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arXiv 1606.01809math.AC
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合点丛与几乎完全交的弱Lefschetz性质

Syzygy bundles and the weak Lefschetz property of almost complete intersections

David Cook, Uwe Nagel

摘要:

确定弱Lefschetz性质的存在性通常是一个具有挑战性的问题。在这项工作中,进行了深入的研究的情况下,阿丁单项理想的四个生成元在三个变量。我们使用菱形平铺连接来描述这样一个理想的syzygy丛的半稳定性,以确定其通用的分裂类型,并决定弱Lefschetz属性的存在。我们提供的结果在特性零和积极的特点。

英文摘要:

Deciding the presence of the weak Lefschetz property often is a challenging problem. In this work an in-depth study is carried out in the case of Artinian monomial ideals with four generators in three variables. We use a connection to lozenge tilings to describe semistability of the syzygy bundle of such an ideal, to determine its generic splitting type, and to decide the presence of the weak Lefschetz property. We provide results in both characteristic zero and positive characteristic.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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