摘要翻译:
本文研究了对$(R,\delta)$的对数正则性中心的正特征模拟。我们称这些类似物为$F$-纯度中心。我们证明了类次附加结果的正特征类似,证明了新的更强的类次附加结果,并在某些情况下将这些新结果提升到特征零。利用我们称之为一致$F$-相容理想的$F$-纯度中心的推广,我们给出了测试理想的一个表征(它统一了以前的几个表征)。最后,在$\delta=0$的情况下,我们证明了一致$F$-相容理想与Smith和Lyubeznik定义的$E_R(k)$的$Mathcal{F}(E_R(k))$-子模的零化子重合。
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英文标题:
《Centers of F-purity》
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作者:
Karl Schwede
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最新提交年份:
2009
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分类信息:
一级分类:Mathematics 数学
二级分类:Commutative Algebra 交换代数
分类描述:Commutative rings, modules, ideals, homological algebra, computational aspects, invariant theory, connections to algebraic geometry and combinatorics
交换环,模,理想,同调代数,计算方面,不变理论,与代数几何和组合学的联系
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一级分类:Mathematics 数学
二级分类:Algebraic Geometry 代数几何
分类描述:Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology
代数簇,叠,束,格式,模空间,复几何,量子上同调
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英文摘要:
In this paper, we study a positive characteristic analogue of the centers of log canonicity of a pair $(R, \Delta)$. We call these analogues centers of $F$-purity. We prove positive characteristic analogues of subadjunction-like results, prove new stronger subadjunction-like results, and in some cases, lift these new results to characteristic zero. Using a generalization of centers of $F$-purity which we call uniformly $F$-compatible ideals, we give a characterization of the test ideal (which unifies several previous characterizations). Finally, in the case that $\Delta = 0$, we show that uniformly $F$-compatible ideals coincide with the annihilators of the $\mathcal{F}(E_R(k))$-submodules of $E_R(k)$ as defined by Smith and Lyubeznik.
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PDF链接:
https://arxiv.org/pdf/0807.1654