论文标题

改进的新交叉点定理被重新审视

The Improved New Intersection Theorem revisited

论文作者

Christensen, Lars Winther, Ferraro, Luigi

论文摘要

我们证明了Evans和Griffith的一般版本,并改善了新的交叉点理论:如果我成为本地环R的理想。这改善了我在2018年获得的Avramov,Iyengar和Neeman获得的HT。

We prove a generalized version of Evans and Griffith's Improved New Intersection Theorem: Let I be an ideal in a local ring R. If a finite free R-complex, concentrated in nonnegative degrees, has I-torsion homology in positive degrees, and the homology in degree 0 has an I-torsion minimal generator, then the length of the complex is at least dim R - dim R/I. This improves the bound ht I obtained by Avramov, Iyengar, and Neeman in 2018.

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