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arXiv 0906.4313math.ACmath.AG
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非Q-Gorenstein环中的检验理想

Test ideals in non-Q-Gorenstein rings

Karl Schwede

摘要:

设$X = \Spec R$是特征$p > 0$的$F$ -有限正规簇.本文证明了大检验理想$τ_b(R) = \tld τ(R)$等于$\sum_Δ τ(R; Δ)$,其中和是$Δ$上的,使得$K_X + Δ$是$\bQ$ -Cartier.这肯定地回答了许多人提出的一个问题,包括Blickle,Lazarsfeld,K。Lee和K.史密斯此外,在$R$甚至不一定正规的情况下,我们有这个结果的一个版本。

英文摘要:

Suppose that $X = \Spec R$ is an $F$-finite normal variety in characteristic $p > 0$. In this paper we show that the big test ideal $τ_b(R) = \tld τ(R)$ is equal to $\sum_Δ τ(R; Δ)$ where the sum is over $Δ$ such that $K_X + Δ$ is $\bQ$-Cartier. This affirmatively answers a question asked by various people, including Blickle, Lazarsfeld, K. Lee and K. Smith. Furthermore, we have a version of this result in the case that $R$ is not even necessarily normal.

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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