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arXiv 2407.07979math.AG
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$p$-进温顺泰特扭转

$p$-adic tame Tate twists

Morten Lüders

AI总结:

本研究在温顺拓扑中定义$p$-进温顺泰特扭转,构建类似Beilinson-Lichtenbaum猜想的框架,证明正特征曲线上温顺对数deRham-Witt层的Gersten猜想,指出任意维数情形可由严格$\n\nmathbb{A}^1$-不变性推出。

摘要:

近期,Hübner-Schmidt定义了概形的温顺位点。我们在温顺拓扑中定义了$p$-进温顺泰特扭转,并证明了若干初步性质。我们针对$p$-进温顺泰特扭转与温顺对数deRham-Witt层,在温顺拓扑中构建了一个类似Beilinson-Lichtenbaum猜想的框架。二者与其平展对应物的区别仅在于权之上的上同调度。这些上同调群可借助Gersten猜想分析,该猜想至少在猜想层面上在温顺拓扑中具有良好形式。我们证明了正特征曲线上温顺对数deRham-Witt层的Gersten猜想,并指出任意维数下的该猜想可由严格$\n\nmathbb{A}^1$-不变性推导得出。

英文摘要:

Recently, Hübner-Schmidt defined the tame site of a scheme. We define $p$-adic tame Tate twists in the tame topology and prove some first properties. We establish a framework analogous to the Beilinson-Lichtenbaum conjectures in the tame topology for $p$-adic tame Tate twists and tame logarithmic deRham-Witt sheaves. Both only differ from their étale counterpart in cohomological degrees above the weight. These cohomology groups can be analysed using the Gersten conjecture which, at least conjecturally, has a nice shape in the tame topology. We prove the Gersten conjecture for tame logarithmic deRham-Witt sheaves for curves in positive characteristic and note that the conjecture in arbitrary dimension would follow from strict $\mathbb{A}^1$-invariance.

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