}

Comments

16 pages, 1 figure