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Main Author: Chang, Chi-Kang
Format: Preprint
Published: 2023
Subjects:
Online Access:https://arxiv.org/abs/2312.04015
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author Chang, Chi-Kang
author_facet Chang, Chi-Kang
contents In this article, we will prove the Generalized Nonvanishing Conjecture holds for threefolds with either $κ>0$ or $q>0$. As a result, we can prove the Iitaka conjecture $C_{n,m}$ holds for $n=7$ if the source space has non-negative Kodaira dimension, if the general fibre has positive Kodaira dimension, or if the base space is not threefold with $κ=q=0$. In particular, $C^-_{n,m}$ holds if $n\leq 7$.
format Preprint
id arxiv_https___arxiv_org_abs_2312_04015
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Generalized Nonvanishing Conjecture and Iitaka Conjecture
Chang, Chi-Kang
Algebraic Geometry
In this article, we will prove the Generalized Nonvanishing Conjecture holds for threefolds with either $κ>0$ or $q>0$. As a result, we can prove the Iitaka conjecture $C_{n,m}$ holds for $n=7$ if the source space has non-negative Kodaira dimension, if the general fibre has positive Kodaira dimension, or if the base space is not threefold with $κ=q=0$. In particular, $C^-_{n,m}$ holds if $n\leq 7$.
title Generalized Nonvanishing Conjecture and Iitaka Conjecture
topic Algebraic Geometry
url https://arxiv.org/abs/2312.04015