除数体积函数在除数家族中的上半连续性
代数几何
2025-08-08 v2
摘要
我们研究了除数体积在家族中的行为。我们证明了在任意稠密基集的纤维上的除数体积的下确界等于其在一般纤维上的体积。作为应用,我们证明了在平坦家族中,若纤维为简约且不可约,则除数体积函数是上半连续的。
引用
@article{arxiv.2504.16676,
title = {The volume function is upper semicontinuous on families of divisors},
author = {Junpeng Jiao},
journal= {arXiv preprint arXiv:2504.16676},
year = {2025}
}
备注
Sections 4 and 5 have been removed, as the questions they addressed have now been fully resolved via a different method in my new preprint