发表机构
Academy of Mathematics and Systems Science, Chinese Academy of Sciences; State Key Laboratory of Mathematical Sciences, Academy of Mathematics and Systems Science, Chinese Academy of Sciences; School of Mathematical Sciences, University of Chinese Academy of Sciences(中国科学院数学与系统科学研究院; 中国科学院数学与系统科学研究院数学科学重点实验室; 中国科学院大学数学科学学院)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文用第一射流的有限维凸条件刻画向量丛的Griffiths正性,并给出对偶障碍及满足第一级条件但具有微分核的显式例子。
AI 中文摘要
我们通过正扭曲截面的第一射流上的有限维凸条件,刻画了光滑射影簇上向量丛的Griffiths正性。一个被伴随Levi算子消没的非零正矩阵值测度给出了对偶障碍。我们还给出了阿贝尔曲面上的一个显式向量丛,它满足第一级条件,但其完全未扭曲求值具有微分核。
英文摘要
We characterize Griffiths positivity of vector bundles on smooth projective varieties by a finite-dimensional convex condition on first jets of sections of positive twists. A nonzero positive matrix-valued measure annihilated by the adjoint Levi operator gives the dual obstruction. We also give an explicit bundle on an abelian surface that satisfies the first-level condition, but whose complete untwisted evaluation has a differential kernel.