中文

关于 Geramita-Harbourne-Migliore 猜想

交换代数 2020-01-01 v3 代数几何

摘要

Σ\SigmaK[x0,,xn]\mathbb K[x_0,\ldots,x_n] 中线性形式的有限集合,其中 K\mathbb K 是一个域。记 Supp(Σ){\rm Supp}(\Sigma)Σ\Sigma 中所有非成比例元素的集合,并设 Supp(Σ){\rm Supp}(\Sigma) 是一般的,即其任意 n+1n+1 个元素线性无关。令 1aΣ1\leq a\leq |\Sigma|。本文中我们证明如下猜想:Σ\Sigma 的线性形式的(所有)aa 重乘积生成的理想具有线性分次自由分解。作为推论,我们证明了关于星型构型定义理想的普通幂的准素分解的 Geramita-Harbourne-Migliore 猜想,并确定这些理想的复苏(resurgence)。

关键词

引用

@article{arxiv.1906.08346,
  title  = {On the Geramita-Harbourne-Migliore conjecture},
  author = {Stefan Tohaneanu and Yu Xie},
  journal= {arXiv preprint arXiv:1906.08346},
  year   = {2020}
}

备注

13 pages. We thank Kuei-Nuan Lin and Yi-Huang Shen for spotting a mistake in the first version of this article. In this second version we restrict to collections of linear forms with generic support. All the previous results concerning star configurations are correct since they assume the generic support hypothesis. The linear free resolution conjecture in its full generality is still open