关于正特征伪有效除子的数值维数
代数几何
2013-06-13 v3
摘要
设是正特征代数闭域上的光滑射影簇。我们证明,如果是上的伪有效-除子,且数值上不等于其除子Zariski分解中的负部分,则的数值维数为正。在特征零时,Nakayama利用消失定理证明了这一点。
引用
@article{arxiv.1206.6521,
title = {On the numerical dimension of pseudo-effective divisors in positive characteristic},
author = {Paolo Cascini and Christopher Hacon and Mircea Mustata and Karl Schwede},
journal= {arXiv preprint arXiv:1206.6521},
year = {2013}
}
备注
v.3 (17 pages): typos corrected and other minor changes. Additional remarks on the singular case. To appear in the American Journal of Mathematics