中文

雅可比代数与雅可比模的莱夫谢茨性质

代数几何 2023-10-20 v3

摘要

V:f=0V:f=0为复射影空间Pn\mathbb{P}^nn3n \geq 3)中次数d3d \geq 3且具有仅孤立奇点的超曲面。设M(f)M(f)为相应的雅可比代数,H:=0H: \ell=0Pn\mathbb{P}^n中避开VV的奇点但使得VHV \cap H为奇异的超平面。我们将由线性形式\ell的乘法所诱导的线性映射:M(f)kM(f)k+1\ell: M(f)_k \to M(f)_{k+1}的莱夫谢茨型性质与超平面截面VHV \cap H的奇点联系起来。对雅可比模N(f)N(f)也得到了类似的结果。

关键词

引用

@article{arxiv.2202.02233,
  title  = {Lefschetz properties of Jacobian algebras and Jacobian modules},
  author = {Alexandru Dimca and Giovanna Ilardi},
  journal= {arXiv preprint arXiv:2202.02233},
  year   = {2023}
}

备注

This new version, where some details are added and some references are updated, is accepted for publication in Annali della Scuola Normale Superiore di Pisa